Help with jhp dia concerns please?

[srvgtrfan]

OK, so I was looking to reload some 9mm JHP, however the diameter is listed as .356, and I can only find data on .355 dia for jacketed. non jacketed, or plated shows .356 from what I have read. My question is can JHP, which is .356, be loaded much like .355 dia? Or how much does it even matter? Loading is for an FNP-9. Any help would be appreciated since I have never loaded JHP before.

Thanks.

[Win231]

As long as you're not loading max, one thousandth of an inch won't matter. I've found more than that much variation in a box of bullets.

[srvgtrfan]

Perfect! Thank you very much for the response. I appreciate it.

[pacrat]

GTG, Load em, Choot em.

[Cowboy T]

Actually, I use 0.3575" (as measured by a micrometer) cast boolits in our shop's rental 9mm Beretta and Ruger SR-9. They chamber great and fire beautifully. Granted that the copper jacket provides a bit more friction, but you should be just fine with 0.356" bullets.

[srvgtrfan]

Awesome! Was going nuts trying to find info on the difference and what kind of impact it would have. Friction and over pressure issues were definitely my concern so I thank you all for the quick responses.

[noylj]

>OK, so I was looking to reload some 9mm JHP, however the diameter is listed as .356, and I can only find data on .355 dia for jacketed. non jacketed, or plated shows .356 from what I have read. My question is can JHP, which is .356, be loaded much like .355 dia? Or how much does it even matter? Loading is for an FNP-9. Any help would be appreciated since I have never loaded JHP before.

Hornady has included 0.355, 0.356, and 0.357" jacketed bullets for .38 Super all with the exact same MAX loads.
I have never found any of my guns to be sensitive to a couple thousandths of an inch; however, I ALWAYS start loading EVERY new bullet back at the starting load.
I find that 0.356-0.357" jacketed bullets are more accurate in MY 9x19s then 0.355" bullets. Likewise, 0.357-0.358" cast bullets are more accurate then 0.356" cast bullets.
So, simply starting at the starting load will take care of any concerns.

[srvgtrfan]

Thanks much for the information.

[bigchinner]

I have definitely found .001 differences in once box of bulletheads. It's no biggy. As long as you seat them well, they sit in the chamber or case gauge, they are good to go. Have fun, be safe and stay clear of the muzzle.