Thread: Choosing Correct Bushing for Neck sizing

Originally Posted by Hayden C

I believe that you measure your neck width on a loaded round and subtract .001" to determine correct bushing size?

You can subtract 001"-003" depending on how much neck tension you require. Remember too that a .001" reduction bushing is only .0005" neck tension and then you've got spring back. Most reloaders use a bushing .002"-003" less than a reloaded round.

Originally Posted by 10-Ring

You can subtract 001"-003" depending on how much neck tension you require. Remember too that a .001" reduction bushing is only .0005" neck tension and then you've got spring back. Most reloaders use a bushing .002"-003" less than a reloaded round.

1k BR guys are using .003 normally now. Do not go too light. You will have loose neck tension, bullets sliding back into the case etc.