what is the most used chamber neck diameterI will say my loose neck shoots very well with barts and lt powder
I have a 30 br and a 300 blk
what is the most used chamber neck diameterI will say my loose neck shoots very well with barts and lt powder
Doesn't that form a donut upon firing?no, barrel has a 0.243 bore and has a 6BR chamber and I open up the neck to 0.336 with a neck reamer with a 0.243 bushing
barrel is now a fireforming barrel without 6mm bullets bouncing off sides of the bore and being unsafe.