9 mm maximum size?

[RBruce]

I have some 125gr bullets that measure .356 on two different calipers. Can these be used in a 9mm auto pistol? They appear to be Hornady FP XTP, although they are not in the original container. --TIA

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[browningautorifle]

.356 might be a bit tight for 9mm...9x19, right? That is they might not chamber quite right. They might be tight in the mouth and commencement. I wonder if they started life intended for 38 Super?

[vintage hunter]

The correct bullet dia. for the 9x19 is .355''-.356'' so as long as the C.O.L. is within spec they should work fine.

[browningautorifle]

I might be tempted to try it too. I think I'd see if they chamber by hand and then mass load.

[Bruce McAskill]

Speer used to make a 125 gr SP with a diameter of .356 so your OK with it.