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Bart B. · May 7, 2013, 09:28 PM

I've shot test groups at longer ranges with cases full length sized in standard dies with necks lapped out to 2 thousandths less than loaded round neck diameter and bullets seated in the same die types equal to or better than current benchrest records. Go figure.

Redding and RCBS full length bushing dies are probably the best commercially available ones. One die with a set of bushings of different diameters will accomodate a range of neck wall thicknesses. They don't size fired case necks all the way to the case shoulder and may not center the sized case neck as perfectly centered on the case shoulder like a lapped out standard full length sizing die does, but the results with them, when properly set up and used without decapping stems, are hard to beat.

Die type's about 60th on my list of the 100 things needed for best accuracy. But they must not use expander balls and size the fired case neck all the way back to the shoulder setting the shoulder back a couple thousandths for overall best results.

May 7, 2013, 09:28 PM	#4
Bart B. Senior Member Join Date: February 15, 2009 Posts: 8,927	I've shot test groups at longer ranges with cases full length sized in standard dies with necks lapped out to 2 thousandths less than loaded round neck diameter and bullets seated in the same die types equal to or better than current benchrest records. Go figure. Redding and RCBS full length bushing dies are probably the best commercially available ones. One die with a set of bushings of different diameters will accomodate a range of neck wall thicknesses. They don't size fired case necks all the way to the case shoulder and may not center the sized case neck as perfectly centered on the case shoulder like a lapped out standard full length sizing die does, but the results with them, when properly set up and used without decapping stems, are hard to beat. Die type's about 60th on my list of the 100 things needed for best accuracy. But they must not use expander balls and size the fired case neck all the way back to the shoulder setting the shoulder back a couple thousandths for overall best results. Last edited by Bart B.; May 8, 2013 at 06:23 AM.