sp primers in a 357

[arjacobson]

Is it ok to use small pistol standard primers in 357 magnum loads? I have a large amount of standard small pistol primers and would like to load up a few 357 midrange loads

[hickstick_10]

Myself I haven't used a Magnum SPP for years in 357, without a leak or a hiccup. Not barn burners by any means, but 357 none the less.

your mileage may vary.

[arjacobson]

Thanks a bunch. Thats what I thought! Mine are not going to be max load by any means but are going to be a bit more than my 38 target loads.

[S.R.Custom]

Is it ok to use small pistol standard primers in 357 magnum loads? ...

Generally, yes. Unless you're using one of the slow, hard-to-light ball powders like 296, then magnum primers are necessary.

[Archer]

Small standard pistol is all I've been using with Unique powder, and have never had a missfire. So far so good.

[bhn22]

The powder you use dictates the type of primer needed, the caliber doesn't have anything to do with it. Check the loading data for the powder you intend using.

[GP100man]

Actually ,I feel a mag primer is`nt needed until ya reach some very cold temps !

Build some loads in the winter with MSP primers H-110/296 that are OK chronograph em , then in the summer chronograph em again .

The same load as above except with SP primers. The max fps will be closer together !

But when the temp drops ya need em !

[arjacobson]

sounds good guys. I usually have either unique-hp38/231- or bullseye to choose from as most of my loads are 45acp-380-38 special-9mm mak. Thanks for the help.