Allen One1
Member
Using small primer brass (6.5 Creedmoor) is there a noticeable difference between running a standard primer vs. using a magnum primer? Any testing out there on this?
Thanks,
Thanks,
Please, please, please use the primer the data lists.
In some rounds the pressure can be almost 2 - 3 times with a magnum primer vs a standard.
There is no need to use a magnum primer in a case like the 6.5 Creedmoor. Magnum primers are only needed when large volumes of powder need to be ignited like in large belted magnum cases.
Just because the case doesn't accommodate a large primer doesn't make it less efficient.
I was talking about rifle cases, not handgun loading. In rifle loading it is the large volumes of powder that mostly dictates the use of a magnum primer."...Magnum primers are only needed when large volumes of powder..." Nope. It's the powder itself, not how much that matters. Nothing to do with how a case headspaces either. Nor does the size of the primer matter. To magnum or not to magnum depends entirely on the powder used. Mind you, the help in extreme cold weather shooting too.
Using a magnum primer might increase pressures, but there are no lab tests that I've ever seen.