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  #1  
Old 09-23-2019, 07:29 PM
Tensaw Tensaw is offline
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.45 acp oal

I have recently acquired my first 1911 in .45 ACP. The first 100 rounds fired was factory ammo with no problems. Then I started shooting rounds that I loaded early in the year for a Sig P220 that I had. I've had a several mags where the first round failed to chamber. It looks like the nose of the bullet is wedged against the feed ramp. These rounds were loaded with an OAL of 1.200" and I'm thinking they should be loaded a little longer for this pistol? If this makes sense what should the OAL be for a 1911?

Last edited by Tensaw; 09-23-2019 at 07:32 PM.
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  #2  
Old 09-23-2019, 07:38 PM
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apipeguy apipeguy is online now
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Most likely, but what bullet are you using? I’m sure there is someone here with experience with whatever bullet it is.
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Old 09-23-2019, 07:55 PM
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What bullet shape?
A lot of bullets, regardless of shape, can be loaded at 1.25", but that might not be optimum.
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  #4  
Old 09-23-2019, 08:42 PM
Tensaw Tensaw is offline
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I'm using 230 gr. round nose.
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Old 09-23-2019, 08:59 PM
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Conventional RN, flat or bevel base, I load 1.265".
I had some 200s with a deep hollow base, which needed to be loaded closer to 1.2" for consistent velocities, but they still fed fine.
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Old 09-23-2019, 09:14 PM
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Haven’t loaded any round nose in a while but think I ran between 1.260 and 1.265.
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  #7  
Old 09-23-2019, 09:16 PM
OS1880 OS1880 is offline
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I load RN 230 gr at 1.260
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  #8  
Old 09-23-2019, 09:47 PM
Twoboxer Twoboxer is offline
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COL I use for 230gr RN in my 1911 is 1.230" . . . but that's neither here nor there.

What was the COL of the factory rounds you used? That proved functional for 100 rounds, use that length.

If you don't have any more, then make a dummy round (no powder or primer) with COL 1.260" and try to chamber it from the magazine manually. If it doesn't feed smoothly, seat the bullet deeper to (eg) COL 1.250" and try again. Continue reducing by .010" (or 0.005" if you prefer) until you find the length that feeds. Once found, make a second round and feed/eject both manually. If that works, you have your final COL.

Your pistol determines the COL required to feed a specific bullet profile cleanly, nothing else matters. If your pistol wants a COL shorter than published in the load data you were using, note that max load will be reached using less powder.
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Old 09-23-2019, 10:19 PM
jjfitch jjfitch is online now
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Don't forget magazine design...

Quote:
Originally Posted by Twoboxer View Post
COL I use for 230gr RN in my 1911 is 1.230" . . . but that's neither here nor there.

What was the COL of the factory rounds you used? That proved functional for 100 rounds, use that length.

If you don't have any more, then make a dummy round (no powder or primer) with COL 1.260" and try to chamber it from the magazine manually. If it doesn't feed smoothly, seat the bullet deeper to (eg) COL 1.250" and try again. Continue reducing by .010" (or 0.005" if you prefer) until you find the length that feeds. Once found, make a second round and feed/eject both manually. If that works, you have your final COL.

Your pistol determines the COL required to feed a specific bullet profile cleanly, nothing else matters. If your pistol wants a COL shorter than published in the load data you were using, note that max load will be reached using less powder.
"Your pistol determines the COL required to feed a specific bullet profile cleanly, nothing else matters."

"nothing else matters"?

Not all magazines are created equal! Feed lip design and height of feed lips affect release timing and angle of release!

I'm thinking it's a combination of magazine design coupled with the individual pistol and COL for the specific bullet.

I have settled on a specific bullet and COL but a couple of my 1911's have dedicated magazines.

To say your pistol will determine COL without factoring in magazine design may prove troublesome!

Smiles,
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Last edited by jjfitch; 09-23-2019 at 10:29 PM.
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  #10  
Old 09-23-2019, 11:25 PM
Oldfut808 Oldfut808 is offline
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just show a picture of your ammo

a picture is worth a thousand words
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  #11  
Old 09-24-2019, 06:13 AM
Tensaw Tensaw is offline
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The factory ammo that ran fine was WWB and I don't have any more. But it would be easy to pick up another box and measure the OAL. And then shoot them just to be sure.
Thanks guys.
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  #12  
Old 09-24-2019, 06:28 AM
Nitro.45 Nitro.45 is offline
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1.2 is just way to short for most.
Iím at 1.25, always have been. Itís a nice round number!
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  #13  
Old 09-24-2019, 02:21 PM
Twoboxer Twoboxer is offline
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Quote:
Originally Posted by jjfitch View Post
"Your pistol determines the COL required to feed a specific bullet profile cleanly, nothing else matters."

