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From Sig's site: "+P Ammo manufactured to SAAMI/CIP/NATO specs is fine to use as a defensive round or for occasional range use. Continual use of this round will make it necessary for more frequent service on the pistol. We do NOT recommend the use of any +P+ round. This may void your warranty."

Any small pistol (except the CZ 75 Compact) I've run lots of +P through wore out prematurely. Accuracy is the key when stopping any threat with a pistol. Pistols small enough to carry are just a last desperate measure to save your life so learn to shoot it well.

Andre, yes Sir. You will experience no issue with +P Ammunition. The Sig P320 has a more fully supported chamber to handle the pressure.

Andre, Why? With all the great SAMI rounds out there why spend the extra cash when you can get as good of results with standard SAMI annunition. Should have no problem with +P in this handgun. But again, why?