Oh, some will disagree, I am sure. But it has been my experience over 30 years of reloading that magnum pistol primers generally offer no real advantage over standard. Of course, I have not tried both with every powder available, but I believe I have tried them both with every powder commonly used for .357 and .44 Magnum. One fellow told me that he felt he got less unburned powder left in the bore when using magnum primers with a certain powder. In that case, I found I got unburned powder with BOTH, unless I was sure to apply a very heavy crimp, in which case I got virtually no unburned powder with either. (2400, btw)Oh, okay. Not too many SUB ZERO days here in the Finger Lakes of NY which is where I would be shooting this puppy 98% of the time. So regular pistol primers seem like a good choice for my 357 Mag loads then?
Yep. Your best bet is to use the primers your load manual calls for. Common usage is magnum primers for powders like W296/H110.I'd just go with whatever your load recipe calls for, since some powders (like H110) greatly prefer a magnum primer to kick things off. If you're going to be using heavy loads of relatively slow powders, use a mag primer and crimp your bullets pretty good.
I would suggest you go with whatever type primer the reloading manual recommends. IME, .357 target loads using fast burning powders do not require a magnum primer, however that is a special case.. . . I just hope I do not need to buy a THOUSAND of each. (hahahaha).
Two things are specific to Marshall's experience that affect the primer choice. First, I'll repeat what I said in my last post: AFAIK, the squib-out issue with H110/296 is just observed in revolvers and is due to the barrel/cylinder gap. Marshall was not using a revolver or any other chamber that bleeds a portion of the pressure off during pressure build.. . .Winchester SMALL PISTOL PRIMER with H110... And others on that thread said Small Pistol was the way to go.
I'm not trying to start a disagreement here at all. But I am getting very different advice on primer size under 110 and 296. . .
I'll bet he didn't.The bad thing is, I bought 2000 of them and I can't take them back because I got them at a gun show and that particular feller never showed up again.
And before anybody asks, the gun is still stock and CCI's, Federals and Remingtons have never failed, ever.