Posted: 8/30/2009 6:39:23 AM EDT
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Does .45 acp ammo get setback easily? , i just got a new to me Colt Commander and I have been carrying it cocked and locked, a few times this week after getting home from work, I would eject the chambered round just to finger the pistol.
When I reload it I usually rotate the round and hand cycle the next round instead of letting it slam home. I am currently carrying ball until I can get around to getting some HP SD ammo for it, just wondering if my gun is going to blow up once I get the gun to the range and shoot up the ball. |
| .45ACP has ALWAYS setback easily for me. It's one of the reasons I keep my .45s with a loaded mag, empty chamber - because if I ever need to clear the chamber, I don't trust the round. For my build, I was gently hand cycling a frame/slide/barrel/mag combination to see if everything looked correct, and I was getting setback even without springs in the gun. Maybe it's the just the 1911 platform, I don't know. |
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Not an expert, but a reasonably quick learner and I've come to believe through personal experience and from others that some setback is virtually unavoidable with .45 acp––factory or reloads.
I've run some quicky tests and with my reloads, setback on a first chambering is approximately .005 (or a little more) and increases with each subsequent rechambering. I've read postings by apparently knowledgeable shooters that claim setback can and should be "zero" but that has not been my experience, nor the experience related by a lot of reloading folks. |
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Definately avoid chambering and rechambering the same round. Every gun is different as to how much setback you will get with a particular round.
Measure a round with a good caliper. Chamber it letting the slide travel home without riding it. Eject and measure again. If no setback, do it again. Remember, this test is only good for this gun and hopefully this brand of ammo with this recoil spring. I personally avoid fooling around with my carry gun unless I am going to shoot it. Just to be on the safe side. 
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| shouldnt be a problem..... i have never run into that problem and i have cycled and rechambered the same round numerous times. only thing that might be bad is the hand chambering, it is a bad habbit and bad gun handling. pull the slide back and let it go. its how i have been doing it and except in cases of the gun jamming (the cartrige nosing down into the feed ramp) i have never had case setback except with taures's hollowpoint ammo. |
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Set back varies from gun to gun, and ammo to ammo. Some guns are worse as is some ammo.
Most police issue ammo is rated by the makers for 3 to 4 cycles before its to be shot up in practice or discarded. There is a danger of over pressure, but the real danger proved to be "second round stoppage". The officer would fire his pistol and it'd fail to feed the second round. This was traced to constantly reloading the same two rounds during daily inspection. There's a piece of film you'll see from time to time on the "police shootout" shows on cable. In this one a Trooper is fired on during a routine stop. He pulls his pistol and fires one shot, and the gun jams with the slide partially open. This was a classic second round stoppage FTF. The police cured the problem by training to rotate the rounds so the same two don't get re-chambered and by having the ammo makers make ammo with tighter taper crimps and a case sealant. |
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My rounds do not look set back, I am just wondering if it will happen. My Colt is factory stock, so I assume it is tuned correctly. Unless its really bad, it won't "look" set back. You are going to need a caliper. Depends on the gun, none of my .45's cause any setback with Fed HST's (my carry ammo. Springfield TRP, Para SSP, and USP Tactical) |
| Most Colts are tuned well enough from factory to run Winchester Ball. It's when you get into running HP's you get into trouble. There is lot's of tuning information I have left in gunsmithing section and all of my 1911 experience is from running Colt's.. Well there is one Para, but it's a 9mm so it's a different animal. |
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There is no set back in a properly tuned 1911.......... none. If you are experiencing set back you have a tuning issue. If your shooting rounds with set back you have pressure issues, potentially dangerous ones. Depends on the ammo. My Les Baer would set back Blazer Brass every time. Blazer Brass sucked. I even got a box that something had wrinkled the corner of from landing on it?. I didn't think anything of it until I opened the box and saw 1/4 the rounds were set WAY back. Sometimes it is a tuning issue, and sometimes it's ammo with poor neck tension or crimp. |
| I unload and load mine just about every day at some point or another if my son is with me, like at night, then re-chamber it in the morning. Most of my 1911s did have setback after a couple of cyclings. I haven't had any problems with my para though as it had a ramped barrel. I think the worst one I ever had with that issue though was my colt lightweight commander. |
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Seems it is something you will have to test with your gun and ammo. With the 45 ACP Ranger I use in the 2 guns I use, there is no setback in 10 -15 chamberings. I have been checking with a caliper each time I unload.
