How much H1000 are you using to push a 300gr bullet(.338LM)?
- Thread starter Creature
- Start date
89.5 g of H1000 & Berger 300 in Lapua cases getting 2700+- fps in my piece of shit Stuckvage (savage) but that's a whole different subject.
Lapua Brass
91.0 gr H1000
F215
300gr OTMs seem to work for me
I'm currently playing with the seating depth to tighten up the groups and I also have a ^^^ Stuckvage that's I'm not too happy with.
87.5gr H1000
FGMM mag primers
Lapua brass
300gr Scenars
30" Chanlynn @ 2830 .3@100 I don't need to over pressure with this bbl but did @ 91.5gr @2920fps but didn't group well at all
Sully
FGMM mag primers
Lapua brass
300gr Scenars
30" Chanlynn @ 2830 .3@100 I don't need to over pressure with this bbl but did @ 91.5gr @2920fps but didn't group well at all
Sully
87 gr, lapua brass trimmed to 2.714, FGMM 215 primer, SMK, 15k off lands in my BA good to a mile with no stuck cases.
Last edited:
I started doing work ups this week. Using lapua brass, fed 215 primers, 300 gr smk. Started seeing pressure signs around 89 gr. In my DTA. Went up to 91 but was getting sticky bolt lift and noticeable extractor marks. Think I'm going to play with the 87-88 range, seemed to be grouping well there.
Case length
Don't go by older Sierra manuals and CDs when trimming cases.
Also my 110BA has a need for cases .010 shorter than some new brass mfg's produce also,
but not Lapua brass.
If you buy new Hornady case and point.
Don't go by older Sierra manuals and CDs when trimming cases.
Also my 110BA has a need for cases .010 shorter than some new brass mfg's produce also,
but not Lapua brass.
If you buy new Hornady case and point.
I was starting to see some pressure signs @ 91.0 gr. H1000 in my rifle with 300 gr Bergers, -0.005" lands, Lapua brass.
My pet load is:
89.5 gr. H1000
Lapua brass
300 gr. Berger
Fed 215
-0.005 off lands (2.976" @ogive)
2794 avg vel. in Savage 110BA (Magnetospeed)
No stuck cases here, works in my gun doesn't mean will work in your gun, YMMV.
My pet load is:
89.5 gr. H1000
Lapua brass
300 gr. Berger
Fed 215
-0.005 off lands (2.976" @ogive)
2794 avg vel. in Savage 110BA (Magnetospeed)
No stuck cases here, works in my gun doesn't mean will work in your gun, YMMV.
I have not had any stuck cases, or obvious signs of pressure either (crossing fingers) with the 92gr. I am not really pushing the lands with the scenars as you are with the bergers, wondering it that might be why you are getting that velocity with 2.5gr less powder?
I really wanted the bergers to work with my 338, they work GREAT in my 308. I worked with pushing the lands and various tweaks and never got much better than 3/4 MOA. First time I loaded the Scenars I was getting < 3/4 down to < 1/2 MOA with my final loads, so I just got stuck on the scenars.
I'm getting very nice groups and haven't even tried changing the jump, -0.005 was just where I started and when I found a node at 89.0 - 89.5, I just haven't tried anything else. It seems to shooting better at this point than I am. :-\
That's pretty much how I see it. I'm getting around 0.5 MOA with this load, maybe a little better. That's good enough for me so I bought enough components to wear this barrel out.
I'm at 91gr of H-1000, Lapua brass, 300g Bergers. Gives me 2710fps on average from my 26-inch barrel (RWS build). Zero pressure signs.
Don't have any H1000.
However, did have my first stuck case just last week.
94 grs N570, 300gr Berger OTM, don't remember OAL (3.8__) -- way longer than my magazine.
Hammered it out with at 5/16" dowel and a 4# sledge. Based on the extractor dog being at 3:00 when the bolt is up, the sicking point in the barrel is at ~8:45
Take a look at the tracks across this case. The skipping is the binding that resulted with each pounding of my hammer.
Called Savage customer service and told them about it. Nice lady on the phone, but she warned me, "we use Black Hills ammunition. If we fire a round in your gun and it doesn't get stuck, we send it back to you."
Having fired 40 rounds of factory ammo and 10 rounds of reloads (RL22 or N570 @ < 86grains), I bet the ammo they use will NOT get stuck.
However, there's definitely evidence of a problem. I'll fix it...
<tbody>
</tbody>
However, did have my first stuck case just last week.
94 grs N570, 300gr Berger OTM, don't remember OAL (3.8__) -- way longer than my magazine.
Hammered it out with at 5/16" dowel and a 4# sledge. Based on the extractor dog being at 3:00 when the bolt is up, the sicking point in the barrel is at ~8:45
Take a look at the tracks across this case. The skipping is the binding that resulted with each pounding of my hammer.
Called Savage customer service and told them about it. Nice lady on the phone, but she warned me, "we use Black Hills ammunition. If we fire a round in your gun and it doesn't get stuck, we send it back to you."
Having fired 40 rounds of factory ammo and 10 rounds of reloads (RL22 or N570 @ < 86grains), I bet the ammo they use will NOT get stuck.
However, there's definitely evidence of a problem. I'll fix it...
<tbody>
</tbody>
86.5g H1000
Lapua Brass
215m
SMK300g
3.680 COAL
Barrett MRAD
This rifle seems to like this load 1/4 moa groups
Lapua Brass
215m
SMK300g
3.680 COAL
Barrett MRAD
This rifle seems to like this load 1/4 moa groups
Stuckage is right!
Took photos of my chamber last night, you could see the brass tailings where the case dragged over the high spot. I took my dental pick and pulled the detritus off but could not feel any high spot. However, I don't believe I would feel anything up to almost 10 mils if it's a gradual build. If it were a sharp edge, sure. I'll post those when I remember to pull my camera mem card.
Problem is, to measure any inconsistencies, I would need a really nice bore measurement tool unless I pull the damn thing apart. This set is probably a POS -> Telescoping Bore Gauge Set 6 pcs
Even then I'd probably miss it. Need an ID runout gauge.
im in the middle of a runup with 300 scenars and h1000,lapua brass and fed 210m. gun is a rem 700 pss with a 6-20x50 zeiss conquest in burris xtp rings. i shot the groups at 200 from a bullsbag. these are 2 shot groups to see if anything was worth investigating further. the 5/8" grp is 88.5 and the 2 in one hole is 89.5g
i will run them thru a chrony and see how fast they are going next range trip
i will run them thru a chrony and see how fast they are going next range trip
Attachments
Last edited:
