need help w/ 45 auto rim case length/cutting

[3006mv]

Does Lee make a 45 auto rim CASE HOLDER for their little trim gauge length cutter? How do you guys trim your 45 auto rim brass?

 

[steveno]

I have never trimmed a straight walled case in my life. I think you will find that out also. straight walled cases very rarely grow in length and then not enough to matter

 

[Jim Watson]

I don't trim no stinkin' .45 Auto Rim.
Nor any other straight pistol case, except for the time I trimmed a batch of mixed .357 Magnums to the same length so they would crimp the same.

 

[armedandsafe]

I shot a batch of 500 .45 AutoRim cases and reloaded each of them 7 times without trimming. I was working hard on the 8th cycle when my 1917 was stolen. I was pushing max velocity with 2400 on my loads and didn't have enough stretch to measure with a micrometer (didn't have a caliper in those days.)

Pops

 

[Paul "Fitz" Jones]

I have trimmed many cases

I have an old C-H Power Case Trimmer set up for many calibers as I like my target loads trimmed identically for accurate taper crimping in my progressive reloaders.

Also I save case mouth cracked cases till I have enough to trim all at once past their cracks and Load them up for one of my kids to shoot out in the boonies. I color code ammo for each of my family members.

I also have made many cases from larger cases and have made .30 luger cases from GI .223 rifle cases and others to many to mention from a how to book made many years ago. I had a friend with a hydraulic press who would take 45/70 brass and make many calibers from them and I made .38/40 and 44/40 from larger brass we made blanks for cowboy shootouts.

I bought a new 6mm Remington 700BDL rifle with beautiful wood when they first came out and the ammo was worth its weight in gold after the .243 was invented and little selection of 6mm ammo was made so I have hundreds of 6mm ammo made from just about every larger cases I had from 7mm, 280, 7.62, 06 etc and more and after sizing they all needed inside neck and OAL trimming.

I have a lifetime collection of tools that have given me good memories of their uses.

Look for books for sale at gun shows and at auction for old and helpful information.

 

[RON in PA]

Who trims low pressure, straight walled handgun cases? I don't.

 

[xring44]

I once did a little test, I used 6 pieces of .357 brass that I had picked up at the local range, each from a different manufactuer. These were loaded with 10.8 grains of bluedot and a 158 grain Hornady XTPs. The powder was thrown from a RCBS uni-flo powder measure.

Then I took six new pieces of R-P Brass, uniformed the primer pockets, trimed to mimimum OAL, deburred inside and outside the case mouth, ran a flash hole uniformer through the flash holes, loaded with the same load as the six mixed headstamps, weighed the charges etc.

I shot these at our club range in a very accurate S&W 686 8 3/8 " barrel with a dot sight at 25 yards. from sand bags, there was no appreciative difference, both groups made one hole, the mixed brass group measured just thousands less than 1/2" the uniformed brass just thousands OVER 1/2"
This ended my trimming of straight wall cases, in .357 and smaller, I still trim .44 magnum and .41 magnum fearing bullet set back from uneven crimps

 

[Rico567]

I haven't trimmed a pistol case in 30 years.....and I only trimmed one batch then, which was a special situation. What I shoot (.45 ACP, .40 S&W, .45 Colt, .38 & .357) splits before it ever needs trimming.