338 Norma Mag Load Data
- Thread starter diderr
- Start date
88.0 gr H-1000
3.602 COAL
300gr Bergers Hybrid OTM's (BC is sick on these boolits)
Magnum primer of your choice
I'd like to hear other people's loads too.
I don't have a chrono, but with drop over distance data, I est. MV at 2625 with 88.0 gr H-1000 from my 27" tube
3.602 COAL
300gr Bergers Hybrid OTM's (BC is sick on these boolits)
Magnum primer of your choice
I'd like to hear other people's loads too.
I don't have a chrono, but with drop over distance data, I est. MV at 2625 with 88.0 gr H-1000 from my 27" tube
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Norma has a new reloading manual, bad par is they only list their powder. It list Norma 217 83.8gr mv-2575 and max at 88.1 gr mv-2707..... Norma MRP 75 gr mv 2315 and max at 80gr mv-2604..... Both loads with 300gr smk.
Hope Sierra or Berger will add it to their manual. Otherwise we got to rely on eachother. Others with data please chime in. I also have loaded 300 gr smk with RS Magnum with 89 gr and mv was just shy of 2700 fps.
338 Norma Mag
Norma Brass
300grn Berger OTM .060 off the lands
H1000 88.7grns - 2735fps
Federal 215M
26" Barrel. 1-9.5 Twist.
xdeano
Norma Brass
300grn Berger OTM .060 off the lands
H1000 88.7grns - 2735fps
Federal 215M
26" Barrel. 1-9.5 Twist.
xdeano
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xdeano -
How (i.e. what tool do you use) do you measure the distance of the boolit off the lands?
How (i.e. what tool do you use) do you measure the distance of the boolit off the lands?
Just getting my norma up and running I have h 1000 anyone trying retumbo and what trim to length r u guys using
Look up in the thread for h1000 load data. Pm me your email and ill send you starting point data.
Xdeano
Xdeano
I dont know about 3100, but i can tell you that i was up there with a 285grn hornady with slight pressure signs and backed off. This was with ramshot mag powder.
Xdeano
Xdeano
Shot a few of my load above.... getting a repeatable 0.33 MoA. Under 3/4" at 200 yards. Amazing.
Any Developments for loads?
I'm currently doing load Development with Norma MRP2. Yesterday i shot from 84,1-85,6 grains as my first ever rounds in the rifle.
My case capacity was somewhat higher than the numbers in QL. When I adjusted the numbers, they more or less matched the numbers i got of my chronograph, which was an average of 2643 doing 85,6 grains MRP2, 300gn Hybrids, Norma brass and CCI Magnum primers.
This is a far cry from the 2750's posted in some posts.
According to QL I should do 87,3 grains to hit 2700 fps, but pressure gets somewhat high, so I'm thinking of trying Norma 217 instead to get the same numbers with a bit lower pressure. I'm using Norma powders, because that's almost the only powders available here except VV, but it isn't available in N570
Any inputs on how to proceed and what kind of fps would you be satisfied with?
I can proceed with MRP2, but if it doesn't provide a decent velocity, I could use it for something else instead of just burning it in the 338 NM.
I'm currently doing load Development with Norma MRP2. Yesterday i shot from 84,1-85,6 grains as my first ever rounds in the rifle.
My case capacity was somewhat higher than the numbers in QL. When I adjusted the numbers, they more or less matched the numbers i got of my chronograph, which was an average of 2643 doing 85,6 grains MRP2, 300gn Hybrids, Norma brass and CCI Magnum primers.
This is a far cry from the 2750's posted in some posts.
According to QL I should do 87,3 grains to hit 2700 fps, but pressure gets somewhat high, so I'm thinking of trying Norma 217 instead to get the same numbers with a bit lower pressure. I'm using Norma powders, because that's almost the only powders available here except VV, but it isn't available in N570
Any inputs on how to proceed and what kind of fps would you be satisfied with?
I can proceed with MRP2, but if it doesn't provide a decent velocity, I could use it for something else instead of just burning it in the 338 NM.
Have you tried Retumbo?Any Developments for loads?
I'm currently doing load Development with Norma MRP2. Yesterday i shot from 84,1-85,6 grains as my first ever rounds in the rifle.
