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Ifishsum · January 23, 2013, 06:54 PM

That seems to be a bigger difference than I've ever experienced, but I bet you can find it again within a grain or so up or down from your original load. CCI primers have been the most consistently available primers for me so I've developed almost all of my loads with them, luckily haven't been forced to switch brands more than a time or two.

Jerry - I've had a number of rifles that just wouldn't shoot BT bullets as well as flat base. I think the BT design is just not as forgiving of small inconsistencies in the barrel, crown, etc as flat base. Usually I just give up and feed it what it likes, of course when available supply isn't an issue.

January 23, 2013, 06:54 PM	#3
Ifishsum Senior Member Join Date: September 15, 2005 Location: Oregon Posts: 1,033	That seems to be a bigger difference than I've ever experienced, but I bet you can find it again within a grain or so up or down from your original load. CCI primers have been the most consistently available primers for me so I've developed almost all of my loads with them, luckily haven't been forced to switch brands more than a time or two. Jerry - I've had a number of rifles that just wouldn't shoot BT bullets as well as flat base. I think the BT design is just not as forgiving of small inconsistencies in the barrel, crown, etc as flat base. Usually I just give up and feed it what it likes, of course when available supply isn't an issue. Last edited by Ifishsum; January 23, 2013 at 08:14 PM.