+P and +P+ ammo ammunition

LEXRated

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Hello all, after doing some digging and wondering and pondering, I thought I would whip out my trusty CGN search page and look for some posts on +P ammo (talk about +P+ later perhaps).

Low and behold nothing.

Maybe I didn't do the several searches right, but at the very least it is not mentioned in any Thread title for the past 3 years. Anyways, strange right?

So for the record, I am not an expert, just happened to come accros the terms here and there. Wanted to edumactae my self. Nothing really on CGN. (maybe my thread can be a sticky :)) - that's a double chin smiley, I was starting to get one a ways back, to much typing in my regular job). All better now, shooting sports, I've lost some weight, partially related to me feeding my gun and not my mouth.

So as it turns out this +P thing is in fact, a thing. I will leave the evolution of this thread, it's title, and of course some of it's content to the experts, but here is some things I would like to see this become.

1. Listing of firearms that positively are sold and documented as to support or not support these peculiar loads. (and the opposite but in more detail... item 2)
2. Examples of known issues that are based in science and or personal experience (not interested in a myriad of youtube links but maybe thats the best way at some point)
3. Evidence of local loaders/experts understanding the issues and document their findings or results in some way, educating others
4. other things that come up related

Depending on how awesome this thread becomes, I may choose to do some clever formatting or create separate links to public websites to track and log the data gathered. (I could create a spreadsheet or charts that will hypnotize you).
Of course, maybe there is something wrong with this thread and it has to come down, please let me know, but my thoughts are pure and lawful to my knowledge so far. I would hate for anyone to get hurt, this may help avoid accidents or perhaps even save some money somewhere.

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So I shall start the list...
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I know from an earlier call today that all Springfield 1911 5" models or higher and all XD series (XD, XDM, XD Mod2, XD-S) support the +P loads as long as they do not exceed their caliber maximum bullet grain weight. example 230gr for 45ACP, so a 231gr+P is not supported.
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That above sentence is really important to note... this stuff isn't just about one or two variables it seems. Depending on what others report, we will try to work out a means to display the results in a meaningful way.
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Here is a couple links to useful knowledge on the subject:
https://en.wikipedia.org/wiki/Overpressure_ammunition
http://www.thetruthaboutguns.com/2013/07/foghorn/ask-foghorn-what-does-p-and-p-mean/
http://www.taurususa.com/ammunition-guide.cfm
http://www.gundigest.com/ammunition...ticles-advice/understanding-plus-p-ammunition


***Added New links***

http://www.saami.org/
http://www.saami.org/PubResources/infoSpecs.cfm

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I was also told explicitly by Springfield Armory USA Customer Service in a very authoritative confident way about the above after they warned about two things-
1. they do not have this support listed in print officially (I asked) and probably won't for legal or other reasons, and
2. that +P+ is NOT the same as +P and the former +P+ should not be used in their firearms.

Anyone else know of some firearms they own if they do or do not support this type of ammo and their source for the information? I still don't know what to make of anyone making a claim, alebit perhaps even tested, that one works with X gun, just cause they tried and nothing bad happened once, or more times. I do not support simply doing that from my level of experience and think it a foolish act performed by those unqualified for which I am also not capable in assessing. You are all responsible for your things people, I can only hope you take the utmost care at all times and seek professional service for anything outside of your abilities. Stay Safe, that is what this thread is about. Having fun cannot be accomplished with this fundamental requirement.

I also realize there may be other forms of over pressure ammunition loads out there, let's try to keep this thread for now about gun support of these two types of loads, primarily the +P variation since +P+ is generally not a real standard but the former is a standard.

Also, if anyone has any contradicting information and preferably evidence to mine or others posts of their claim, I am wondering how to deal with that, but we shall see what happens with the posts... if anyone other than myself starts adding to this.

!! !! ! ................... !! !! !
 
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Sort of on your line of thinking, as it does list +P ammo in it, is the Boberg Arms compatible ammunition lists:

http://community.bobergarms.com/forum/topics/consolidated-list-of-boberg-compatible-45-ammunition
http://community.bobergarms.com/forum/topics/boberg-compatible-ammunition

Although they say the S&B 124gr 9mm has hard primers I use it exclusively with zero issues with a 6lb trigger.

