6BR Group size

[Edward]

I'm using Berger 105 VLD and H4895 (1:8 twist barrel) What group size can I expect at 100, 200 and 300 yds? Would a different bullet work better at these distances? Thanks Ed

 

[fdshuster]

Edward: As dmoran said, and you will have to do testing with various bullets in YOUR barrel. They are all different.

My 8 twist 6BR chamberings prefer the plain vanilla 105 Bergers, #24428. Others report the most success with the VLD's, and others with the Hybrids.

Buy a box of 100 of each, load them identically, and compare the results.

 

[expiper]

Ed,,,I think the most important factor is seating depth,,,you can change the charge wt. by a LOT and not see much change,,,but the diff. between jam and jumping is significant!!!,,,,as to group sizes when you got it dialed in ,,,,typical at 100yds--1/4"---200 yds 1/2" ---300 yds 3/4"....you will get some better and several worse,the big factor there is WIND,,,shoot in it,,,dont try to avoid it ,,,practice in it,,,if so when you attend a shooting match and the wind is blowing (and it ALWAYS is)you will be ready,,,,Roger

 

[SS427]

The quality of the rifle and barrel will be a big factor. If it is a custom or even a Cooper, .25 is realistic at 100 yards. If it is something else or poorly built, 1/2 inch or more might be the reality, although I think a gunsmith would have to try to get a 6BR to shoot less than 1/2 inch.

Myself, I have never been able to have a perfect 2x and 3x increase in group size at 200 and 300 yards. Not sure if it is air movement or what, but at 200 yards group size increases by a factor of about 2.25x and at 300 yards by a factor of 3.5x.

 

[marwitz89]

I always seem to have the best group at those yardages when I shoot a 1 shot group.

 

[WyleWD]

Ed,,,I think the most important factor is seating depth,,,you can change the charge wt. by a LOT and not see much change,,,but the diff. between jam and jumping is significant!!!,,,,as to group sizes when you got it dialed in ,,,,typical at 100yds--1/4"---200 yds 1/2" ---300 yds 3/4"....you will get some better and several worse,the big factor there is WIND,,,shoot in it,,,dont try to avoid it ,,,practice in it,,,if so when you attend a shooting match and the wind is blowing (and it ALWAYS is)you will be ready,,,,Roger

+1 expiper is exactly correct..... as is fdshuster. WD

 

[Steve Ladino]

Maybe... but you need to be able to tell the difference. Without a controlled environment to shoot in how are you going to evaluate the performance of other high quality bullets? That said I shoot the 105 VLD's and they are very good. I hear the Hy Brids are popular and the 108's are less popular but good too. I think they all are good enough to stick with, just pick one and go with 500 then try something else the next 500.

 

[rpierce]

Not sure about your rest setup and all that but a properly built 6br should be able to shoot under 2" groups at 600 yards. Of course this is dependent on shooter, loads, conditions etc. I always test my guns the first or last hour or two of daylight. No mirage and very little wind. My last 6br barrel I put on my gun I shot five 5 shot groups at 600, biggest was 1.8 inches. I started the 5 shot groups with 7 rounds down the barrel. I was using 30.3 gr of varget, cci 450 and 107's. I haven't shot the sierras in a few years now since the 105 hybrids came out. I have had great luck with the hybrids with my 6BRX. Good luck and have fun shooting.

 

[matty]

I am new at the 600 yard game and am taking advise as I go and learn for myself. I was told and do tune my 600 yard rifle at 300 yards, expecting it to shoot around a 5/8" or better 3 shot groups (to save bullets powder ect) to be competitive at 600. Do be prepared to switch powder, bullet, seating depth, ect to get it where it needs to be.