Shooters World Precision in 6BR

Olen_4504

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May 16, 2018
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Montpelier, Virginia
Anyone else using Shooters World Precision in 6BR?

i just picked up 8lb and some 109 hybrids.

curious if anyone else is doing something similar and where your loads/speeds are at.

I'll be using a 28" 1:7 kreiger w/lapua brass
 
Haha that’s the truth you can at least get it easily without trading body parts. There load data is really conservative I’ve found I’m running 32.8 in my dasher with no pressure.
 
I’ve found it takes more of it to match the velocity i had with Varget. Very good SD numbers, I haven’t verified the temp stability, though.
 
OK, just completed an admittedly hasty load dev. 28.0g-29.6g 0.020" jump

40 degrees F
28" 1:7
Loaded on Chargemaster lite

I only had so much prepped brass to work with so i only did 4 shot groups. As you can see most charges had high SDs and ESs. there was one node at 28.8-29.0 that the SDs lowered and the speed flattened out.

28.0g
Avg: 2717
SD: 13.2
ES: 29

28.2g
Avg: 2720
SD: 13.0
ES: 28

28.4g
Avg: 2734
SD: 14.4
ES: 31

28.6g
Avg: 2751
SD: 20.8
ES: 38
(one shot didn't read here - two rounds were 2761 and 2765 - the 3rd was 2727 and the 4th didn't read)

28.8g
Avg: 2763
SD: 8.0
ES: 19

29.0g
Avg: 2767
SD: 4.4
ES: 10

29.2g
Avg: 2778
SD: 15.3
ES: 36

29.4g
Avg: 2803
SD: 10.4
ES: 24

29.6g
Avg: 2796
SD: 9.1
ES: 22


I took 28.9g and loaded up 5 rounds at 0.025" jump and 6 rounds at 0.030" jump:

28.9 @ 0.025"
Avg: 2771
SD: 6.2
ES: 15

28.9 @ 0.030'
Avg: 2785
SD: 2.6
ES: 6


I didn't have enough brass to recheck 28.9 at the 0.020" jump to see if it stayed flat at 2765ish i wanted to check seating depth cuz the groups were average at best.

so jumping it 0.030" at 28.9g gave me an extra 20fps and the SDs were signifcantly lower.

i don't have any more brass prepped but when i do i'll double check a few things.

I was shooting modified prone off a small spool - my groups were nothing spectacular. 0.5-0.75

in a few weeks i'll be at a proper range with a proper concrete bench where i can really see how it groups at 100 and distance.
 
OK, just completed an admittedly hasty load dev. 28.0g-29.6g 0.020" jump

40 degrees F
28" 1:7
Loaded on Chargemaster lite

I only had so much prepped brass to work with so i only did 4 shot groups. As you can see most charges had high SDs and ESs. there was one node at 28.8-29.0 that the SDs lowered and the speed flattened out.

28.0g
Avg: 2717
SD: 13.2
ES: 29

28.2g
Avg: 2720
SD: 13.0
ES: 28

28.4g
Avg: 2734
SD: 14.4
ES: 31

28.6g
Avg: 2751
SD: 20.8
ES: 38
(one shot didn't read here - two rounds were 2761 and 2765 - the 3rd was 2727 and the 4th didn't read)

28.8g
Avg: 2763
SD: 8.0
ES: 19

29.0g
Avg: 2767
SD: 4.4
ES: 10

29.2g
Avg: 2778
SD: 15.3
ES: 36

29.4g
Avg: 2803
SD: 10.4
ES: 24

29.6g
Avg: 2796
SD: 9.1
ES: 22


I took 28.9g and loaded up 5 rounds at 0.025" jump and 6 rounds at 0.030" jump:

28.9 @ 0.025"
Avg: 2771
SD: 6.2
ES: 15

28.9 @ 0.030'
Avg: 2785
SD: 2.6
ES: 6


I didn't have enough brass to recheck 28.9 at the 0.020" jump to see if it stayed flat at 2765ish i wanted to check seating depth cuz the groups were average at best.

so jumping it 0.030" at 28.9g gave me an extra 20fps and the SDs were signifcantly lower.

i don't have any more brass prepped but when i do i'll double check a few things.

I was shooting modified prone off a small spool - my groups were nothing spectacular. 0.5-0.75

in a few weeks i'll be at a proper range with a proper concrete bench where i can really see how it groups at 100 and distance.

I'd be super curious to see how the velocities and SD change if you could stick the ammo in a cooler with a hot pack? say 100*
 
OK, just completed an admittedly hasty load dev. 28.0g-29.6g 0.020" jump

40 degrees F
28" 1:7
Loaded on Chargemaster lite

I only had so much prepped brass to work with so i only did 4 shot groups. As you can see most charges had high SDs and ESs. there was one node at 28.8-29.0 that the SDs lowered and the speed flattened out.

28.0g
Avg: 2717
SD: 13.2
ES: 29

28.2g
Avg: 2720
SD: 13.0
ES: 28

28.4g
Avg: 2734
SD: 14.4
ES: 31

28.6g
Avg: 2751
SD: 20.8
ES: 38
(one shot didn't read here - two rounds were 2761 and 2765 - the 3rd was 2727 and the 4th didn't read)

28.8g
Avg: 2763
SD: 8.0
ES: 19

29.0g
Avg: 2767
SD: 4.4
ES: 10

29.2g
Avg: 2778
SD: 15.3
ES: 36

29.4g
Avg: 2803
SD: 10.4
ES: 24

29.6g
Avg: 2796
SD: 9.1
ES: 22


I took 28.9g and loaded up 5 rounds at 0.025" jump and 6 rounds at 0.030" jump:

28.9 @ 0.025"
Avg: 2771
SD: 6.2
ES: 15

28.9 @ 0.030'
Avg: 2785
SD: 2.6
ES: 6


I didn't have enough brass to recheck 28.9 at the 0.020" jump to see if it stayed flat at 2765ish i wanted to check seating depth cuz the groups were average at best.

so jumping it 0.030" at 28.9g gave me an extra 20fps and the SDs were signifcantly lower.

i don't have any more brass prepped but when i do i'll double check a few things.

