+P+ in CM9

[Sloman]

Picked up a box of Speer Gold Dot 115gr. +P+ hollow points. Will they hurt a CM9? Anyone with any experience in this?

[Scarywoody]

According to the reading material supplied with the pistol they are rated to +P. I'm sure the +P+ would be okay for that box quantity but it will hurt the pistol if shot all the time.


standard-pressure 9mm=37,400psia
9mm+p= 38,500psia
9mm+P+=40,000 ???
9mm NATO=42,000-43,000psia (pounds per square inch, absolute)
9mm"proof loads"=49,800

[Sloman]

thank you Scarwoody. I thought along the same lines but was not sure. Thinking of throwing a mag of them down range and if they do better in accuracy than the 124gr. Federal HST's I'm carrying, then I'll carry the +P+.

[89grand]

As light and small as that gun is, I'm not sure I'd really want to shoot +P+ in it. I run some Buffalo Bore +P+, but that's in my full size Ruger SR9.

[sharpetop]

I've shot a box or so of Federal 9BPLE, 115gr. +P+ through my CW9 with no ill effects. Honestly, I didn't notice any more recoil than any +P loads I've fired.

[Pointblank]

Why do you need to do it? If you read the online tests of modern 9mm ammo none of these +P+ rounds are top performers. They needlessly wear your pistol out faster.

[muggsy]

There is no SAAMI standard for +P+. Kahr says not to use +P+ in your Kahr pistol. If your gun does fail because of using +P+ kiss your warranty good-by.

[CPTKILLER]

Yep.

[Antarius]

There is no SAAMI standard for +P+. Kahr says not to use +P+ in your Kahr pistol. If your gun does fail because of using +P+ kiss your warranty good-by.

Thats not true. Kahr's website says Kahr pistols ARE +P rated.





Q. Which ammunition is recommended for use with Kahr firearms?

A. Kahr Arms does not endorse any particular brand of ammunition. However, not every brand of ammunition produces the same results. Please check the markings on the barrel hood of your firearm to determine the proper caliber. Kahr suggests a visit to a pistol range to test fire different brands of ammunition in the proper caliber. Kahr do not recommend steel case, reloads or un-jacketed ammunition. The Kahr pistol is rated to +P.


In the real world, there's almost no reason to run +p ammo as the short barrel doesn't really give it enough time to generate much more velocity.

[livefreeordie1]

Standard 9mm is 35,000, 9mm NATO is 36,500.

[jocko]

Thats not true. Kahr's website says Kahr pistols ARE +P rated.


[/LIST]

In the real world, there's almost no reason to run +p ammo as the short barrel doesn't really give it enough time to generate much more velocity.

they are rated for +P butnot for +P+. buy a 40 cal if u desire more ump..

[McE]

Thats not true. Kahr's website says Kahr pistols ARE +P rated.

[/LIST]

In the real world, there's almost no reason to run +p ammo as the short barrel doesn't really give it enough time to generate much more velocity.


He's talking about +P+, there's a difference to the +P you're talking about.

[Antarius]

Ohhhh. Fair enough!

[dohcacr]

The +P+ designation is not currently used by the SAAMI, but is used by some manufacturers to designate loads that exceed the +P SAAMI specification(38,500 psi). One source lists the 9 × 19 mm +P+ loading as having a pressure of 42,000 psi, an 18% increase over the standard pressure of 35,000 psi.

[skiflydive]

Keep an eye on your mag followers. I think just NATO rounds busted mine.

[jocko]

Keep an eye on your mag followers. I think just NATO rounds busted mine.

busted followers are not caused by hot rounds. ur feed ramp is hitting ur follower and causing it. Get a new follower and if it happes againn call kahr and ask for a pickup to make it right..Just sayin

[skiflydive]

busted followers are not caused by hot rounds. ur feed ramp is hitting ur follower and causing it. Get a new follower and if it happes againn call kahr and ask for a pickup to make it right..Just sayin

The feed ramp never hit/damaged the follower until I shot hotter rounds...Just sayin'...

Jay sent me new followers. I did a gorgeous rampectomy. Nary a problem since.

[b4uqzme]

busted followers are not caused by hot rounds. ur feed ramp is hitting ur follower and causing it. Get a new follower and if it happes againn call kahr and ask for a pickup to make it right..Just sayin

Don'tcha think that maybe part of the problem is caused by the frame flexing and allowing the follower to hit the ramp? Possibly why you see the issue more in polymer framed Kahrs? If so, hotter rounds could contribute to broken followers. Just wonderin'.

[muggsy]

Thats not true. Kahr's website says Kahr pistols ARE +P rated.

That's true. Kahr pistols are rated for +P ammo, but they are not rated for +P+ ammo. There is a difference between +P and +P+. Read your manual again. It not nice to contradict Muggsy. I'm keeping an eye on you, Antarius. :)

[muggsy]

they are rated for +P butnot for +P+. buy a 40 cal if u desire more ump..

Or more umph, whatever the case may be. How ya doin Jocko. :)

[jocko]

Don'tcha think that maybe part of the problem is caused by the frame flexing and allowing the follower to hit the ramp? Possibly why you see the issue more in polymer framed Kahrs? If so, hotter rounds could contribute to broken followers. Just wonderin'.

anything is possable, but IMO is is feed ramp related. If ur gonna shoot +P+ then u get what u deserve, but if the6 say it is rated for +P then it should not do it PERIOD. I think we really over rate this flexing stuff to. Just my 21 cents. Kahr previous issue with busted followe4rs, we know is related tr5o feed ramp and I don't recall an ownber saying he wa sonly shooting +P or +P+ amm. It was businting them with over the counter range fodder. Again IMO the flexinbg if it ishappening should be built in with the entire flexing of the gun, includinbg feed ramp. We are seeing much much less of these busted followers, so the ammo has not changed per say, but kahr is addressing the feed ramp thing. But again anything is possable.

More guns made today with polymer frames than not, and we seem to onlyt hear this issue with the kahrs, so evident'ly the utter makers have solved this isssue, which I have not read of happening in the utter gun makers either or at least is is so so rare......

[Antarius]

That's true. Kahr pistols are rated for +P ammo, but they are not rated for +P+ ammo. There is a difference between +P and +P+. Read your manual again. It not nice to contradict Muggsy. I'm keeping an eye on you, Antarius. :)

Hahha ya I stand corrected! I hadn't had my morning whiskey yet! Lol