I have a new built 22 CM using lapua brass 80.5 Berger bullets hodgdon 4350 powder . Defiance action Krieger barrel. .255 neck . Well getting to the question has anyone run as high as 43 grains of the H 4350 in their rifles .
22 creedmoor
- Thread starter wildturkey2
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I haven't used that combo, so no help here.... but you can spend some time reading in this thread and probably find your answer.
www.snipershide.com
I would also look at some data provided by Peterson Brass... 43 gr of H4350 sounds like it might be on the hot side. They list pressure data for an 80 gr VLD and 40.5 gr H4350 @ 77k psi. Obviously work up and use at your discretion.
22 creedmoor
I know several folks including myself have been playing with the 22 creedmoor for a while now. Please keep this thread to actual reloading information, and if you can please post some round count, barrel life numbers are all over the place. Here is a brief summary of the cartridge. You need to...
www.snipershide.com
I would also look at some data provided by Peterson Brass... 43 gr of H4350 sounds like it might be on the hot side. They list pressure data for an 80 gr VLD and 40.5 gr H4350 @ 77k psi. Obviously work up and use at your discretion.
Ok thanks good infoI haven't used that combo, so no help here.... but you can spend some time reading in this thread and probably find your answer.
22 creedmoor
I know several folks including myself have been playing with the 22 creedmoor for a while now. Please keep this thread to actual reloading information, and if you can please post some round count, barrel life numbers are all over the place. Here is a brief summary of the cartridge. You need to...
I would also look at some data provided by Peterson Brass... 43 gr of H4350 sounds like it might be on the hot side. They list pressure data for an 80 gr VLD and 40.5 gr H4350 @ 77k psi. Obviously work up and use at your discretion.
I was using 43 grains of rl26 as a max load, that’s too much for h4350 which is an appreciably faster powder.
Granted, brass type/volume will be a large influence, I’d expect Peterson to have a lower limit than alpha for example just because Peterson usually seems to have a thicker case head which eats up internal space.
36-38 would be a safer starting point. Work your way up looking for heavy bolt lift to know when to stop.
Granted, brass type/volume will be a large influence, I’d expect Peterson to have a lower limit than alpha for example just because Peterson usually seems to have a thicker case head which eats up internal space.
36-38 would be a safer starting point. Work your way up looking for heavy bolt lift to know when to stop.
You may well find that you can go higher to like many. I’d hate for you to lock the bolt up on the first overpressure shot and need to hammer it open. Easier to do some crude half grain increments and figure out where your rifle actually stands in the spectrum up front.
Which is what I’m going through with my 6creed right now. Everyone is using 39-42 with a 107 bullet on the internet but 38 grains where I started is already getting me 3060 fps and heavy bolt lift.
