[warrior23]

Anybody try to reload this stuff,it seems to have small pistol primers.I thinks its federal clean ammo.

[Jim Watson]

Hmm, didn't know the plague had spread to 10mm.
I have done some work with Winclean NT small primer .45 ACP. They say not to reload it but it seems to be otherwise normal so I ignored their lawyer talk.

A small pistol standard primer gave substantially less velocity than a large pistol standard. Depending on the powder, a small pistol magnum primer gave about the same velocity as a large pistol standard, or more than standard but less than large, or more than either.

You just gotta test over a chronograph and I would play it safe and not use NT for top loads. If only a few have contaminated your brass supply, just trash them.

[warrior23]

Thanks,I've got prob 500 of them hate to see them get scraped,maybe I'll try the sm pistol mag primers on a few and chrony them like ya said and keep'em mild.

[grendelbane]

A small rifle primer will fit. I use small rifle primers in high pressure 357 SIG, and .38 Super loads. I am not alone in this practice.

I have also considered it in .40 S&W. The .40 Short & Weak is on the borderline of primer sizes. (Yes, I know that back in the 1930s, the .357 Magnum was produced with large pistol primer pockets!:D

Actually, 10mm cases taking small rifle primers would simplify my inventory requirements.









:D

[warrior23]

Gren,do you think small rifle primers would be better than sm pistol mag?How are the loads your using for the 357sig?

[grendelbane]

The small rifle primers work just fine in my 357 SIG loads. I have a load of Power Pistol that will push Remington 147 grain JHP's over 1400 fps.

Pressure is still reasonable. I could probably go higher, but the bullets are not designed for those velocities.

I have never tried magnum primers in the 357 SIG. My concern has been more with handling the pressure than igniting the powder. I use Power Pistol, and it is not too hard to ignite.

[warrior23]

I'm having great sucess with Blue dot/800x with mag primers pushing Remy 180GS,but I'll have to test out the sm rilfe primers.thnxs

[Jim Watson]

In another trial, I got higher velocity (9mmP) with small pistol magnum primers than with small rifle standard. I have a supply of each and little else to burn them in, so I was testing loads. Do be careful, I was getting factory equivalent velocity with a starting powder load and the hotter primers.

Just goes to show how helpful a chronograph is if you are beyond "recipe" reloading.