My case capacity was somewhat higher than the numbers in QL. When I adjusted the numbers, they more or less matched the numbers i got of my chronograph, which was an average of 2643 doing 85,6 grains MRP2, 300gn Hybrids, Norma brass and CCI Magnum primers.
This is a far cry from the 2750's posted in some posts.
According to QL I should do 87,3 grains to hit 2700 fps, but pressure gets somewhat high, so I'm thinking of trying Norma 217 instead to get the same numbers with a bit lower pressure. I'm using Norma powders, because that's almost the only powders available here except VV, but it isn't available in N570
Any inputs on how to proceed and what kind of fps would you be satisfied with?
I can proceed with MRP2, but if it doesn't provide a decent velocity, I could use it for something else instead of just burning it in the 338 NM.
89.0 gr of H1000 got me 2790 out of a 27" barrel.
89.0 gr of Retumbo only got me 2720 out of same bbl.
Groups were comparable.
89.0 gr of Retumbo only got me 2720 out of same bbl.
Groups were comparable.
That's pretty fast. MRP 2 isn't far from those two in burn rate. According to QL I get 4k bar to get to 2700 with Mrp2 in a 28 bbl and 2750 doesn't look possible.
Did your numbers fit with quick load.
I've never used QL, so I can't answer that. Sorry. I just kinda worked up from 87.0 gr and I'm happy at 89.0. No signs of pressure.
What's your case capacity?
Mine is 109,5gr and COL is 3.693 for the moment. If I plot in 89gr of Retumbo, it gives me:
Cartridge : .338 Norma Mag.
Bullet : .338, 300, Berger Hybrid OTM G7 #33106
Useable Case Capaci: 96.890 grain H2O = 6.291 cm³
Cartridge O.A.L. L6: 3.693 inch = 93.80 mm
Barrel Length : 28.0 inch = 711.2 mm
Powder : Hodgdon Retumbo
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2,0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20,0 79 71,20 2112 2972 26370 8740 97,6 2,108
-18,0 81 72,98 2165 3122 28100 8959 98,4 2,055
-16,0 83 74,76 2217 3275 29949 9157 99,0 2,003
-14,0 85 76,54 2269 3431 31921 9332 99,5 1,951
-12,0 87 78,32 2321 3589 34031 9483 99,8 1,902
-10,0 89 80,10 2372 3749 36290 9608 100,0 1,853
-08,0 91 81,88 2423 3911 38706 9713 100,0 1,800
-06,0 93 83,66 2473 4074 41292 9814 100,0 1,746
-04,0 95 85,44 2522 4238 44064 9912 100,0 1,695
-02,0 97 87,22 2571 4404 47036 10007 100,0 1,645
+00,0 99 89,00 2620 4571 50224 10099 100,0 1,597
+02,0 101 90,78 2668 4740 53647 10189 100,0 1,551
+04,0 103 92,56 2715 4911 57336 10275 100,0 1,506 ! Near Maximum !
+06,0 105 94,34 2762 5083 61301 10359 100,0 1,463 ! Near Maximum !
+08,0 107 96,12 2809 5258 65576 10438 100,0 1,422 !DANGEROUS LOAD-DO NOT USE!
+10,0 109 97,90 2856 5434 70189 10515 100,0 1,382 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 99 89,00 2720 4927 62639 9700 100,0 1,470 ! Near Maximum !
Data for burning rate decreased by 10% relative to nominal value:
-Ba 99 89,00 2463 4042 39896 10598 99,4 1,764
As I can't get any Retumbo etc, it's a bit academic.
217 does look better than MRP2. Anyone have any experience with it? Unfortunately searches yield very little in the way of real life data.
CB,
I know my numbers for the H1000 corresponds to my Quick Load data exactly. When I get time tomorrow i'll check some numbers for you. But i can tell you that from my numbers, Garandman isn't far off of what quick load is going to tell me because his velocities isn't much more then mine and i know he's running a slightly longer barrel. It'll be close.
xdeano
I know my numbers for the H1000 corresponds to my Quick Load data exactly. When I get time tomorrow i'll check some numbers for you. But i can tell you that from my numbers, Garandman isn't far off of what quick load is going to tell me because his velocities isn't much more then mine and i know he's running a slightly longer barrel. It'll be close.
xdeano
Great, thanks. 2750 looks impossible with MRP2 and even 2700 a stretch unless Quickload is way of.
