View Single Post
Old 12-30-2012, 8:46 PM
Ahhnother8 Ahhnother8 is offline
Senior Member
Join Date: Feb 2007
Location: Orangevale, CA
Posts: 1,454
iTrader: 6 / 100%

Originally Posted by GeoffLinder View Post
Wrong! Other way around, seat deeper and you INCREASE the pressure, not decrease it. So drop powder charge slightly every time you decrease OAL.
Have you tried it? I did the testing for the CA Service Rifle Team. What I said is true. How/why, I don't know. But I have fired thousands and thousands of rounds over a chronograph. It kind of makes sense though. When a bullet is jammed, pressures go up. As you seat the bullet deeper, pressures go down. Is there a limit to this rule? I don't know, but up to .250+" of bullet jump and pressures don't go up. Sometime I will post some targets with the load data on them. Some of the charge weights might give some here a heart attack.
Reply With Quote