Any such thing as "9mm moon clips for GP100"?

Yes.

But you would have to have the cylinder machined to accept moon clips.

They wont fit without extra clearance for them.

http://www.tkcustom.com/

http://www.tenring.com/moon-clip-conversions/

rc

This is not a good idea at all. First off at the same time the cylinder is cut to accept the moon clips you would also have to run a chamber reamer in to allow the slightly tapered 9mm casings to fit. And that removed metal would prevent you using .38Spl or .357Mag ammo as the cases would bulge or rupture.

On top of this the bullet from the short 9mm would be traveling a long way from the case mouth to the transition to the chamber throat with no support at all along the way. So there's a risk of the bullet tipping and deforming as it enters the throat of the cylinder.

The guns that do shoot both come with replaceable cylinders. A GP100 does not. Of course this will be when someone brings up the old idea of the Medusa gun that shot just about everything with a .356 to .360 size bullet out there. But I'd suggest that there is more to accuracy than being able to discharge ammo and have the bullet move downrange.

Finally those convertible guns do not have the finest reputation for accuracy with the smaller 9mm bullets traveling down the compromise size of the barrel.

All of which suggests that it would be a good idea to lay down until the feeling goes away.

What about doing this for .38's? Anyone try it?

Same deal.

It works..
There are company's who will do it for you.

You will get varying reports on how well the accuracy is.

+P .38 Special SAAMI Max pressure is about 1/2 of what +P 9mm is rated at.

.38 Spl +P = 18,500 PSI.

+P 9mm = 38,500 PSI.

So you pays your money.
And you takes your chances?

What do you think?!

rc

You can have a revolver cylinder cut for clipped .38s and .357s.
The long skinny rounds in the thin clips do not load as easily as stubby .45s or even 9mms. And you have to match the clips to the brass.
I consider the guns I had thus modified to be a waste of money.

So the consensus is learn how to use a speed loader under pressure. Thanks.

So the consensus is learn how to use a speed loader under pressure. Thanks.

Click to expand...

You might actually find speedloaders to be faster than moon clips in .38/.357 guns.

A good speedloader like the Safariland Comp II will hold the round tight with no wiggle room. This makes it very easy to insert into the revolvers cylinder. With moon clips, the round will wiggle around and can be ornery and not want to go in the cylinder as easily.

You can get VERY fast with speedloaders and a nice pouch to carry them in. Another advantage vs moon clips is that you don't have to work about a bent moon clip tying up the revolver. Grant Cunningham greatly prefers speedloaders for defensive use for this reason and others. Moon clips make sense with competition guns shooting auto pistol cartridges, but for duty or defense guns in traditional revolver cartridges speedloaders are the way to go.

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DANG! YOU'RE FAST CR! ! ! ! !

I'm not that fast with my Comp II's but when it goes good it's really good.
I've only ever seen one fellow with a moonclip setup for his .357's. As mentioned they dangle around and generally were no faster to load than a good speed loader.

A lot of the speed can come from a really good aggresive tip up of the gun for running the hand ejector. All my issues during a course of fire revolve around my not turning the gun upward enough to allow the brass a clean drop away from the cylinder. Same with loading where you want to really turn the gun strongly downward to let gravity aid in seating the cartridges. Those of us without the spring driven Comp III's need all the help we can get.