EddieCoyle
Member
I posted this over at the S&W forum, I figure I'd try here too:
I loaded up about a hundred .460 Magnums with 240gr Hornady XTP Mag bullets, 46.5 grains of H110, and CCI large rifle primers.
The velocity (measured about 15' from the barrel) ranged anywhere from 1749 to 1990 fps. The powder charges are very consistent, as were the crimps (I measured them after I began to notice the wide velocity variations). I trimmed all of the cases to the same length before I started to ensure that I'd get good consistent location on the crimps as well.
Here's my question:
Should I be using large rifle Magnum primers instead of large rifle primers? Would this help to stabilize the velocity?
I loaded up about a hundred .460 Magnums with 240gr Hornady XTP Mag bullets, 46.5 grains of H110, and CCI large rifle primers.
The velocity (measured about 15' from the barrel) ranged anywhere from 1749 to 1990 fps. The powder charges are very consistent, as were the crimps (I measured them after I began to notice the wide velocity variations). I trimmed all of the cases to the same length before I started to ensure that I'd get good consistent location on the crimps as well.
Here's my question:
Should I be using large rifle Magnum primers instead of large rifle primers? Would this help to stabilize the velocity?