Jammin Bergers

[acasto]

OK. Heres what I got.

6X47 Lapua
Loading 39.9 grains of 4350 in fire formed Lapua brass.
105 SMK and Rem 7 1/2 primers.
3050 vel and groups real well.,Ladder test put 3 through one small hole at 100yds) Twice
Bullets seated .010 off the lands.

Using Berger 105VLD Target jammed .010, the velocity jumped to 3150+ and group size doubled. Seeing some signs of pressure.,bright spots from the ejecter)

Should I have backed the powder down to stay in the 3050 range?
Should I try jumping the Bergers?

The Berger group was still under 1 inch at 200yds.

Thanks
Tony

 

[fivering]

Why don't you try just touching the lands, and after trying that work in .002 increments + and - to optimize?

 

[HPMike800]

Wow thats a big jump in velocity for just jambing them. I would build a load jumping them for now since your getting good results. I jump my VLD load 0.060' right now.