Fed Small Pistol / Fed Magnum Small Pistol

[Robert King]

I am loading 40 for major from my glock. Using titegroup and 180gr xtreme plated bullets. I normally use fed small pistol primers, as I have a ton left over from my revolver loading days. I found a few thousand federal magnum small pistol primers under the reloading bench and was wondering if anyone loaded with these and if I need to back off my powder charge.

[yoshidaex]

The spm primers will increase your fps slightly.

Maybe 50-100 fps. You can lower your charge weight by a tenth or two.

But I would be more concerned about those plated bullets you'll be using.

I never was able to get an acceptable group using plated by YMMV.

[G-ManBart]

No need to alter the charge. I've loaded both FSP and FSPM and the difference is well under 20fps in my guns (usually between 10 and 15fps).

[pjb45]

My experience is the same as GMan. I have not seen a 50fps increase much less a 100fps.

[EkuJustice]

is there any advantage to using the magnum primers?

[9mmalpha]

is there any advantage to using the magnum primers?

yes ... most of the time its available hehehe / Actually I think magnum primer is louder , that is just my observation , but of course i cant confirm it I may had been bias if i knew im using magnum primer.

[yoshidaex]

Oops. My bad. I was referencing my 9 major loads. The largest increase I've had is 70 fps using spm primers.

[TonyT]

everal years ago I made the mistaake of not loolking carefully before removing primers from the stores shelf and mistakenly purchased the SP magnum variety. I did not realize it untilI had used ca 500 in some mild 40 S&W loads ( American Slect, 180 gr. Berry's at ca 800 fps). When I chronographed those loads they produced ca 20fps more average velocity than those primed with standard primers.

[Blurryvisions]

you shouldnt see much of a difference, maybe 35-70 fps... use em up!