"nothing else matters"?

Not all magazines are created equal! Feed lip design and height of feed lips affect release timing and angle of release!

I'm thinking it's a combination of magazine design coupled with the individual pistol and COL for the specific bullet.

I have settled on a specific bullet and COL but a couple of my 1911's have dedicated magazines.

To say your pistol will determine COL without factoring in magazine design may prove troublesome!

Smiles,
Isn't the magazine part of the pistol lol?
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  #14  
Old 09-24-2019, 02:32 PM
Bayou52 Bayou52 is offline
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My fave COL for 230 grain RN running in the SR1911 is 1.23". I've found that longer COLs cycle just fine upon firing with no issues.

However, I do have an issue with hand ejecting rounds in the 1.26" range or so. They don't manually eject and tend to get hung up in the port.

But for my particular SR1911, a 1.23" COL 230 grain RN manually ejects with no issues.

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Old 09-24-2019, 02:44 PM
jjfitch jjfitch is online now
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Not sure...

Quote:
Originally Posted by Twoboxer View Post
Isn't the magazine part of the pistol lol?

I'm totally not sure I'll "Google" it.

"1911 magazine requires a subscription"!

Smiles,
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  #16  
Old 09-24-2019, 05:29 PM
cw308 cw308 is offline
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1.200 is for a hollow flat point bullet like a gold dot , 230 FMJ is 1.260 . Your FMJ's are seated too deep , were they store bought ?
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  #17  
Old 09-25-2019, 07:14 AM
Viper_29 Viper_29 is offline
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1.200 is a bit short for 230gr, more appropriate OAL for a 200gr bullet. I'd go to 1.25 and evaluate from there.
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  #18  
Old 09-25-2019, 08:37 PM
Tensaw Tensaw is offline
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The load data from the powder manufacturer has 1.200 as their spec. I did try loading some longer (don't remember how much) and they didn't fit in the P220 mag. I've gotten some factory ammo that runs fine in this 1911 and they are 1.268.
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  #19  
Old 09-25-2019, 09:09 PM
CT911 CT911 is offline
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Typically the powder manufacturer gives the OAL "tested". They may have used a barrel fixture during testing. Think of it as a data point not an OAL recommendation.
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  #20  
Old 09-25-2019, 09:29 PM
Rosco Shooter Rosco Shooter is offline
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When I bought my Chip McCormick magazines for use in my Kimber Raptor, the instructions indicated they fed most reliably with cartridges of an over all length of 1.250. The instructions were spot on. Hope this helps.
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  #21  
Old 09-26-2019, 05:10 AM
johnnyreloader johnnyreloader is offline
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1.20" is way too short for 230gr ball ammo. Only time I got "Glock Bulge" from a G21 was loading to that length with a charge a couple tenths below max.
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  #22  
Old 09-26-2019, 05:57 AM
Longone Longone is offline
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https://www.alliantpowder.com/reload...3&cartridge=35
Maybe this will help.
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  #23  
Old 09-26-2019, 12:23 PM
Suitcase Suitcase is offline
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Sometimes the slide lock will interfere with the cartridge coming up out of the magazine. Since you state that it is the first round, make sure the first round case head is against the back wall of the magazine. Insert the magazine slowly and check that the top round does not touch the slide lock as it moves past it.
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  #24  
Old 09-28-2019, 05:56 AM
Tensaw Tensaw is offline
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I should have mentioned that I'm using 230gr. PLATED RN. bullets. My understanding has been that you use date for a lead bullet when using plated or coated bullets. So I've been using data for LRN bullets. Is that incorrect?
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  #25  
Old 09-28-2019, 07:37 AM
CT911 CT911 is offline
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Lead data works fine. Due to the "thin" plating plated 230's tend to be blunt nosed in shape compared to FMJ. Try a 1.250 OAL and a .470 crimp.

Last edited by CT911; 09-28-2019 at 09:49 AM.
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