Interesting conversion to make a .38/.357 shoot 9mm with moon clips. What kind of accuracy does the 9mm give from the .38 barrel? Would be cheaper to convert a cylinder rather then buy a 9mm revolver and have a duel caliber gun. Larry
TK Custom Cyl conversion accuracy
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The two cylinders I had converted were both for J Frames and I have noticed no change in accuracy.
Of course I am not looking for long range target type shooting with either of the two I had done.
I later found a 940 at a really good price so not sure I would have had one of the cylinders done if I had a crystal ball but the other I would have regardless.
Guess it depends on the cost of the 9mm you are looking for and intended purpose. If I was looking at doing a larger revolver I would consider just buying a 986 or something along those lines. But the cost of the 986 would be more than a conversion on one you already own.
Of course I am not looking for long range target type shooting with either of the two I had done.
I later found a 940 at a really good price so not sure I would have had one of the cylinders done if I had a crystal ball but the other I would have regardless.
Guess it depends on the cost of the 9mm you are looking for and intended purpose. If I was looking at doing a larger revolver I would consider just buying a 986 or something along those lines. But the cost of the 986 would be more than a conversion on one you already own.
Hmm, I wonder if such conversion would work not only with 9mm, but other similar auto pistol cartridges like 9x21, 38 Super, etc.
From a reloading standpoint, it would be a good way to use plentiful once fired 9mm brass!
I wonder if Accurate Mold Co. makes a 200 gr lead bullet mold with a single wide lube groove? Seat it .250" or so, with most of the bullet forward of the case mouth. That would retain more case capacity and get the bullet closer to the cylinder throats.
From a reloading standpoint, it would be a good way to use plentiful once fired 9mm brass!
I wonder if Accurate Mold Co. makes a 200 gr lead bullet mold with a single wide lube groove? Seat it .250" or so, with most of the bullet forward of the case mouth. That would retain more case capacity and get the bullet closer to the cylinder throats.
Ignatz
Member
I had TK Custom moonclip and rechamber my 586 in 9mm for ICORE 6 shot Limited and some falling steel matches that limit "Stock" revolver to 6 shots.
My 160 gr 9mm loads that I use in the 929 drop about 50-60 fps when they are fired in the 586.
So the .356" coated bullet slows down but otherwise, shoots fine. For me to be safe at a bigger ICORE matches where I get Cronographed, I need to shoot the .358" bullet in a 9mm case. Then I'll safely make chrono.
I use to shoot Colt Short brass thru this 586 by blowing out the case to 9mm and then resizing the Colt Short with a 9mm die. The .358" bullet looked better in the Colt Short but I'll be moving forward with a Winchester 9mm case and .358" bullets. Some of your brass 6string!!!
My 160 gr 9mm loads that I use in the 929 drop about 50-60 fps when they are fired in the 586.
So the .356" coated bullet slows down but otherwise, shoots fine. For me to be safe at a bigger ICORE matches where I get Cronographed, I need to shoot the .358" bullet in a 9mm case. Then I'll safely make chrono.
I use to shoot Colt Short brass thru this 586 by blowing out the case to 9mm and then resizing the Colt Short with a 9mm die. The .358" bullet looked better in the Colt Short but I'll be moving forward with a Winchester 9mm case and .358" bullets. Some of your brass 6string!!!
OP
Ignatz, do you think the accuracy stayed the same as 38/357?? Seems like you have been playing with it for a while. I shoot 50’ indoors weekly. We shoot an 8 week 16 match double action revolver league yearly and I would shoot it a couple times during the course. It would be for recreational shooting also. Don’t want to put 1000.00 into another gun or do the conversion if the accuracy deteriorates after spending the money for the conversion. Larry
ArchAngelCD
Moderator, SWCA Member, Absent Comrade
I'm just curious, what can the 9mm do in a revolve that the .357 Magnum can't do. The .357 Magnum can shoot bullets from 110gr to 180gr while the 9mm can't. (or shouldn't)
I'm not saying you shouldn't but I was just wondering why. IMO a conversion would cost you considerably less than a new gun. Of course you will Wang to find a good and capable Gunsmith to do the work but I'm sure you know that.
Good luck and please let us know what you decide and the quality of the work and results if you do it.
I'm not saying you shouldn't but I was just wondering why. IMO a conversion would cost you considerably less than a new gun. Of course you will Wang to find a good and capable Gunsmith to do the work but I'm sure you know that.
Good luck and please let us know what you decide and the quality of the work and results if you do it.
Protocall_Design
Member
You can use 38 Short Colt to get a rimmed 9mm, or 38 Long Colt to get a rimmed 38 Super. Often a 38 Super will chamber in a 38 Special chamber with no alterations. You can have the chambers reamed to 38 Super. You can have the chambers reamed to 9mm (9 x 18). You can have the chambers reamed to 9 x 21, 9 x 23, etc. Then any shorter 9mm will work as well.
For accuracy in all these, use .357 jacketed or .358 lead bullets.
You can get moon clips for any and all of these calibers. Depending on the brass, moonclips for 9mm will fit all the 9s plus 38 Super and 40 S&W.
For accuracy in all these, use .357 jacketed or .358 lead bullets.
You can get moon clips for any and all of these calibers. Depending on the brass, moonclips for 9mm will fit all the 9s plus 38 Super and 40 S&W.
Ignatz
Member
The action shooting that I do in USPSA and Icore, the accuracy is fine. If I was shooting at a slow fire NRA Bullseye target, I'd shoot a .358" bullet.
Ignatz
Member
For someone who shoots action pistol matches, time is important. A moonclip full of 357 ammo would be difficult to get in fast and more importantly, they can hang up on the way out. The short 9mm cases drop in real easy and because of the slight taper of the 9mm case, the exit from the cylinder is immediate.
I'm a middle of the road competitive shooter and even in my mid-pack region, competitors can be less than one second ahead of me after a 10 stage shooting day.
My 627 and 586 never fired a 357 or 38spl case. Just Colt Short and 9mm.
I do have fun, but I want to still do my best!
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