OAL for 45 ACP w/SWC bullet?


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harmonic
December 31, 2008, 12:31 PM
Here's a pic of some 45 ACPs that might be causing a problem in a Combat Commander.

http://i2.photobucket.com/albums/y26/pinnedandrecessed/DSCN1073.jpg

It's 1.257 inch overall length. Question: Is the ridge that constitutes the base of the bullet supposed to be even with the mouth of the case?

thanx

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Walkalong
December 31, 2008, 12:39 PM
1.257 is OK, and that pic looks just fine. I load 200 Gr SWC's at 1.260 to 1.265.

I can see were the bullets have been hitting the ramp down low and skidding up it. It looks like the rounds are nosediving. That suggests mag problems to me.

harmonic
December 31, 2008, 12:46 PM
I can see were the bullets have been hitting the ramp down low and skidding up it. It looks like the rounds are nosediving.

What are you looking at? The feedramp?

The reason I ask is because I use the same mags in a Mk 4 w/no problem.

Think maybe I should change mag springs?

Galil5.56
December 31, 2008, 01:03 PM
What exactly is the problem?

That style of bullet seated looks like this for me, and is seated @ 1.240". You can go down more to the point that just a "fingernails" worth of the shank is above the case. Might try a bit deeper, and make sure the taper crimp die is set to get rid of the belling, and maybe just a touch more. As shown feeds 100% in my P220 and 1911A1, and my SIG is very critical about too long an OAL.

90158

ranger335v
December 31, 2008, 06:58 PM
"Question: Is the ridge that constitutes the base of the bullet supposed to be even with the mouth of the case?"

That question can only be answered by the pistol's chamber. Load a few as shown and try. If they feed from the magazine and chamber properly, they are fine. If not, change - seat deeper - as needed. There is no formula or magic OAL.

LeonCarr
December 31, 2008, 07:26 PM
Between 1.250 and 1.260. Some unmodified feed ramps have a hard time with SWCs.

Just my .02,
LeonCarr

243winxb
December 31, 2008, 07:35 PM
Lead or jacketed http://www.thehighroad.org/showthread.php?t=416192

MrGreenMachine
January 1, 2009, 08:32 AM
I seat my 200g SWC's at 1.245. Feeds my Sig 220 and Para 1911 just fine. Looks like your crimp is ok from the picture, but make sure you're not getting any bullet setback on feeding from the magazine that may cause it to nosedive.

Steve C
January 2, 2009, 01:44 AM
SWC's need to be seated deap enough so the shoulder of the bullet doesn't engage the rifling and prevent the pistol from locking up. Seat the shoulder so its just slightly above the case mouth. Check the loaded round in your removed barrel to make sure it drops in properly, use a factory load to see how a proper length round looks chambered.

There are many different shaped SWC bullets for the .45 acp so the OAL's will vary by bullet design. Without knowing your specific bullet any OAL suggestion is just a guess and for practical purposes its a useless number anyway. Below is a picture of a SWC that's properly seated.
http://www.members.cox.net/scollins15/Pictures/45swc.jpg

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