Jarvis and Barsto can make me a PPQ .400 COrbon barrel for my upcoming Q45.


Ain't quite 10mm, but it's closer than most others to it..

 

^^^^^Couldn't agree more. If you want more ka-push than a 45 acp, get a 10MM. I believe 700 ft. lbs. oughta do it. More importantly, get a gun designed to shoot 10MM. I DO wish Walther would offer the PPQ M1 in 10MM.....I'd be all over it.

 

45 super is getting to 10mm levels of poke but that is still not crazy or anything. Surely without a different recoil spring it is going to hammer the hell out of the gun. Even with a much heavier spring it's hard to say as most platforms for 45 can be made to run 10mm but they have more metal since the 10mm is a smaller diameter round. And who knows if the polymer components would handle it well?

No matter what brand or caliber the factory recoil spring is always on the light side to ensure reliable cycling with light target loads so using more stout loads like defense and +P is already causing more abuse.

Your gun was designed to shoot 45ACP so shoot that. Some occasional +p isn't likely to hurt but if you want more poke than 9/40/45 then you need to get a gun designed for it. Perhaps Walther will come out with a 10mm in the future to solve your woes. If they make a paddle one, ideally in P99AS format I'll be lined up.

 

I really like the SW 99 in 45 cal.

 

My advice; if you're hell bent on using a lot of +p ammo, get an aftermarket guiderod and spring. I use(d) a DPM kit on my PPS, but since I've switched back to 124gr standard pressure, it's superfluous.

 

I found mine does not like the Federal HST +P in 230gn. it will sometimes through a loaded round out with the spent caseing.

 

We see this question a great deal. The first bottom line is what's contained in the manual. The second bottom line is that it's your pistol: Run what you like through it, knowing Walther's recommendations ahead of time.

 

Yes, you can use +p in the PPQ. Its within saami standards.
Massive amounts of +p "may" accelerate wear but for the most part accelerated wear is still a non factor since most "+p" isnt really that much hotter and are way within saami spec.

The official stance is "no" for any 45 Super for the PPQ. Thats not to say it couldnt but there is no way in heck you will ever get a official green light.

 

No +P+, Super or SMC

According to the manual as others have pointed out -they do not expressly say to NOT use +P ammo.

However in stating to NEVER use +P+ -that definitely means it is NOT rated for 45 Super or 450 SMC. Even though these cartridges say they can work in any pistol rated for +P -the Walther is not one I would say qualifies. The PPQ is not +P rated, it is just not said you cannot use it. Those are two different things. It's a borderline +P system -so I would be comfortable using ammo rated at +P for defensive carry and an occasional function check as has been pointed out above -but the pressures of 45 Super and 450 SMC are above even what +p+ would normally be at so I would say that is a definite no go. You also want what is known as a fully supported chamber for those rounds which I do not believe the Walther PPQ has.

 

Page 10 of my manual states that +P ammunition may cause more wear and require frequent service, but it does not say it should not be used.

On the other hand, they emphatically state that +P+ "must not be used in Walther firearms".

Personally, I may run a few magazines of my preferred +P carry ammo for reliability testing, but it's way too expensive to use it as a regular practice round.

 

Page 10 of my manual states that +P ammunition may cause more wear and require frequent service...

"...cause more wear and require frequent service" is the manual writer's euphemism for "battering and sudden unexpected breakage". The barrel (which was all that the OP asked about) is not going to explode, but increasing slide velocity exponentially magnifies the stresses that all the parts were designed to absorb.

M

 

For +P rounds, check the manual, but I'd be surprised if any modern pistol couldn't handle a steady diet of +P ammo.

For 45 super, I'd think that the safe bet would be to go with a solid "no" until I was proven wrong. Even then, the pistol was not designed to shoot ammunition with this much energy, so reliability and durability would more than likely drop trying to use this ammo through the pistol.

If I felt that .45 +P wasn't enough, and I felt that .45 ++P++P++ rounds were necessary to get the desired results, I'd probably just lean towards choosing a different caliber and a different pistol.