Thread: Case neck sizing and effect on accuracy

Originally Posted by Nick-D

My deal with neck sizing is that you get good consistency for a few firings then have to bump the shoulder anyway which gives you essentially a different load every few firings. Not a massive deal but still somthing you have to consider and adjust for.

I tested this with my 260Rem - was here a measurably difference in velocity between cases I had just put through the bump die and those just fire formed. Yes, I found a very slight change in average velocity (lower on those just been through the bump die) - not enough for me to worry about in practical rifle competition out to and past 1000m.

Originally Posted by Nick-D

But at the end of the day it's all semantics and unless you are a br shooter or f class guy just use whatever system work for you. Carefull loading either way will make loads that shoot better than most rifles and shooters anyway.

I'm hunting not bench resting so prefer the simplicity and reliability of partial fl sizing

Absolutely agree with this approach. For my hunting rifle I neck size but as I have about 100 cases on the go and only need to bump about every 5 reloads it is going to take me a long time and a lot of hunting trips before I need to bump the shoulders on them.