Might be a better bet to save the MRP2 for 300 win mag and go NM 217.
Might be a better bet to save the MRP2 for 300 win mag and go NM 217.
with my rifle/cartridge specs with MRP2 you're going to have a hard time getting to 2700fps. Unless for some reason the burn rate is faster in the MRP2 then what the program has as a default, which in most cases it's going to be different anyhow. I don't have any MRP2 so i can't give you solid numbers. But given what I do have your node is going to be between 86.9 and 87.0grn MRP2 with a velocity of 2685fps roughly.
hope this helps. I'd use H1000. My tube is only 26" too.
xdeano
hope this helps. I'd use H1000. My tube is only 26" too.
xdeano
Thank you. It confirms that the MRP2 will be used for another cartridge.
It will have to be Norma 217 then, even though it isn't ideal either.
The only powders I can get are Norma, Vectan though not sp 13 and Vitahvuori though not N570.
Which ballistic software is that?
It will have to be Norma 217 then, even though it isn't ideal either.
The only powders I can get are Norma, Vectan though not sp 13 and Vitahvuori though not N570.
Which ballistic software is that?
Xdeano.
Im also using Quickload. The Window you posted, just looks a bit different from the one on screen
CB.
Im also using Quickload. The Window you posted, just looks a bit different from the one on screen
CB.
Mine might be an older version or something. I just did a print to document, and pulled it over into Photoshop to turn it into a jpg for easier visual. I wanted to give you all my specs if you were to have any questions and you can plug them in, to duplicate my results.
Xdeano
Xdeano
Thank you. I went and purchased some Norma 217. It should be better in my rifle and the MRP2 will be used in 300 win mag.
With Norma 217, the loads need to be compressed, to be able to get the proper velocity. I'm not too crazy about this, since I haven't done it before.
Looking at the data, would you have doubts about trying it?
Cartridge : .338 Norma Mag.
Bullet : .338, 300, Berger Hybrid OTM G7 #33106
Useable Case Capaci: 96.659 grain H2O = 6.276 cm³
Cartridge O.A.L. L6: 3.693 inch = 93.80 mm
Barrel Length : 28.0 inch = 711.2 mm
Powder : Norma 217
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2,0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20,0 85 74,48 2196 3212 28753 9304 98,0 2,055
-18,0 87 76,34 2252 3378 30837 9517 98,7 2,001
-16,0 89 78,20 2308 3548 33086 9705 99,3 1,948
-14,0 91 80,07 2363 3720 35515 9867 99,7 1,897
-12,0 93 81,93 2418 3894 38141 10003 99,9 1,840
-10,0 95 83,79 2472 4071 40983 10112 100,0 1,781
-08,0 98 85,65 2526 4249 44053 10208 100,0 1,723
-06,0 100 87,51 2579 4429 47332 10300 100,0 1,668
-04,0 102 89,38 2631 4611 50842 10390 100,0 1,616
-02,0 104 91,24 2683 4794 54612 10476 100,0 1,565 ! Near Maximum !
+00,0 106 93,10 2734 4979 58665 10558 100,0 1,516 ! Near Maximum !
+02,0 108 94,96 2785 5166 63026 10637 100,0 1,470 ! Near Maximum !
+04,0 110 96,82 2835 5356 67723 10711 100,0 1,425 !DANGEROUS LOAD-DO NOT USE!
+06,0 112 98,69 2886 5548 72787 10782 100,0 1,381 !DANGEROUS LOAD-DO NOT USE!
+08,0 115 100,55 2936 5742 78255 10848 100,0 1,340 !DANGEROUS LOAD-DO NOT USE!
+10,0 117 102,41 2986 5939 84169 10909 100,0 1,300 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 106 93,10 2836 5357 73620 10111 100,0 1,391 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 106 93,10 2574 4413 44556 11167 99,6 1,690
Looking at the data, would you have doubts about trying it?
Cartridge : .338 Norma Mag.
