hoytaddict
Active Member
I had to pull some bullets today, but I have a question. Do I need to resize the case mouth before I try to seat another bullet?
Do I need to resize the case mouth before I try to seat another bullet?
I don't see any value in resizing.
Tension amounts to neck springback from the expansion of bullet seating. When he pulled bullets the necks simply sprung back. And when he re-seats, the springback will grip bullets as it already had been.
What he'll notice is that re-seating force is lower, but actual bullet grip is unchanged. He could do this 100 times and nothing will change about it, because there is no further sizing in this.
I have tried shooting without re-sizing and found accuracy to be erratic. You are introducing variable neck tensions into the bullet release. Seating a bullet increases neck diameter, and pulling it does not induce enough spring back to return it to the sizer die neck diameter. For that reason, it needs to be run thru again.
Then it depends on how picky you are about neck tension. You do not HAVE to but it will more than likely yield better results to go ahead and run the through the die again. When reloading keep this rule of thumb in mind "Consistency is key, keep variables to a minimum within your control" there are about 15 billion practices you can adopt and I dont know if anyone does them all. just pick the ones you want to do as you see fit and try to do it the same every time.Yes I have the standard rcbs dies with the sizing plug. And the rounds in question were my loads (not factory) without a crimp