View Full Version : Flattened primers with 357 rifle
jkoper
02-12-2013, 09:40 PM
I recently picked up a rossi 92 in 357 magnum. The load I am using is a lee 358-158-RF cast in 16:1 lead/tin alloy JPW/LLA tumble lube sized to .358
13 grains of Ramshot Enforcer
1.575 OAL
Win magnum primer
Vel. 1600 fps
I'm getting flattened primers, is this a pressure issue or could it be a headspace problem?
Thanks
Jim
runfiverun
02-12-2013, 10:43 PM
the 357 headspaces on the rim,flattened primers aren't really a good indicater here.
now if you had flow into the firing pin hole that would be excessive.
i'd say you are running more than 30-k though
NSP64
02-12-2013, 11:06 PM
Post a pic
Might not be flattened
I think flattened is there is just a line around where the primer and case meet, flat all across except for the firing pin dent.
Blammer
02-12-2013, 11:12 PM
I'd suspect pressure.
Try less powder or try a diff powder.
1Shirt
02-13-2013, 11:19 AM
I would agree with Blammer. I have had best luck with H-110 and 2400 in my 94 Win 357.
1Shirt!
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