10mm vs 460 Rowland – What’s The Difference?

Im currently watching a Kentucky Ballistics YouTube vid on the 460R. I’ve always liked the thought of having one in a full power, reliable, durable and accurate double stack pistol that was manageable. Im really impressed with the ballistics you shared. I currently have an XD10M 5.25 and recoil is about what my preferred limit is. Defence rounds are Underwood 140gr Penetrators and 220 swc. So i could see a comp being a benefit. Anyway, i like the article and just wanted to comment. Thnx.

10mm weight runs from 60gr-240gr the 240gr can rarely be found but you can roll/press your own, Hornaday makes the components, also some boutique ammunition and hand loaded 180gr 10mm bullets can be pushed in excess of 1500fps, and 155gr at 1700fps out of a 6″ barrel that puts it right on par with the 185gr at 1524fps from the .460 Rowland, the original 10mm psi was set around 44,500 and max pressure I believe 53,000, the 10mm shines best in a 4.5″-9″ barrel on the Glock platform, the 9″ gets you full velocity allowing majority of the powder to burn🔥but you should go with a 24lb recoil spring to help keep the breach locked longer for full pressure and case support during that pressure spike until the chamber pressure drops safely, I also hear that there’s a few spring companies working on developing 26lb-28lb Glock recoil springs, that would great for both the Glock20 and Glock21 platforms for calibers 10mm Auto, 9X25 Dillon, .45 super, .450 SMC, .460 Rowland and .50 G.I. loaded at their original true potentials, I don’t think .460 is that much better than 10mm performance wise especially if the 10mm is truly loaded to it’s true full power potential, you will truly be in low to mid .41 magnum territory, I think the Rowland really stands out over 220gr for 10mm which can be pushed around 1250fps-1300fps+ out of a “6 barrel especially with hand loads, the 230gr .460 Rowland is rated at 1300fps-1400fps that’s basically in the very same ballpark but the 10mm will penetrate deeper.

Good to see others have figured out the practical value of both the 10mm and .460 Rowland! I have both and concur with the author’s findings. The Glock 20 is about the best all-around package for the 10mm. It’s not at all heavy, holds a solid 16 rounds of 700fpe+ shots. There 26 round aftermarket mags that really amp up the number of shots and total throw-weight for those so inclined. Everybody and his sister is making 10mm these days, though most of it is pure junk with kinetic energies below 600fpe because it’s all being loaded for “self defense” rather than bear defense. This leaves Underwood and Buffalo Bore as the only worthy loaders of field-power ammunition, or those who roll their own which isn’t at all hard to do. Despite the ridiculous trend toward super-heavy slugs that roll out the barrel, I prefer either a 180 grain FMJ-TC loaded to 1,300+fps, or a 200 grain hard case loaded to the same. Lead bullets have less bore resistance than jacketed and should easily go faster for any given chamber pressure.
Naturally, with Glock one can install a 6″ barrel and bump energy up by as much as 100fpe depending on bullet weight and powder type and charge. The 10mm can also be fitted with a threaded barrel plus muzzle brake to delay slide opening just the same as the .460 Rowland.
Having said all that, my favorite is my 1911 .460R conversion. With the V2 recoil management system it uses a 15# action spring – the conversion is virtually invisible other than the muzzle brake on the nose! The gun is easy to cycle – to chamber and clear and shoots softer than with the former Tougher Buffer 20/40# flat-wire coil action spring!
Factory to Underwood ammo is a pure joy to shoot – not cheap, but fun. Unlike shooting .44 magnum from a revolver that kicks so hard you wonder if you’ve sustained damage to the bones in your hand, the 1911’s recoil is so mild as to have you pausing to LOOK AT IT and make a point of paying attention to the “kick” – or lack thereof on the next shots! While it’s hard to shoot more than 10 rounds of full-power .44 magnum from a revolver, from the 1911 .460R conversion it’s EASY to blow through an entire tray of 50 and and be looking for more!