Chiappa manuals are here:
http://www.chiappafirearms.com/downloads/manuals
I asked what "pressure cannot be higher than the one stated by S.A.A.M.l. or C.I.P." meant in their manual regarding the Rhino. The official reply was (paraphrasing) "in a .357 Magnum caliber firearm that can also fire .38 Special ammunition, the firearm is NOT rated for higher than 35,000 PSI as loaded as .357 Magnum or .38 Special, including any form of .38 Special +P or +P+, since the barrel caliber is listed as .357 Magnum."
In other words if using 38 Special +P or +P+ it still can't exceed 35,000 PSI. I have the email archived somewhere...
 
I never saved the link, but I'm sure it can be found, but there was an email from Glock circulating over several forums where a Glock technician states that +P ammo is okay in all Glock pistols but it will cause increased wear on some parts. Warranty repair for damage caused by this is assessed on a case-by-case basis.

My Alfa Project manual states that .38 Special +P is not safe to use in their revolvers chambered for .38 Special. I would guess this is because they use an alloy frame for their .38's but a steel frame for their .357's. No mention if they officially approve it for use in their .357 mag revolvers or not.
 
One more type of item I think can be listed in here. Any special ammo types that cannot be or should not be +P or +P+, ie, "i have it on good knowledge (better than that of course) that you should never use +P Hollow Points on 45ACP. The extra energy mashes the projectile in barrels less than 5" long."

-that was just a fictitious example of other things we can discuss related to the ammo it self.

Thanks for the information so far folks. I've been thinking about how to begin arranging the information and will come up with some sort of table/spreadsheet I believe soon.
 
I buy +P in some calibers. I only use it in newer guns (made after 1960) that have steel frames.

One use of this ammo is to Chrony it and use it as a speed limit or reference for handloads of the same weight bullet.
 
Any newer pistol of decent quality will shoot +P ammo no problem.
Most police forces (if not all) have +P ammo. Glocks, Sigs, S&Ws, Walther's and whatever else they have issue will support it.
 
If you really wanted to be on the safe side I would consult the owners manual for that particular firearm. Most are available from the manufacturers website. Many of my firearms manuals stated to use SAAIM approved ammunition. Below is a section from my Taurus 1911 manual, and has some interesting info, which I wasn't aware of.

WARNING concerning ammunition marked “+P” and “+P+”. Recently there have been many developments by ammunition manufacturers and reloaders, not all of them good. It seems some ammunition manufacturers and reloaders are in a horsepower race to see who can develop the most case pressure and muzzle velocity with little regard for practicality or safety. Some of these loads exceed common sense and can virtually tear metal apart. TaurusFirearms rated for “+P” ammunition are rated for Sporting Arms and Ammunition Manufacturers Institute (SAAMI) compliant “+P” ammunition. SAAMI does not recognize any “+P+”ammunition at all. It is DANGEROUS to fire “+P+”ammunition in any Taurus firearm and if you do so you may be seriously injured or killed.In addition, it seems some ammunition marked “+P”is not SAAMI compliant either.There are only four calibers that can carry a “+P” rating from SAAMI. They are 38 Special +P, 9mm Luger +P, 38 Super Automatic and 45 Automatic +P. There are no other SAAMI approved“+P” loads. Any ammunition in any other caliber marked “+P” is not SAAMI compliant, maybe dangerous and should not be used.

DANGER for “+P+”Never use “Plus -P -Plus” (+P+) rated ammunition in any Taurus firearm.The SportingArms and Ammunition Manufacturers Institute (SAAMI) does not recognize such ratings andsuch ammunition can be very dangerous. Firing such ammunition can cause catastrophic failure in firearms resulting in serious bodily injury or death.WARNING for “+P”Only fire SAAMI rated Plus P (“+P”) ammunition in Taurus Models designated by Taurus for +P use as below. Firing +P ammunition in other Taurus products may be dangerous and can result in serious bodily injury or death.Model 85 small frame revolver in 38 Special.Model 850 small frame revolver in 38 Special.Model 851 small frame revolver in 38 Special.Model 85 Polymer small frame revolver in 38 Special.Model 82 medium frame revolver in 38 Special. Model 817 medium frame revolver in 38 Special. All firearms chambered in 38 Super Automatic.All firearms chambered in 45 Automatic.(ACP)All firearms chambered in 9mm Luger.
 