Bullet : .338, 300, Berger Hybrid OTM G7 #33106
Useable Case Capaci: 96.659 grain H2O = 6.276 cm³
Cartridge O.A.L. L6: 3.693 inch = 93.80 mm
Barrel Length : 28.0 inch = 711.2 mm
Powder : Norma 217
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2,0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20,0 85 74,48 2196 3212 28753 9304 98,0 2,055
-18,0 87 76,34 2252 3378 30837 9517 98,7 2,001
-16,0 89 78,20 2308 3548 33086 9705 99,3 1,948
-14,0 91 80,07 2363 3720 35515 9867 99,7 1,897
-12,0 93 81,93 2418 3894 38141 10003 99,9 1,840
-10,0 95 83,79 2472 4071 40983 10112 100,0 1,781
-08,0 98 85,65 2526 4249 44053 10208 100,0 1,723
-06,0 100 87,51 2579 4429 47332 10300 100,0 1,668
-04,0 102 89,38 2631 4611 50842 10390 100,0 1,616
-02,0 104 91,24 2683 4794 54612 10476 100,0 1,565 ! Near Maximum !
+00,0 106 93,10 2734 4979 58665 10558 100,0 1,516 ! Near Maximum !
+02,0 108 94,96 2785 5166 63026 10637 100,0 1,470 ! Near Maximum !
+04,0 110 96,82 2835 5356 67723 10711 100,0 1,425 !DANGEROUS LOAD-DO NOT USE!
+06,0 112 98,69 2886 5548 72787 10782 100,0 1,381 !DANGEROUS LOAD-DO NOT USE!
+08,0 115 100,55 2936 5742 78255 10848 100,0 1,340 !DANGEROUS LOAD-DO NOT USE!
+10,0 117 102,41 2986 5939 84169 10909 100,0 1,300 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 106 93,10 2836 5357 73620 10111 100,0 1,391 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 106 93,10 2574 4413 44556 11167 99,6 1,690
QuickLoad seems to me like a classic case of over thinking it.
In my admittedly limited experience, no computer program can tell you what will be optimal in a specific rifle. Ya gotta shoot.
It gives ya a lot of extraneous data.
I've developed four different rifles/ loads all by the old fashioned "seat of the pants" method - all to less than a half MoA. All pretty quickly, too. Maybe I been lucky.
I could see QL being valuable for wildcat loads, or some nearly extinct caliber. But not much else.
One man's opinion.....
In my admittedly limited experience, no computer program can tell you what will be optimal in a specific rifle. Ya gotta shoot.
It gives ya a lot of extraneous data.
I've developed four different rifles/ loads all by the old fashioned "seat of the pants" method - all to less than a half MoA. All pretty quickly, too. Maybe I been lucky.
I could see QL being valuable for wildcat loads, or some nearly extinct caliber. But not much else.
One man's opinion.....
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I would say just work up to your compressed load. I'm compressing 6% in my 6slr if I remember right.
Grarandman, quick load can be over thinking things, but I can take the program and figure it out before burning powder, get a baseline on what to start loading at that is close to a node. Load 5 rounds, shoot those over a chrony to get my velocity and that will figure my burn rate on the powder. Then I can plug that data in and rework the figures. Get my node and load it for 0.1 +- of the node and go shoot. Done.
Xdeano
Grarandman, quick load can be over thinking things, but I can take the program and figure it out before burning powder, get a baseline on what to start loading at that is close to a node. Load 5 rounds, shoot those over a chrony to get my velocity and that will figure my burn rate on the powder. Then I can plug that data in and rework the figures. Get my node and load it for 0.1 +- of the node and go shoot. Done.
Xdeano
Thank you both for your answers. I haven't tried compressing rounds before, so I was somewhat nervous hearing the powder crunching[emoji50] It helps to know that it doesn't need to be inherently problematic.
Garandman: I understand what you mean. Quickload gives alot of data and it can be a bit confusing until you figure out how it works. I developed my 308win without it and it took me alot longer to do. Granted I was new to reloading back then and didn't have any experience at all.
Quickload has enabled me to bypass alot of reloading after the initial first shots, so I agree with it being a great tool. Especially when one hasn't been reloading for alot of years and doesn't have the experience to just do it
[emoji4]
I'll try working up to the node, which should be at around 93, 1 grains.
