.40 S&W 135 gr. Nosler JHP

[mraymiller]

I'm loading .40 S&W, 135 gr. Nosler JHP... is it possible to use a magnum small pistol primer in lieu of the standard small pistol? If so, how much of a powder reduction should I apply to the load? I'm currently loading AA-7 @ 10.9 grains.

 

[dwhite]

I run magnum primers in my 40 S&W loads with AA-7 and 180 grain lead bullets. I've had no problems.

I use the same powder and primers in my 357 Mag loads without issue.

All the Best,
Doug White

 

[loadedround]

According to my current Nosler Manual, the combination you are using is Nosler's recommended starting load. I can not see any problems substituting magnum primers for standard ones. I don't think you will gain much by doing so, but hopefully you are not shooting them in a Glock with a unsupported case head. So give it a try while watching for the various pressure signs.