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Some of these loads exceed common sense and can virtually tear metal apart.TaurusFirearms rated for “+P” ammunition are rated for Sporting Arms and AmmunitionManufacturers Institute (SAAMI) compliant “+P” ammunition. SAAMI does not recognizeany “+P+”ammunition at all.

For those who didn't read all of that, there is no such thing as SAAMI specifications for +P+ ammo, so there is no guidelines for maximum pressure or anything like that, so you have no idea how much pressure that round might be producing. I know I'll be staying away!
 
Thanks for the Taurus book write up. I have seen a couple variations of that but it is good to see it summarized that there are only 4x SAAMI approved versions... noted. I am not interested in shooting much else than those but good to know it's not 5 or 6 or 8(etc) calibers for other purposes. +P+ stuff is indeed a whole nuther thing. I plan to reload so I like where this topic is going... safety knowledge.
 
Cool but silly thread.

Sammi specs are for manufacturers to cope with the masses. If you are an average guy, stick with the plan.


If you are cleaver, or OCD about detail amd accept the risks of your actions, the ++++p is possible under very select circumstances. Know the gun, know the components, know you own tolerances.

Tell Elmer Keith about Sammi specs. :)

The issue is not about specs. It is about protecting idiots from themselves.
 
+P ammo is ment for defensive JHP that can benefit from they extra 100/200/300 fps aiding in explosive expansion and slightly deeper penetration for heavier slugs, i.e. in .45 ACP 230 gr. JHP.


Standard 9mm 115 gr. FMJ is running at about 1180 fps

Underwood +P 9mm 115 gr. GDHP is running at 1,400 fps



Standard .45 Auto 230 gr. FMJ is running at around 850 fps

Underwood +P .45 Auto 230 gr. GDHP is running at 1,000 fps WOW ...that's Hot. (standard +P 230gr. is 950 fps)
 
Cool but silly thread.

Sammi specs are for manufacturers to cope with the masses. If you are an average guy, stick with the plan.


If you are cleaver, or OCD about detail amd accept the risks of your actions, the ++++p is possible under very select circumstances. Know the gun, know the components, know you own tolerances.

Tell Elmer Keith about Sammi specs. :)

The issue is not about specs. It is about protecting idiots from themselves.


I don't think it's silly, glad you think it's cool though. This is just an open idea thread to capture and introduce the pros and cons of this often misunderstood terminology. I am all for idiot protection, but this topic has very little to no comments on forums like CGN. Considering how many incredibly bright and talented members we have here (not being sarcastic) I would expect to see more constructive input and feedback and perhaps help educate my self on the myriad of manufacturer documentation out there, hard to find manuals, and plain old trial an error from experienced gun smiths or engineers in the industry that may frequent this forum; this being my favourite gun forum where I have been seeking expertise and learning from for years.

Speaking of SAMMI, maybe now a good time to put a link to their page on what they say about this +P stuff.

http://www.saami.org/
http://www.saami.org/PubResources/infoSpecs.cfm

I'll add these links to the opening posting as well, opted to leave it out since it's largely generic manufacturing specifications leaning towards ammunitaion makers, not firearms makers. A search for +P on their main site yields numerous hits however mostly of course related to the ammunition itself (if not all, I didn't read em all) so this thread was also trying to unite firearms manufacturers with +P or +P+ support or denial. Again, just a friendly place to store some useful information.
 
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+P ammo is ment for defensive JHP that can benefit from they extra 100/200/300 fps aiding in explosive expansion and slightly deeper penetration for heavier slugs, i.e. in .45 ACP 230 gr. JHP.


Standard 9mm 115 gr. FMJ is running at about 1180 fps

Underwood +P 9mm 115 gr. GDHP is running at 1,400 fps



Standard .45 Auto 230 gr. FMJ is running at around 850 fps

Underwood +P .45 Auto 230 gr. GDHP is running at 1,000 fps WOW ...that's Hot. (standard +P 230gr. is 950 fps)


Never heard of Underwood ammo, thanks for the link, been checking em out. Love to try some of their stuff.
 
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