Garandman: I understand what you mean. Quickload gives alot of data and it can be a bit confusing until you figure out how it works. I developed my 308win without it and it took me alot longer to do. Granted I was new to reloading back then and didn't have any experience at all.
Quickload has enabled me to bypass alot of reloading after the initial first shots, so I agree with it being a great tool. Especially when one hasn't been reloading for alot of years and doesn't have the experience to just do it
[emoji4]
I'll try working up to the node, which should be at around 93, 1 grains.
CB,
The first time your crush powder, it will give you a pucker factor, after that it's old hat. I've been reloading since i was old enough to see over the bench, granted I had a great teacher and supervision at that age. Working up a load is fun but very consuming of time and resources. With today's costs, i'd rather do it as easy as i can.
xdeano
The first time your crush powder, it will give you a pucker factor, after that it's old hat. I've been reloading since i was old enough to see over the bench, granted I had a great teacher and supervision at that age. Working up a load is fun but very consuming of time and resources. With today's costs, i'd rather do it as easy as i can.
xdeano
CB,
You'd said that you can get VV powder correct? You may want to run the numbers on VV n570 too.
looks like with ~95.0grns n570, at 5%compressed you'll be in the 2866fps with it. But it might be a hair to much, definitely load low and work up.
xdeano
You'd said that you can get VV powder correct? You may want to run the numbers on VV n570 too.
looks like with ~95.0grns n570, at 5%compressed you'll be in the 2866fps with it. But it might be a hair to much, definitely load low and work up.
xdeano
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I definitely didn't like that crunching sound, but it's reasuring, that I'm not the only one with that feeling.
I would love some N570, but that one is impossible to get here. It would have been one of my first choices if I could get my hands on it[emoji4] Everything else in VV is possible to get, but not 570.
Reloading in this country is a niche passtime at best and availability of components is bad, since we are a small country.
I'll shoot some MRP2 up to 88 grains and 217 up to 93 grains next thursday and post the results, ix they are any good.
I would love some N570, but that one is impossible to get here. It would have been one of my first choices if I could get my hands on it[emoji4] Everything else in VV is possible to get, but not 570.
Reloading in this country is a niche passtime at best and availability of components is bad, since we are a small country.
I'll shoot some MRP2 up to 88 grains and 217 up to 93 grains next thursday and post the results, ix they are any good.
A day at the range yielded the following.
Distance 100m.
First: 300gr Berger Hybrids, Norma brass, CCI Magnum primers and Norma MRP2 powder (86,0-88,0gr). CBTO 2.875.
86gr:
2615
2617
2617.
Really nice SD: 1, but low velocity.
86,5gr:
2670
2648
2649.
SD: 10.
87,0 gr:
2662
2662
2678
SD: 9.
87,5gr:
2702
2696
2675
SD: 14.
88,0gr:
2712
2708
2707
SD: 2.
The last 3 shot group was best in terms of velocity and size. This was predicted by QL and OBT. Decent enough load.
After this, i started on the Norma 217:
First: 300gr Berger Hybrids, Norma brass, CCI Magnum primers and Norma 217 powder (91,3gr-93,3gr). CBTO 2.875.
First group was supposed to be at around 2681 fps velocity, but instead, I got:
2836
2847
2831
SD 8.
Two shots were on top of each other and the third was a bit lower, due to breathing error.
I know Quickload can be off, but this was way of. Cases looked ok, so I tried the next load at 91,8gr.
2868
2858
2839
SD: 14.
At this load there was a bit of ejector marks on the bottom and since the data was so much off, I deciced to go back and find out what doesn't add up.... Really nice velocity on the Norma 217 though.
Distance 100m.
First: 300gr Berger Hybrids, Norma brass, CCI Magnum primers and Norma MRP2 powder (86,0-88,0gr). CBTO 2.875.
86gr:
2615
2617
2617.
Really nice SD: 1, but low velocity.
86,5gr:
2670
2648
2649.
SD: 10.
87,0 gr:
2662
2662
2678
SD: 9.
87,5gr:
2702
2696
2675
SD: 14.
88,0gr:
2712
2708
2707
SD: 2.