I was shooting modified prone off a small spool - my groups were nothing spectacular. 0.5-0.75

in a few weeks i'll be at a proper range with a proper concrete bench where i can really see how it groups at 100 and distance.

You got to up that charge weight. Probably up into the 30g-30.4 ish range.
 
for a BR? The bolt left was already getting a little heavy at 29.4-29.6

Given that I've seen people running this powder at their same charge weights as varget, my varget load was 30.4 with no pressure but I opted for 4895 for a bump in speed. That's the only reason I mentioned those charge weights. YMMV
 
Little bit of an update, but more of a venting moment.....

I shot the same load in 65 degrees F today. (25 degrees warmer than original load dev). speeds were the same. that's a good sign.

not a huge temp swing - but still. that was about the only good thing. groups were shit. SDs were 10+


I'm holding off on my opinions of this powder right now. my initial results are telling me that it's not maintaining single digit SDs across charges like my H4895 loads. even my "bad loads" with H4895 had better SDs. and it's not consistent so far, that same load was an SD of 10-11 today, last week it was 2.5

i'm getting ever so slight heavier bolt lift at 28.9g @ 2785fps with these 109s. that seems odd/slow to me.

I water tested the load for shits and giggles. tell me why the bolt lift was signifcantly LIGHTER, the group was TIGHTER, and the speeds were 30fps SLOWER.

my load with H4895/112s was really low as well on this barrel and was still getting funky primers. had to drop it to 28.1g still getting pressure signs on primers

i keep getting a carbon ring and thinking that's what is causing my pressure. I cleaned it - 70rds later - another ring. that's my main reason for switching to this Shooters World Powder.


i'm having a new barrel spun up and i'm going to resume testing in that. i'm 1000 rounds on this current barrel and haven't found anything it shoots well and consistent and problem free. i'd hate to formulate an official opinion on this powder until i know i gave a capable barrel.

i am going to try switching back to H4895 and the 109 hybrids and see what happens.

i changed both powder and bullets at the same time. groups are blah. SDs are blah.

but groups have been blah all along with this barrel. not just with this powder.

I used to enjoy this part of reloading, fine tuning things and finding out what shoots best. now i'm just aggravated.

2 - 3 barrels in a row i would break in - find a load, and basically shoot that same load from then on. i've been chasing my ass with this current barrel. but i also changed a lot of stuff around the same time and i'm honestly being too lazy to try to narrow it down.


I'm leaning toward a barrel problem.

i shot H4895/112s in my last BR barrel at 2775 with no problems. in the hot summer heat/rain. 29.2g

that same load in this barrel was piercing primers left and right even on cool days. that's why i ended up at 28.1g. that seems outrageously low for a BR even with 112s.


sorry i don't have better results with this stuff. if anyone test it in a BR - please report back with your speeds. i feel like i should easily be able to run it 2800fps at least.

or maybe i'm way off base?
 
went out this morning and shot a few rounds with the shooters world precision in a 6BRA..fed205M and a 105 hybrid .005 off the lands...this powder is about 100fps slower than varget in my rifle...26" bartlein...but im pretty surprised with how well it shoots...im going to try it with some CCIBRs and 450s next and run it up a little more...at 31.9g i had zero signs of pressure...seems to burn clean as it took 10-12 rounds to foul from clean bore....4 rounds on each dot.

this powder looks and smells like IMR even went fired....
85689D31-217B-4EFF-A383-CC26B57BA877.jpeg
7C284A94-A8BB-4D10-B866-C391BB311EB2.jpeg
 
ok im pretty impressed with this shooters world precision and would not hesitate to run it in my BRA if i could not find varget...it is slower for sure but just stoke it up a bit and run a CCI450 and your good to go.

i only shot 1 round of 4 at each dot over the chrony but it looks like the CCI450 added about 20-25FPS to the 31.9g load compared to yesterday...i went up to 32.3g and pretty sure i could get 32.7g before compressing much...ZERO pressure at 32.3g...heres the groups...

44914B76-D074-4BDF-B0D8-3EE338341A57.jpeg
AB3A1D8B-F986-4D85-93B3-8ED2EEEA007E.jpeg
 
ok im pretty impressed with this shooters world precision and would not hesitate to run it in my BRA if i could not find varget...it is slower for sure but just stoke it up a bit and run a CCI450 and your good to go.

i only shot 1 round of 4 at each dot over the chrony but it looks like the CCI450 added about 20-25FPS to the 31.9g load compared to yesterday...i went up to 32.3g and pretty sure i could get 32.7g before compressing much...ZERO pressure at 32.3g...heres the groups...

View attachment 7268382View attachment 7268383
Stumbled upon your old post looking for a good charge for my BRA with SW PR. I loaded 30.5 grains and had slight pressure and only 2747fps. My rock creek must be slow! That’s awesome results you got. I got 200 rounds through the tube now and the pressure has seemed to lighten so maybe I’ll keep experimenting with it. Are you using Lapua or Alpha brass?