[Revolver Ocelot]

I recently had a thread on customizing a gp100, someone rqan the interesting idea of converting it to a 10mm, so what are the advantages/disadvantages of having a 10mm revolver?

[ArchAngelCD]

I don't see an advantage if you would change over to 10mm. On Remington's site they list their 10mm 180 gr round at 1150 fps with 529 ft/lbs of energy. Remington's 180 gr .357 Magnum round is listed at 1145 fps with 524 ft/lbs of energy. Since they are identical why spend the money on the conversion? Besides that .357 Magnum ammo is less expensive and more easily available with a greater variety. .357 Magnum ammo can be found in 105, 110, 125, 145, 158, 165, 170, 180 and 200 gr rounds. I did a quick check and only found 10mm rounds in 170 and 180 gr.

If you found a good deal on a semi-auto chambered in 10mm I wouldn't say you shouldn't buy it but to convert a perfectly good .357 Magnum to a 10mm is just not right.

[Revolver Ocelot]

I actually found more varieties of ammo for the 10mm available from te supplier I buy from, only advantage I found was a 10mm that fired a 10mm jhp round with a lead ball behind it so actually you make 2 hits with one shot but other then that I'm not sure what the persons reasoning was.

[MrAcheson]

only advantage I found was a 10mm that fired a 10mm jhp round with a lead ball behind it so actually you make 2 hits with one shotNo offense, but that sounds like a really silly load.

The real advantage is that a 10mm JHP will probably open up larger than a .357 JHP. .357/9mm JHPs typically expand to somewhere in the .55-.6 inch region. I'm betting that the larger 10mm JHP can open up a little larger and make a bigger hole. And it still has the power to adequately penetrate a human target. But that's about it. You're spending a lot of money for maybe .05 inches of additional expanded JHP diameter.

[PzGren]

I do not know if it is still available but Remington offered .38 and .357 Duoball ammo with two round 00 bullets in it.

S&W offered the 610 and took it off the market when there was little interest. Later they brought it back. A 10mm revolver can also use .40 SW, headspacing on the moon clip.

It is quite an extensive modification and the cost will reflect it. To me the price is much higher than the benefits, but YMMV if you want a very unique gun and do not mind paying for it.

[Ohen Cepel]

If you want a 10mm revolver look around and buy a Smith 610. I think it will be cheaper in the long run and much less hassle than a convesion.

[Smith & Wesson Man]

do you reload or plan on reloading? This is my take on this quesition. 10mm and 357 are somewhat close when it comes to fps, but the 10mm I think gives you an advantage is the round can be shot out of revolvers and pistols. I think Kimber, Smith, Glock, and few others were making pistols in this round. I can only think of two companies that have made pistols that can shoot 357 magnum. I have a smith 610 and they are hard to find right now. Factory 10mm is not as cheap as 357 magnum. I reload so I save some $$ shooting mine. It comes down to choice and what you want to spend. I know guys that have taken whitetails with their 10mm's and 357s. Their is a lot more choices out there for 357 magnum bullets. Get what you want, both are very good rounds and can do the job. Just my two cents:)

[EddieCoyle]

The 10mm in its original form is more powerful than a .357 Mag. The Remington load you cited is somewhat anemic. If you handload, you can load a 10mm to the lower end of .41 Magnum territory. For lighter loads, at least where I am, .40 S&W is now cheaper than .38 Special.

Unless you're into the novelty of having a Ruger 10mm, I'd agree with the other poster that recommended finding a S&W 610 (I bought one from someone on this board).

[JBP]

As much as I love the 10mm (I have 2 610's, a G29, G20, & S&W 1076) I would leave the GP100 as is. As other posters have said the benefits are not going to outweigh the costs.

[461]

With the money you'd spend you could buy a semi auto 10mm or a 610 and have a bunch of money left over along with a top of the line .357.

Now if you're one of those lucky folks who has gun funds that number that high then I say "why not", but I'm unfortunately not in that club.

[ArchAngelCD]

but I'm unfortunately not in that club.
461,
Not too many people are in that club. I don't even know where that club is!! :(

[Revolver Ocelot]

I had started the perfect gp100 thread and while discussing the possible modifications a couple people said that make it a 10mm would be a good idea, I didn't think it was worth the dough but put up the pole and so far it looks like theres already a clear winner so 10mm probably won't happen.

[razorburn]

The 10mm in its original form is more powerful than a .357 Mag. The Remington load you cited is somewhat anemic. If you handload, you can load a 10mm to the lower end of .41 Magnum territory. For lighter loads, at least where I am, .40 S&W is now cheaper than .38 Special.

No, the original mag is more powerful than the original 10, if by that you mean the 200 at 1200. You can still handload .357 mag over 2000 fps and nearly 1100 ft lbs. Getting .40sw cheaper than .38spl is the real advantage if you got that. I'd get a 610 over a conversion if you want to do that though. Or just get a 10mm autoloader.

[461]

I don't even know where that club is!!

Oh I know where it's at, they just won't let me near the place. :D

[Ohen Cepel]

I found the club once, my wife ran me out of it though:D