Magnum Primers

SW 357Mag

I have 2000 magnum primers and nothing to use them in, unless I can use them in place of regular primers. I was wondering can they be used for some light 45acp loads. Thanks

SW 357Mag

When is it appropriate to switch from standard primers to magnum primers? I can see a need when using large amounts of powder in large cases(375 h&h) but what about smaller cases (22-250)? Has any one come up with a hard and fast rule. Most reloading manuals seem a little vague.[?]

SW 357Mag

Can I safely use magnum primers instead of standard Small Pistol in 38/357 loads without changing bullet/powder combo? Great deal on them at Wally World if I can. Plinking loads so I'm not worried about accuracy too much. Want to be able to hit what I shoot at though.[:)]

PJ

You need to work up new loads when you change any component.
Pete

perry shooter

+1 on PJ if you are near MAX with standard primers you will be over max with magnum primers.

bpost

From my experience in pistol rounds going to a mag primer is about equal to .5 grain of powder. If you are shooting mild plinking loads there will be no problem.

It is when you are in the upper level of the book loads that substituting a mag for reg primer can be a problem.

If the price is right buy them all.... They are going to continue to skyrocket in price. Plinking with a cheap mag primer is better than going broke plinking with a standard primer in my book.

mbsams

If you didn't know the answer to this fundemental reloading question I strongly suggest you get a reloading manual and read it cover to cover - twice! Never take the word of strangers on the internet in matters of safety! Double check all opinions with the "books"

SW 357Mag

My manual shows charges from 3.6 - 4.0

I stay around 3.7 - 3.8 with standard primers. I believe I'll pick them up and load 3.4 gr or so and see what happens.