I have also checked my PPK in 380, a 220 in 45, and a P6 in 9mm with no measurable setback yet. |
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Quoted:
There is no set back in a properly tuned 1911.......... none. If you are experiencing set back you have a tuning issue. If your shooting rounds with set back you have pressure issues, potentially dangerous ones. Depends on the ammo. My Les Baer would set back Blazer Brass every time. Blazer Brass sucked. I even got a box that something had wrinkled the corner of from landing on it?. I didn't think anything of it until I opened the box and saw 1/4 the rounds were set WAY back. Sometimes it is a tuning issue, and sometimes it's ammo with poor neck tension or crimp. If this issue didn't possess such harmful potential, I would let this go 12 gauge. Since it does I'll expand. This issue came up a few weeks ago. I had been running Hornady Double Tap and experienced set back. I got out my bullet puller and gave each set back round a few taps to restore OAL and recrimped every round in the box with Lee's factory crimp die. Kind of funny isn't it ? Since then I have switched to Winchester and cycled many times with no set back. The box of Hornady ? In my ammo bag and will be shot up next range trip. I chalked the box up to a QC problem. First time I'd experienced it. If I can find Ranger T's I'm switching. I've run the Blazer and not experienced setback, but then if something fell on the box I could kind of see that happening. I reload 98% of what I shoot and I get no set back in a properly tuned 1911. When I run the same ammunition through a new Colt I expect to see it. When rounds do set back while tuning. I put them back in the box and restore OAL and recrimp. So let me rephrase this a bit. Don't run ammunition that sets back. Now with that said. ––––––You should have zero set back with a properly tuned 1911, provided you are running quality ammunition.–––––––– If your shooting rounds with set back you have pressure issues, potentially dangerous ones. –––––––– You are risking damage to your weapon and bodily injury shooting rounds with set back. |
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Quoted:
Quoted:
Quoted:
There is no set back in a properly tuned 1911.......... none. If you are experiencing set back you have a tuning issue. If your shooting rounds with set back you have pressure issues, potentially dangerous ones. Depends on the ammo. My Les Baer would set back Blazer Brass every time. Blazer Brass sucked. I even got a box that something had wrinkled the corner of from landing on it?. I didn't think anything of it until I opened the box and saw 1/4 the rounds were set WAY back. Sometimes it is a tuning issue, and sometimes it's ammo with poor neck tension or crimp. If this issue didn't possess such harmful potential, I would let this go 12 gauge. Since it does I'll expand. This issue came up a few weeks ago. I had been running Hornady Double Tap and experienced set back. I got out my bullet puller and gave each set back round a few taps to restore OAL and recrimped every round in the box with Lee's factory crimp die. Kind of funny isn't it ? Since then I have switched to Winchester and cycled many times with no set back. The box of Hornady ? In my ammo bag and will be shot up next range trip. I chalked the box up to a QC problem. First time I'd experienced it. If I can find Ranger T's I'm switching. I've run the Blazer and not experienced setback, but then if something fell on the box I could kind of see that happening. I reload 98% of what I shoot and I get no set back in a properly tuned 1911. When I run the same ammunition through a new Colt I expect to see it. When rounds do set back while tuning. I put them back in the box and restore OAL and recrimp. So let me rephrase this a bit. Don't run ammunition that sets back. Now with that said. ––––––You should have zero set back with a properly tuned 1911, provided you are running quality ammunition.–––––––– If your shooting rounds with set back you have pressure issues, potentially dangerous ones. –––––––– You are risking damage to your weapon and bodily injury shooting rounds with set back. For the record, I returned the box for a full refund. I have friends that are in management at Wal-Mart so it wasn't a problem. Yes, that would have caused a serious issue. Some rounds were BAD. |