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45 acp

started loading 45 acp on my 650 press and i'am running to a little problems.  i'am using rcbs dies.  i have loaded about 300 rounds.  about 10% will have a bulge in them and they won't fit into the chamber of any of my 1911's.  i've been loading 230 gr. round nose winchester bullets.  i've took random measurments of my brass and none of them are too long most are a little short.  i've got a case gauge to check them on now and the ones that fit will drop in very nice, but the ones with a bulge don't even come close to fitting. i don't understand what i could be doing wrong.  looking for a little help.

 Are you seating and crimping in the same die? This is a common problem with all pistol rounds. A seat/crimp die roll crimps. A pistol cartridge requires a taper crimp. I recommend you pick up a separate taper crimp die for 45ACP and use the RCBS die to seat only.

Also, depending upon where your brass comes from, say a Glock, there may be a bulge where the Glock did not support the brass at the rear of the chamber.

You MUST full length resize on those. If your resizing die is not capable of reaching the base of the cartridge case, you will not achieve a true full length resize. The Dillon carbide dies usually do the trick for me.

Funny you should mention that. I've been having the same aggravating problems. I am currently using an RCBS Press and started loading .45 acp with Hornady dies, same problem. Hornady tech support tried everything they could with no solution. I then switched to RCBS dies, this was a little better and the cartridges went in a little farther but, still would not go all the way into a case gauge. BTW, the same problem with 9mm's. I've been told right along you can't use a combination seating & crimping die. I went to buy some swaged bullets online yesterday and the manufacturer stated Do Not Use a Combination Seater & Crimping Die but to use  seperate dies for bullet seating and crimping. Most shooters at the local club use a Dillon press with seperate seater & crimp dies and do not have any problems. So, yesterday I ordered an XL 650 along with Dillon dies. I have been told this will solve the problems, we shall see.

Well, it's been about three weeks since I've been using my new XL650. The problems loading 9's & .45 acp's as in the previous post has been resolved. Awesome press!

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