1000 yard loads for the 6BR

[Tokimini]

In a week I'm going to be taking my 6BR to the Williamsport 1000 yard range and was wondering if anyone had any good long range loads. The barrel is an 8 twist, the bullets will be Hornady 105 gr match,
and for powder I have Varget, Benchmark, H322, Viht N140, and CFE223. The barrel seems to prefer faster burning powders like the H322, even for heavy bullets.

Thanks

 

[lrgoodger]

I tested 105 hybrids and 105 amax side by side with 31 grains of varget a couple of years ago. They held the same vertical out to 500 yards. I posted the targets somewhere in this forum when there was a doubtful response. I subsequently killed a prairie dog at 1296 yards with the hybrid. I did find the hybrid to be a bit more accurate overall than the amax.

Be careful to work up the load. 31 grains of varget works in my custom 6BRs but it blows primers in the Savages.

 

[Tokimini]

Thanks for that caveat at the end. My rifle is a Savage with a McGowen 28" barrel. I tried 30 gr of Varget with the 105s. The primers were fine but got much better accuracy at 100 yards with 28.5 grains. I may try it again for the 1000 yard shoot.

 

[lrgoodger]

You've got a custom barrel on it, so it will probably be OK at 31. It's those railroad track filled Savage factory barrels that cause the pressure increase. All the ridges from those tooling marks equals increased resistance to the bullet moving forward, which means higher pressures. The barrel that blew the primer at 31 grains used to show pressure signs at 30.5 grains, but now after smoothing the tooling out with 800 bullets the pressure is easing up a bit.

You have the best conclusion, and that is shoot it where it is most accurate. My Savage 8 twist is best right at 30.0 grains with varget.

 

[letronshootit]

I have a McGowan 1 in 8 6br on a Savage PTA as well that I have 2 seasons on in competition at 1k. I was also using the Hornady 105 Amax, these are very accurate bullets at 100yds but I have had better results at 1k with the 105 Berger Hybrid. At 100yd Hornady actually was more accurate though and I liked the price. Varget 30gr Lapua cases and CCI 450 primers worked with both bullets.

 

[Tokimini]

I have a McGowan 1 in 8 6br on a Savage PTA as well that I have 2 seasons on in competition at 1k. I was also using the Hornady 105 Amax, these are very accurate bullets at 100yds but I have had better results at 1k with the 105 Berger Hybrid. At 100yd Hornady actually was more accurate though and I liked the price. Varget 30gr Lapua cases and CCI 450 primers worked with both bullets.

Interesting. What was your seating depth with the Hornady's? I'm trying jammed into the lands and .005 off.

 

[letronshootit]

Seating depth is going to be different between rifles as in distance to lands relevant to wear. Our 6brs at the time of using the Hornadys were 650rds and 1250rds fired respectively, the 650rd barrel a McGowan liked .020 off the lands, the other was a Shilen that liked .085 off. These were both capable of 100yd ragged holes, more so than the shooter. The shortcoming was 1k for the bullets, weighing them is an eye opener as to why sorting is a necessity.

 

[243DH]

28.5-30.0gr h4895 works great with 105 hybrids.