6br loads

[AckleymanII]

In the late 1980's, Gene Harwood who was a National Director for the Benchrest Shooter's Assocation sat a World Record with is own 60g HP using H335. When I took him shooting ground squirrels and Jack Rabbits, he had a fit when he saw me shooting h322 in my 6 BR.

24" barrels, short freebore, 60g, H335, Rem 7 1/2 should produce 3700 fps in a 12 or 14T. 60g usually like to jam the lands to touch, NOT off the lands as a general rule of thumb.

Barrels are very different along with lot# of powder. It is not unusual to get groups in the zero's to very low 2's, but wind plays a huge part of shooting groups this small, not to mention bench techniques.

High volume p. dogs or other varmint use is different from informal/formal benchrest shooting. If you are shooting 300- 600 rounds a day with a single rifle, you better be shooting a powder that cleans up easy and does not fry the throat. If you try shooting high volume with H4895, N133, or N135, it is possible that your barrel's throat will be shot out within a three or four days of shooting.

We worked up our loads in S. Ca. in 70-75* heat and drove the the Dakota's to shoot p. dogs.

 

[Lefty Trigger]

What kind of speeds are you all getting with your 60(s) grainers?

The 60gr Sierra loaded with 32.3gr of H4895 and Fed 205m primers in "Norma" brass is giving me 3630 fps and a SD of 3.6. Is important to note the Norma brass, it has less capacity than Lapua so this load in Lapua does not shoot well. Might if you cranked it up to match the capacity of the Lapua case.
Savage 30" barrel 1-8 twist

 

[divingin]

My load is the 64 Berger .010 in lands, Laupa brass. CCI 450, with 31.5 grs AR-Comp. With this I get mid 1's - very low 2's from my trued 700. Very humble set-up.

Pretty close to what I run, but with Varget. 31 (or 30.5 if it's hot out) shoot well with the Berger Columns.