45 Auto Rim

[H Richard]

Getting ready to make u a batch of 45 Auto Rim, with 245 gr Powder Coated RNFP. I'm thinking 5.0 gr 231, as I look in the Lyman book with 5.5 gr a max load. 231 is listed as "Most Accurate Powder". (Why I like the Lyman book). I will be using a Taper Crimp as I don't have a seating dye with a roll crimp. It's always worked fine with 45 ACP over the past 40+ years. Has anyone made any loads up in this general vicinity?

 

[Outpost75]

Lyman's so-called "accuracy" loads are simply the ones which gave the most uniform pressure and velocity in their testing. They never shot them on paper with a practical gun.

Instead seek a good performing load which YOU can shoot well. Most of the time this will NOT be the maximum load. In my S&W 325PD I load #454424 with 4 grains of Bullseye or TiteGroup which approximate 650 fps from it's 2-3/4" barrel. Your 5 grains of 231 with a 245 RNFP should perform similarly. My loads enable controlled double-taps from a very light (21 oz.) Scadium N-frame gun with manageable recoil. Ballistics approximate the .455 Webley. "A little powda, a lotta lead, shoot'em good, they be dead."

 

[USSR]

Lyman's so-called "accuracy" loads are simply the ones which gave the most uniform pressure and velocity in their testing. They never shot them on paper with a practical gun.

Yep, and in my many years of 1,000 yard rifle shooting, I found that the loads with the lowest velocity variations were never the most accurate loads. I load a lot of .45 AR, so I bought a special .45 ACP seating die made by RCBS the provides a roll crimp. I believe MidWayUSA has it for $36.

Don

 

[Outpost75]

Yep, and in my many years of 1,000 yard rifle shooting, I found that the loads with the lowest velocity variations were never the most accurate loads. I load a lot of .45 AR, so I bought a special .45 ACP seating die made by RCBS the provides a roll crimp. I believe MidWayUSA has it for $36.

Don

Redding has a .45 AR roll crimp die. If you are lucky at gun shows or EvilBay you might find an older RCBS .455 die set which will do the job.

 

[HKSmith]

I've reloaded lots of .45 Auto Rim with bullets in the 230-255 grain range with 5.0-5.3 grains of HP38, so you should be fine. I do roll crimp using my Lee .455 Webley die.

 

[STORMINORMAN]

I would think it unlikely that a bullet that size would move much with an estimated velocity around 800fps (& 16K CUP or so?) with just a taper crimp...? I have not experienced bullets moving in my Model of 1955 with significantly higher velocities and pressures.

Your 5.0gr load of WIN 231 seems reasonable to me: personally I would load up a series from 4.8 and up in .2gr increments and see if one stands out, accuracy-wise?

Cheers!

 

[Eddie Southgate]

I load .45 AR with a .45 acp set , it will roll crimp if you know how to adjust the die. My Brazilian likes 5 grains of Red Dot with a 200 grain LSWC .

 

[Fessor]

I shoot 4 grains of 700X under a 185 grain Zero HP for a Bulleyes competition load. It's very accurate. Taper crimp with RCBS ACP dies.

 

[jculloden]

4.0 Bullseye and 185 gr. Zero SWC

 

[gwpercle]

Your load sounds like a good one .
Keep an eye on the un-fired rounds in the cylinder ... to check for bullet creeping out .
I taper crimp my loads but they just 200 gr. cast LSWC ... make sure those heavy 245 gr. bullets stay in the case and don't start walking out on you .
Good Luck , keep us posted ,
Gary

 

[Outpost75]

It is necessary to measure cylinder throats and to size bullets accordingly. My 325PD accepts a .451 zz minus pin gage, but not a .452. My 1950 Hand Ejector and M1917 accept a .455 but not a .456.

 

[biku324]

I use 245-255 grain LSWCs in 45 AR with 6.2 grains of Longshot. Powerful, accurate, pleasant to shoot.