Author: britrifles
Subject: Reloading 303 with crimp
Posted: September 13 2023 at 8:39am
I did for only a very short time when I first started reloading .303. If your dies are set up correctly, there should be no need (nor advantage) to crimping. It does introduce another variable, and can arguably be detrimental to accuracy. None of the competitive shooters I know crimp their cases.
Subject: Reloading 303 with crimp
Posted: September 13 2023 at 8:39am
I did for only a very short time when I first started reloading .303. If your dies are set up correctly, there should be no need (nor advantage) to crimping. It does introduce another variable, and can arguably be detrimental to accuracy. None of the competitive shooters I know crimp their cases.
Are you F/L sizing or Neck sizing? Both should provide sufficient neck tension, typical neck ID's should be 0.002 inches smaller than the bullet diameter. I assume your loading a .311 diameter bullet?
One more thing, presses have a significant mechanical advantage, so what might "feel" like a low seating force, could well be 30 lbs or more. Try pushing the tip of the bullet against your bench with about 20 to 30 lbs and see if the bullet moves. If it doesn't then no need to worry. If it does move, measure the diameter of the expander button on the decapping rod; it might be oversize.