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akr
October 29, 2007, 10:18 AM
What are your opinions about using +P or +P+ in a 1911?

rdks
October 29, 2007, 10:22 AM
Well, that would depend on the 1911. There is quite a range of quality out there. What 1911 do you own?

akr
October 29, 2007, 10:29 AM
Sig GSR Revolution XO and Taurus PT1911.

ranburr
October 29, 2007, 10:38 AM
No problem. .45 is a very low pressure load any way you do it. Also, I don't think that there is any such thing as +P+ in .45.

ranburr

akr
October 29, 2007, 10:43 AM
Thanks, guys!! :)

curmudgeon1
October 29, 2007, 09:37 PM
1911's are designed around the standard .45 acp round.
Using +p or +p+ rounds will affect the reliability of the gun.

ranburr
October 30, 2007, 12:15 AM
1911's are designed around the standard .45 acp round.
Using +p or +p+ rounds will affect the reliability of the gun.

I'm guessing that either you have never tried it or you have a problem pistol. I have never had an issue in dozens of 1911s.

ranburr

curmudgeon1
October 30, 2007, 02:34 AM
ranburr;
No, I have not tried cartridges loaded to SAMI max. spec.'s (+p), nor have I tried any hand loaded over the max. (+p+). I was referring to long-term reliability from the constant pounding in the gun, and the timing of the slide action.

auto45
October 30, 2007, 07:05 AM
Generally, I'd pass on + loads in 45.

It will be harder on the gun with a lot of rounds fired, and to what benefit I'm not sure. There are plenty of loads that do well at standard velocities and pressures. But, depends on the bullet...185 or 230, etc.

One of the "advantages" of a 45 is a blend of "power" and controllability...big bullet and not too much recoil, etc, etc.

ranburr
October 30, 2007, 02:03 PM
You guys who are worried about +P loads need to actually take a look at the rounds. They are pretty anemic as far as pressures go. Any quality 1911 should handle them fine. I have a police buddy who carries .45 Super in his 1911 and he has shot it weekly for yrs without issue. The only mod he did was a heavier recoil spring.

RickB
October 30, 2007, 02:08 PM
The beauty of the 1911 and the .45 cartridge are its adequate power and docile handling. I find +P ammo does a lot to make the 1911 harder to hit with, while not really doing much for the ballistics. I don't even like the standard-pressure .45 loads that chrono at the high end of normal. When I discovered Hydra-Shoks running at 900fps, I changed to Winchester SXTs; they chrono at 850, are easier to shoot, and don't give up anything in performance. 230 @ 850, with the proper bullet design, is just right.

Cowbiker
October 30, 2007, 07:48 PM
Both are current pieces, contact your manufacturer and/or consult your manual.

1911 variants have been around in IPSC forever shooting Major power factor. I've not looked to see what the hotter loads do, but I can NOT imagine a forged/billet frame/slide matched to a bull barrel with the right recoil spring having problems shooting any 'safe' load provided it was built up to (approached in a sensible manner).

As for production guns, there's room for variation in construction, materials and manufacturing techniques. A stove bolt metal cast clone with a marginal service barrel for instance is not the same thing as a scratch built billet caspian frame and slide with a ramped barsto bull barrel.

RickB
October 30, 2007, 09:32 PM
"Major" power factor is actually a down-load, in .45 ACP. A 200gr bullet at 830fps is making major. That's 166 power factor. .45 Super would be a [email protected], or a bit more; 240 power factor.