I just ran out of regular smal pistol primers tonight and was wandering if i could use magnum SP primers. I am loading 38 spl. with 3.5 grs. Red dot, 158gr frn boolit( 167 gr. out of 50/50 ), out of an LCR 38 spl. Thanks, Bruce
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I just ran out of regular smal pistol primers tonight and was wandering if i could use magnum SP primers. I am loading 38 spl. with 3.5 grs. Red dot, 158gr frn boolit( 167 gr. out of 50/50 ), out of an LCR 38 spl. Thanks, Bruce
You shouldn't have much of an issue.. you might get a few more fps from the magnums but that 3.5 gr load is on the mild side so it should be just fine. I did a workup with 20 different primers and titegroup and found that there was a difference of about 30 feet/second from low to high velocity wise. This being in 9mm with a 135 gr bullet and 3.6 gr of titegroup. I tested this across 4 platforms (S&W 929, Para LDA 9mm, Ruger P94, & Glock 34).
It will work fine. You can also use SR primers so long as you haven't done any trigger work to lighten the hammer spring. With mid range loads, I've used SR, SP and SPM primers and found virtually no difference in performance. The primer shortage days and the powder shortage days really helped to teach me what what works "just as well" as in days of plenty.
Thanks you both. Been waiting for some deffinative answers. Tthe only mods to this sp 101 has been a lighter triger spring and i think a 10# hammer spring. Any way, the hammer spring is the next o e lignter than the original.
Aren't Sr primers a bit longer than sp primers? I know I used the sr for the .454, but all I've ever heard is that one is longer than the other. Would that cause the primers to be above the case and perhaps rub on the recoil shield? Just asking.......
Large rifle primers are taller than large pistol primers , but small rifle and small pistol are same size .
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Originally Posted by rsrocket1
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I have tne original springs. I will cnange the ham,er spri g back to original spring.Quote:
Originally Posted by Texas by God
During the shortage I discovered this. After that I have been stalking just magnum versions for simplicity. No problems at all with proper load workup
I agree as long as you start mild and work up. What I did when I found myself flush with small pistol mag primers is use them loading 223 ammo. Some internet research (I KNOW FOR WHAT ITS WORTH) showed the at least in the case of cci that there small pistol mag primers and there small rifle standard primers are the same primer in a different box.