The last 3 shot group was best in terms of velocity and size. This was predicted by QL and OBT. Decent enough load.
After this, i started on the Norma 217:
First: 300gr Berger Hybrids, Norma brass, CCI Magnum primers and Norma 217 powder (91,3gr-93,3gr). CBTO 2.875.
First group was supposed to be at around 2681 fps velocity, but instead, I got:
2836
2847
2831
SD 8.
Two shots were on top of each other and the third was a bit lower, due to breathing error.
I know Quickload can be off, but this was way of. Cases looked ok, so I tried the next load at 91,8gr.
2868
2858
2839
SD: 14.
At this load there was a bit of ejector marks on the bottom and since the data was so much off, I deciced to go back and find out what doesn't add up.... Really nice velocity on the Norma 217 though.
I'd take your Ba and alter it until it matches up with the velocity and figure out what matches up with your nodes.
xdeano
xdeano
If I do that, I'd end up with:
Cartridge : .338 Norma Mag.
Bullet : .338, 300, Berger Hybrid OTM G7 #33106
Useable Case Capaci: 96.664 grain H2O = 6.276 cm³
Cartridge O.A.L. L6: 3.693 inch = 93.80 mm
Barrel Length : 28.0 inch = 711.2 mm
Powder : Norma 217 ?
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2,0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20,0 83 73,04 2363 3720 38969 8745 100,0 1,857
-18,0 85 74,87 2413 3878 41794 8866 100,0 1,799
-16,0 87 76,69 2461 4036 44804 8985 100,0 1,742
-14,0 89 78,52 2510 4195 48009 9100 100,0 1,689
-12,0 92 80,34 2557 4356 51425 9213 100,0 1,637
-10,0 94 82,17 2604 4519 55064 9322 100,0 1,588 ! Near Maximum !
-08,0 96 84,00 2651 4683 58943 9429 100,0 1,541 ! Near Maximum !
-06,0 98 85,82 2698 4848 63079 9533 100,0 1,496 ! Near Maximum !
-04,0 100 87,65 2744 5015 67493 9633 100,0 1,453 !DANGEROUS LOAD-DO NOT USE!
-02,0 102 89,47 2790 5184 72205 9730 100,0 1,411 !DANGEROUS LOAD-DO NOT USE!
+00,0 104 91,30 2835 5355 77240 9823 100,0 1,372 !DANGEROUS LOAD-DO NOT USE!
+02,0 106 93,13 2881 5528 82626 9913 100,0 1,333 !DANGEROUS LOAD-DO NOT USE!
+04,0 108 94,95 2926 5704 88392 9999 100,0 1,297 !DANGEROUS LOAD-DO NOT USE!
+06,0 110 96,78 2971 5881 94572 10081 100,0 1,261 !DANGEROUS LOAD-DO NOT USE!
+08,0 112 98,60 3016 6061 101205 10159 100,0 1,227 !DANGEROUS LOAD-DO NOT USE!
+10,0 114 100,43 3061 6243 108335 10232 100,0 1,194 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 104 91,30 2902 5610 93387 9523 100,0 1,280 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 91,30 2736 4985 60839 10260 100,0 1,501 ! Near Maximum !
Preassure is way up, but looking at cases, it doesn't really look that way, so something else must be off with either the powder or QL.
QL has Norma 217 at 3660kj/kg, but Normas website has it at 3766J/G, so it's higher. If I crank that up and adjust BA, then I should have a node at 1.4307MS, which corresponds to 90,3 grains at 2807fps.
Without changing that, it would be 88,6 grains for the same node and 2786FPS.
I guess I'll try going from 88,6-90,3?
The difference between QL and data is huge in this case
Cartridge : .338 Norma Mag.
Bullet : .338, 300, Berger Hybrid OTM G7 #33106
Useable Case Capaci: 96.664 grain H2O = 6.276 cm³
Cartridge O.A.L. L6: 3.693 inch = 93.80 mm
Barrel Length : 28.0 inch = 711.2 mm
Powder : Norma 217 ?
