9/mm revo issues?

halfmoonclip · Dec 15, 2022

Saw an article on The Tactical Professor about potential problems with 9mms in revolver.
In particular, it drew attention to the taper in 9mm cases, that allowed/encouraged the case to 'self extract' to some degree, perhaps tying up the gun by friction with the recoil shield.
Can't say I've had the issue personally, in a variety of 9mm wheelies, including a 940, a 986 and a Chiappa. Now I will say that these guns were fired almost exclusively with my reloads, which means the casings ended up as cylinder section, at least down to the base.
Since I'm short on primers, I'll be shooting factory at least for awhile.
Soooo, anyone else have issues with 9s in revos?
Not really losing sleep over this, but curious.
Moon

Waveski · Dec 16, 2022

Revo ?

film495 · Dec 16, 2022

never heard of it, your post is the first time I ever heard of such a thing

Tallball · Dec 16, 2022

I have two 9mm revolvers and have never had any problems.

243winxb · Dec 16, 2022

More a problem with bottle neck cartridges, in revolvers. But possible even with 38 specials, if brass is stuck back against the recoil shield. Had it happen, dirty cylinders, maximum loads.

Don't 9s have moon clips? The Ruger BH convertible 9, no clips.

casings ended up as cylinder section, at least down to the base.

The RCBS 9mm Luger size die has the taper built into the carbide sizer.

Jim Watson · Dec 16, 2022

I think that if you have such a problem, your only option is to change ammo. And be sure the chambers are degreased.

Smith and Wesson addressed the matter in the M547 with its trick "umbrella rib" extractor" by putting in a headspace control pin just above the firing pin. I understand its main purpose was to drive the round all the way forward in the chamber for a good firing pin hit on cartridges from all over the place with sloppy case lengths; but it would also serve to hold the case forward after ignition. Not a lot of force against chamber pressure, but maybe enough.

243winxb · Dec 16, 2022

Jim Watson said:
headspace control pin just above the firing pin.

Interesting. I learned something today. Ty Jim. https://revolverguy.com/the-smith-wesson-547-ahead-of-its-time/ Limit Pin-

KyJim · Dec 16, 2022

My 547 is shot sparingly, but I’ve never had an issue. I have shot more rounds out of my Ruger 9mm LCR—-again, no problems

halfmoonclip · Dec 17, 2022

Never had a problem, personally, in the revos cited (940/986/Chiappa), simply responding to the Tactical Professor article.
Have noticed that the firing pin bushing is slightly convex, on the Smith 986, likely for the same reason as the pin pictured.
24nxib, that pin above the firing pin, is it also struck by the hammer? Yes, I've heard of the issue with bottleneck rounds in a revo.
BTW, when doing the handgun safety class, I used to fire a primed case, when explaining how a cartridge works. More often than not, the fired, primed .38 case would tie up the revolver, and was a PITA to remove. Started using an autoloader to avoid the problem.
Moon

Vern Humphrey · Dec 17, 2022

Typically on a revolver, the primer backs out. With a full charge load, the case backs out a bit, too and reseats the primer.

KevininPa · Dec 17, 2022

I have the LCRx in 9mm. No issues.

Jim Watson · Dec 17, 2022

Vern Humphrey said:
Typically on a revolver, the primer backs out. With a full charge load, the case backs out a bit, too and reseats the primer.

Right, if you want to pop a primer as a blank, drill out the flash holes as is done for wax and plastic bullets.

Rock185 · Dec 17, 2022

I've had several 9mm revolvers. With my Ruger Blackhawk convertible, chambers had to be bone dry, or the tapered 9mm case would back out against the breech face and tie up the revolver. With my 940, +P, NATO, etc. ammunition will stick badly in the chambers. The initial 5 rounds of higher pressure ammo will function just fine, but can't count on being able to extract that first 5 to reload. All the different types of standard pressure ammo I've tried in the 940 work fine.

Both my 547s worked without issue, even with +P, +P+, NATO, etc. My Ruger SP101 also works without issue, no matter what type of 9mm ammunition is used...

cfullgraf · Dec 19, 2022

I have two S&W 986's and a Ruger SP101 chambered in 9x19.

I've never had the ammo lock up the revolver as long as the ammunition operated properly in the gun, i.e something like a primer backing out or over pressure round that caused the primer to flow around the firing pin into the firing pin channel.

I do only load the guns with moon clips and that may help prevent the setback problems.

I also have a 357/9mm convertible Blackout but have never had the 9mm cylinder installed in the gun.

halfmoonclip · Dec 19, 2022

I'm sure yinz are correct about the primed case issue in revos; as noted, fixed the problem by firing a primed 9mm casing in an autoloader.
Had the 940 to the range last evening, and it caused no problems with my 147gr reloads, nor with some 115 Blazer Brass.
Moon

gwpercle · Dec 19, 2022

Shooting 9mm in a Ruger Blackhawk 357 mag. / 9mm convertible ... the problem is I can't find enough cheap ammo to shoot like I could do in the "Good Old Day's " ... remember when you could get military surplus 9mm ammo for dirt cheap ....
Other than that ... no problems !
Gary

Hoser · Dec 19, 2022

I shoot about 10-15K of 9mm through my Smith 929s each year. And a handfull or three through my Smith 940.

I am shooting 147 and 165s in my 929 and 124s in my 940. Neither is a low pressure reload.

No issues at all. But I am using moon clips for both.

Tallball · Dec 20, 2022

In 3 hours I'll be blasting cheap 9mm bulk ammo through my Blackhawk.

Been doing it for years with zero problems.

No problems with my SP101, either.

IIRC, a problem is more likely with a smaller, lighter revolver.

PapaG · Dec 21, 2022

Waveski said:
Revo ?

Cringe. "wheelies" X2

Waveski · Dec 21, 2022

Ah , from the folks who brought you
“Shotty”.

Buckeye63 · Dec 23, 2022

243winxb said:
Interesting. I learned something today. Ty Jim. https://revolverguy.com/the-smith-wesson-547-ahead-of-its-time/ Limit Pin- View attachment 1121334

Thanks for sharing this article.. a 9mm snubbie easily bests a 38spl+P and the amount of SD 9mm designed for short barrels is plentiful… arguably nearing the effectiveness of a 357 mag out of a snubbie…

reddog81 · Dec 23, 2022

I’ve shot everything from very light reloads that don’t reseat the primers because the pressure is so low to loads that stick in the cylinder because pressure is too high. Never had that happen before.

I’m not even sure what to think about the claim. “If the case moves backward far enough they bind against the recoil shield”. Umm…. Every time the gun is fired the case is pushed back against the recoil shield with the same force that is pushing the bullet down the barrel. Every single time the case will be pushed back the same amount, which is completely against the recoil shield.

halfmoonclip · Dec 24, 2022

Reddog, your point is well taken. The article argued that the 9mm's case taper made the situation worse, which is why I ran it up the flagpole here.
My only real gripe with 9s, in a light revolver, is the surprisingly sharp recoil, from loads that are quite mild, in, say, a P365.
Never really had an issue with function, save for my resized reloads that sometimes don't want to seat.
Moon

Vern Humphrey · Dec 26, 2022

I have always felt the advantage of the 9mm in self-defense weapons was the large magazine capacity (in most 9mms). Chambering it in a revolver negates that advantage. If you want .357 performance, why not get a .357?

Shooterbob · Dec 26, 2022

I gotta ask halfmoonclip I not asking for specific location but are you from around Pittsburgh Pa?The use of yinz is a give away.

9/mm revo issues?

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