[Magnum Force]

why is most of the jhp ammo for 45acp that i find in local shops the +p stuff?

i like using the standard pressure stuff, don't feel the need for +p. the only reason i have +p in my mp45c is someone gave it to me.

all my 1911's have ranger talon, standard pressure stuff.

is +p 45 more popular nowadays? any big advantage to it?

i don't think it's bad at all, it's just that i feel confident with standard pressure jhp's in 45acp already.

[Popeye]

The power of advertising at work.

[Sir Knight]

Why +P? Because the .45ACP was designed to work best out of a 5" barrel. There are a lot of 45's out there with 4", 3.5" and even 3" barrels. To get the same effectiveness from these guns, either a lower bullet weight needs to be used or higher pressure or both.

[lookingforthewayback]

How much velocity is lost between a 5 inch barrel and a 3.5 inch barrel in a 45 shooting 230 gr ammo? Is that loss enough to hamper effective penetration and expansion of the round shot from 5 - 15 yards?

[bluedlightning]

Personaly I don't beleive you need +Ps for your .45s. It was designed to throw a big slug at low velocity. I don't beleive that the loss of muzel velocity in a shorter barrel offsets the added recoil and muzel flash. :cents:

[gmcfixer]

The power of advertising at work.These are wise words folks

Dave Z

[gunfan]

This is why the 10mm Auto was invented. The 10mm can be loaded to near .41 Remington Magnum performance levels. The .45 ACP is fine when it is shooting subsonic ammunition; +P loads are okay if the pistol is set up to manage them. This is why I prefer the 10mm Auto. I wanted the larger "power envelope" the cartridge provides. It can be loaded from .40 S&W levels, to the cartridges practical upper limits.

The .45 ACP is an excellent cartridge within its design perameters. A sage gunwriter once said, "If Magnum perfromace is required, the appropriate cartridge should be chosen."

Scott

[Sir Knight]

How much velocity is lost between a 5 inch barrel and a 3.5 inch barrel in a 45 shooting 230 gr ammo? Is that loss enough to hamper effective penetration and expansion of the round shot from 5 - 15 yards?
A 230 Hydra-Shok fired from a 5" barrel has a velocity of 816 and energy of 340 compared to a velocity of 751 and energy of 288 when fired from a 3.5 inch barrel -- a decrease of 8% in velocity and a decrease of 18% in energy.

[bluedlightning]

Even with a 18% loss in energy its still better then throwing rocks or harsh words.

[Sir Knight]

You need at least 750 fps for any chance of expansion in a hollowpoint. 751 is VERY much on the boarder. All you need is a standard deviation of 5% (which isn't that high because 5-10 is the norm) and you've got a velocity of about 714. Going to a lower bullet weight or +P removes this issue.

My M&P45c has a 4" barrel and I carry 200gr Speer GoldDot just to be on the safe side.

[lookingforthewayback]

Thanks

[Magnum Force]

i've got corbon 165 grn +P sierra jhp's in my mp45c. these are pretty speedy bullets, 570ftlbs of energy from a standard length barrel.

[lead]

For the last few months, my local shop had more +P ammo in different calibers then usual. When I asked why, he said that it was about the only ammo he could get. With the ammo shortage, the regular plinking stuff just wasn't to be found, but some distributors still had the higher priced "specialty" stuff in the warehouse and started pushing it so that stores would at least have something to put out.
Regular ammo is coming back. You just have to look around for it.

[gmcfixer]

i've got corbon 165 grn +P sierra jhp's in my mp45c. these are pretty speedy bullets, 570ftlbs of energy from a standard length barrel.

Something to keep in mind is that Corbon pushes the envolpe, their +p is a bunch hotter than everyone elses +p.

Dave Z

[Magnum Force]

Something to keep in mind is that Corbon pushes the envolpe, their +p is a bunch hotter than everyone elses +p.

Dave Z

yeah i know lol

i only have 1 box of it that someone gave me. i fired 2 mag fulls to see what would happen as far as functionality, and it worked ok-no probs. but because it is so hot, i won't be buying any more of it (plus the fact that's it's too expensive lol) :)

[XD45]

The power of advertising at work.

I use Federal EFMJ 230gn +p in my Springfield XD, and my Norinco 1911 for carry duty. I don't mind the recoil, and more energy delivered to the target is always a good thing. I believe that if you are using a bullet which is designed to expand you should at least drive it fast enough for it to do so. Otherwise just use flat points or plain old ball.