RE: Caliber question?
There is a cartridge called the .45 AR which stands for auto rimmed. Do you think itshould havebeenan R and not a P. Here is someinfofrom anarticle I found.
1. Back in the '50s, many of us learned to enjoy shooting .45 caliber revolvers. These guns, from the then-modern Model 1955 to the old standby Model 1917, taught us two things. First, that the .45 ACP cartridge could perform well in a sixgun, and second, that we hated loading those auto cartridges into half-moon clips.
That dislike for revolver clips was pretty universal, which is why the Peters Cartridge Co. (now Remington) introduced the .45 Automatic Rimmed. The most remarkable feature of the cartridge was the very thick rim, which was required to fill the larger space between cylinder and breech face. This is much larger in .45 ACP revolvers than in normal rimmed cartridges, because of the relationship of the rim to the clip.
Back in those days, you could only get brass by shooting factory ammo. Today, you can't get factory ammo, but brass is plentiful. It is made by Remington and available from companies, such as Midway USA, that sell bulk brass. So the .45 Auto Rim is almost exclusively the handloader's province.
Half a century ago, there was but one factory load: a 230 gr. Lead Round Nose at a velocity of about 800 fps. (For a short time, there was also a load using a 230 gr. FMJ at about the same speed.)
The Auto Rim can be loaded using standard .45 ACP dies, although you will need a different shell holder. Any bullet that can be used in the .45 ACP can be used in the Auto Rim, but there really is no need to use jacketed bullets here. There aren't very many people who carry .45 revolvers for defense these days, but if someone does, they can surely handload .45 Auto Rim ammo to their heart's delight for practice purposes, then load a few clips of .45 ACP ammo for defensive purposes.
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