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2,0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20,0 83 73,04 2363 3720 38969 8745 100,0 1,857
-18,0 85 74,87 2413 3878 41794 8866 100,0 1,799
-16,0 87 76,69 2461 4036 44804 8985 100,0 1,742
-14,0 89 78,52 2510 4195 48009 9100 100,0 1,689
-12,0 92 80,34 2557 4356 51425 9213 100,0 1,637
-10,0 94 82,17 2604 4519 55064 9322 100,0 1,588 ! Near Maximum !
-08,0 96 84,00 2651 4683 58943 9429 100,0 1,541 ! Near Maximum !
-06,0 98 85,82 2698 4848 63079 9533 100,0 1,496 ! Near Maximum !
-04,0 100 87,65 2744 5015 67493 9633 100,0 1,453 !DANGEROUS LOAD-DO NOT USE!
-02,0 102 89,47 2790 5184 72205 9730 100,0 1,411 !DANGEROUS LOAD-DO NOT USE!
+00,0 104 91,30 2835 5355 77240 9823 100,0 1,372 !DANGEROUS LOAD-DO NOT USE!
+02,0 106 93,13 2881 5528 82626 9913 100,0 1,333 !DANGEROUS LOAD-DO NOT USE!
+04,0 108 94,95 2926 5704 88392 9999 100,0 1,297 !DANGEROUS LOAD-DO NOT USE!
+06,0 110 96,78 2971 5881 94572 10081 100,0 1,261 !DANGEROUS LOAD-DO NOT USE!
+08,0 112 98,60 3016 6061 101205 10159 100,0 1,227 !DANGEROUS LOAD-DO NOT USE!
+10,0 114 100,43 3061 6243 108335 10232 100,0 1,194 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 104 91,30 2902 5610 93387 9523 100,0 1,280 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 91,30 2736 4985 60839 10260 100,0 1,501 ! Near Maximum !
Preassure is way up, but looking at cases, it doesn't really look that way, so something else must be off with either the powder or QL.
QL has Norma 217 at 3660kj/kg, but Normas website has it at 3766J/G, so it's higher. If I crank that up and adjust BA, then I should have a node at 1.4307MS, which corresponds to 90,3 grains at 2807fps.
Without changing that, it would be 88,6 grains for the same node and 2786FPS.
I guess I'll try going from 88,6-90,3?
The difference between QL and data is huge in this case
yeah I'd try to go up to 90.3grns you might find a good load. I find that my velocity is more dependent on barrel length and the amount of time the bullet spends in the barrel to give me a consistent velocity no matter what kind of powder i plan on using. If it's saying my node is at 2733fps, i find that node and stick with it. This may be light on powder or heavy on powder to find that node, but if i'm on it, it works wonders. Quick load can be touchy if you don't enter in everything to the nats ass.
I typically run all the numbers a few times to catch any errors that may have occured.
xdeano
I typically run all the numbers a few times to catch any errors that may have occured.
xdeano
How do you know which node to choose from the OBT chart and using quickload? I just purchased quickload this week and installed it tonight. I appreciate the help again.
Waveslayer: You need to check out OBT and compare your barrel length with the times in MS for barrel travel time that they have. Then you try to find a load, that matches the barrel time that OBT has as a node for your barrel.
You just need to have everything filled out correctly, as case capacity for instance might be very different from what QL has as standard.
Xdeano:
I mailed the founder of Quickload about the powder not performing the way QL anticipates and he phoned me up and suggested some steps I could take in order for it to work. One was changing Z1 to 0,9. This doesn't give me the correct velocity that my chronograph measured, so I guess everything will have to be approximated from now on with the pwder. I'll try running 88,6-91,2 and see what results can be gotten.
It's just a bit annoying, that it has to be guesswork from here on, since the numbers don't fit very well.
Waveslayer,
PM me your email and i'll send you a file with all the nodes on it.
xdeano
Not sure what to say i guess. I'd go load up a few rounds, shoot them over the chrony and get some velocities. Then go back to the QL and punch in your load amount and start working over the Ba until it matches up to your velocity off your chrony. Then start bumping up your load until you get to the right node. Then load and test. Then come back with the velocities and do it over again to refine your results.
I find that the Ba of most of the MFG's on their list are just a bit off, not that they're wrong, but they can't manufacture the same product every time. It's like making bread. The flower is coming from different fields, and the eggs are coming from different chickens. haha.
xdeano
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