327 Vs 357 - Cartridge Federal has partnered with Sturm, Ruger & Company to introduce an all-new .32 caliber cartridge known as the .327 Federal Magnum. It's essentially a lengthened version of the .32 H&R Magnum cartridge that's 1,200 inches long, but it's loaded with a significant pressure of 45,000 psi. Despite the name, it uses the same .312-inch bullets as other .32 caliber cartridges, including the .32 S&W Long, .32 H&R Magnum, and .32 WCF (aka .32-20).
The .327 Federal Magnum offers considerable performance and is advertised to launch a 100-grain bullet at 1,400 fps and a Speer 115-grain Gold Dot at 1,300 fps; Federal's 85-grain Hydra-Shok 1 "Recoil Low" load gets 330 fps. This velocity is advertised at 31 out of the Ruger SP101 revolver
327 Vs 357
16 inch barrel. FYI, this is actual velocity, as the test revolver used here is faster than the factory claims.
Review] Ruger Sp101: The Tank Like Snubby
The Ruger SP101 is a small-frame, double-action revolver and fires six rounds when chambered in .327 Magnum Federal, rather than five when the same gun is chambered in .38 Special or .357 Magnum. It's a thick and incredibly durable gun that tips the scales at 28 ounces. It's clear that the folks at Federal and Ruger see this gun and cartridge as having potential in the personal defense and law enforcement market. I would prefer to offer it in a medium frame (.357 Magnum 50th Anniversary pattern) Blackhawk or perhaps a Smith & Wesson K-Frame which would make an excellent field outfit for small to medium game hunting. With 6- and 7½-inch barrels, velocities will easily exceed 1500 fps. (At the time of this writing, there are rumors that such a weapon may be available in the not-too-distant future.)
.327 Federal Magnum, RCBS .32 S&W Long/.32 H&R Magnum carbide threads were used for loading, which performed flawlessly.
One concern expressed with handloading the .327 is jacketed bullets that reach 45,000 psi for that cartridge. For example, some bullets may not have a thick enough jacket, or an alloy bullet core, which can lead to poor accuracy, jacket or core separation, uneven pressure, and premature forced wear. However, none of the loads in the attached tables indicate any problems with the jacketed bullets used here. (I fired some bullets faster than listed and there were some signs that things weren't right. So it's recommended that powder loads be limited to what's listed. )
There were several powders that worked well in .327 Magnum Federal, giving respectable velocities. Bars marked with an asterisk (*) gave outstanding performance in terms of accuracy for a given shot, and in some cases the accuracy of the two powders was more or less the same, explaining why more than one powder was sometimes highlighted. For example, Hornady XTP-HP 85-grain, 12.5-grain Arms Accurate No. accuracy, so both are marked with an asterisk. Still, there were a few loads that produced excellent overall results, even if they weren't specified, indicating that it's easy to develop a quality load for this small cartridge.
Handloading The .327 Federal Magnum
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