Thread: Seating tests for 147gn ELDM

Originally Posted by Edunn

Good info, thanks @Spitfire!

Any tips on getting extreme consistency out of the seating die? I was getting some at 2.810 COAL so was putting them back through, but most +/- 0.003" (3 thou).

I've started by getting some OK groups at 100m at different charges, and am now considering fiddling with seating depth.

Depending on your projectiles they could vary that much themselves, a more accurate method is to measure to the ogive as that is the critical dimension to get consistent, ogive to lands.

Other than that use all the same brass with the same number of fireings, annealing will help with consistent neck tension and hence seating depth.