Thread: Testing a conventional approach to load development

Being honest, i feel the two biggest things that effect group size (once you have the optimum powder with a consistent batch) is seating depth and primer type.

Excellent idea to compare best to worst Gimp. WTF didn't i think of that lol. It never occurred to me.

You can get random acts of improbable accuracy too. I once did a full day trialing all sorts of things. 200 rounds total. Then as a laugh i shot 5 ugly, scratched up pre pulled ELDXs that i had set aside as barrel warmers.
The bloody joke rounds all went through the same hole and i couldn't actually measure anything. Probably the tightest group in my life done with the shittiest reloading effort of my life. Did my head in