Going .460: Rowland Upgrades for your Glock
One of the most popular caliber swaps for large frame pistols is the relatively new .460 Rowland caliber. It offers a bit more bang for the buck but has some things to keep in mind. We look at this innovative aftermarket conversion for the Glock.
If you took a .45ACP sized round, and made it deliver performance around that of a .44 Magnum, then you have something on the order of the .460 Rowland. This round, the brainchild of Shooting Show host Johnny Ray Rowland about twenty years ago, uses a 24.3mm case and a .451-caliber bullet to generate a simply staggering 900-1000 ft.lbs of energy at the muzzle. It does this by making a 230-grain bullet, standard .45ACP fodder; go supersonic at 1300 or more feet per second. It is .0625″ longer than a .45 ACP and features a beefed up interior case wall. As such, it will not chamber in .45 ACP gun barrels.
In short, the supped-up .460 delivers three to four times the power downrange of the .45ACP, which makes it a pretty bad mama-jama. This puts in a bit hotter than 10mm Auto, and firmly in the arena of .44 Magnum loads.
Which makes for an impressive thump from your Austrian polymer..
