The P210A looks like a really strong 9mm. Does anyone use +P or +P+ ammo in theirs?

Personally I would not shoot +P and sure as heck would not shoot +P+ out of my P210's. It may be strong enough, but why?

I’m not sure what the manual says off hand, but it is not a gun I’d ever feel the need to as it’s more of a range toy and art piece for me. I know it’s rich in service history though I’m not sure even the newer 219A is designed for the hotter loads. Still, I’d be surprised if a little +P (not +P+ it’s not worth the chance) would hurt it as it is indeed all steel. Maybe call Sig?

I just looked quickly through the little booklet manual and didn’t see any statements regarding ammo selection.
It’s a pretty robust gun, I can’t see why you wouldn’t be able to shoot some of those.

I'm sure it's factory rated for any ammo that meets SAAMI or CIP standard. And if you want to shoot a magazineful, a whole box, or a whole case of +P+ for shits and giggles, you aren't going to blow it up. But the harder you run any piece of machinery, the sooner you'll break something.

It's big hunks of steel and designed as a service pistol, albeit before the advent of plus-pressure loads. Particularly given that it was originally designed around European ammo, which is typically hotter than US spec stuff, I wouldn't hesitate to run those loads through it.

I'm waiting for the Carry version, given that I'm now retired and can carry whatever TF I want. It and the 225/225A1 will fill the bill for single stack 9mms.

From the P210 owners manual (the same guidance that appears in manuals for other current SIG pistols):

“Always use ammunition that complies with the industry performance standards established by the Sporting Arms and Ammunition Manufacturers’ Institute, Inc. (SAAMI) of the United States or ammunition manufactured to military specifications.”

9mm Luger +P and NATO spec ammunition meet the criteria specified by the company. There is no SAAMI specification for 9mm +P+ ammunition, and therefore it does not even though the designation can mean anything the ammunition manufacturer wants it to—or nothing at all. I have tested at least one “+P+” load that was hardly hotter than most standard pressure stuff.

Just as more powerful ammunition has more effect on certain targets, and that’s why we may use it, it has more effect on the gun. It isn’t higher chamber pressure per se that batters a gun and causes accelerated wear, but higher slide velocity caused by higher projectile weight and velocity.

If I had a P210 and used it only for punching holes in paper, there would be no reason to use hotter ammunition like +P or the American made loads identified as “NATO” (unless that’s all I had). If the gun were being used for defensive purposes or perhaps to more reliably knock over heavy steel targets, there would be no reason not to.

The reason I ask is I think I may make it the nightstand pistol not a range toy.

sigNULL, Yes. While I can't tell others what is OK for use in their pistols, I've used 9MM NATO, +P and equivalent handloads in a variety of SIGs since the '80s. I've carried +P+, and chronographed it in pistols, to include the 210A, revolvers and carbines. I've not been able to detect any premature wear, cracking, crumbling, deformation, bending, or breaking, to any of my SIGs or other guns in which these types of ammo have been used......YMMV

One would think that the P210A would be stout enough to withstand +P. +P+ however is rather wide open since there is no standard spec to go by when engineering a gun.

But up until their recent polymer guns, SIG has almost always warned against using a large volume of +P ammunition through their pistols. Acceptable in small amounts but steady diets are considered by them--or their loss prevention staff--to be detrimental. Even with the P320 series they still take a cautionary position. I've not seen them ever say +P+ is perfectly acceptable, even for all-steel guns like the P210A or many variants of the P226 X-series. Keep in mind that it's not just the slide, barrel and frame that are put at risk with such unregulated high-spec loads; small parts such as the extractor may be more vulnerable to breakage as a result. Certainly with many SIG pistols their use of and reliance on a considerable dose of MIM parts would cause me to hesitate in using much if any high-pressure loads, but that's me. You'll have to consider your own tolerance to risk and go with that. Keep in mind that SIG almost always throws out that "you may void your warranty" verbiage with use of high-pressure loads.

Frankly I'm not sure why a +P+ load is even needed for a home defense scenario...unless you've got a pesky intruding big critter problem or a network of thieves that regularly roll with Level III body armor. At that point I'd say what's a few extra decibels gonna do to me that a +P+ 9mm won't already do? Get an AR pistol and load it up with PROPER M855s; that should offer PLENTY of more than acceptable penetration...plus offer up a LOT more firepower than some wimpy single-stack 9mm pistol...