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The best news to come along in some time is the availability of .45 Auto Rim brass from at least one manufacturer: Starline. With these high quality cartridge cases, the .45 Auto Rim fan has a reliable resource and may reasonably stretch his .45 AR to accommodate heavy loads.

The Star Bullets 185-gr. SWC HP performed beyond expectation. This is excellent expansion at low velocity.

Left to right, the 185-gr. Star bullet with experiments in seating depth, the 200-gr. Speer Gold Dot in .45 AR brass, the 240-gr. Sierra JHP and the 230-gr. XTP, all good loadings for specific uses.

The Sierra bullet at left has been deep seated; no need to worry about feed reliability in the revolver. But be certain to reduce powder charge when experimenting with deeper seating of heavy bullets.

At maximum velocities, the Speer Gold Dot, left, gave good results and the Sierra 240-gr. JHP shows uneven expansion. The 230-gr. weights are best suited to standard .45 ACP velocity.

.45 AUTO RIM LOAD DATA

Note: All loads loaded on RCBS equipment, all primers standard Winchester Large Pistol primers. All brass is Starline. All handloads listed were fired for testing in the Smith & Wesson 1955 target revolver.