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Posted: 6/6/2013 3:03:57 PM EDT
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My Full size Sig 1911 won't chamber my reloads.
I am using Missuori Bullet Company 225gr flat heads @ 1.240 OAL with 4.2 gr of Winchester WST. If 1.240 OAL won't chamber am I safe to reduce the OAL? If so by how much? Any guidance would be appreciated Thanks! |
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I had this problem because the bullets I purchased were intended for 45 Colt instead of 45 Auto, and the ogive was too far forward. I'm not familiar with the type of bullet you are using, but I found the problem by comparing where the ojive was on a factory round, and lined it up right above my reload, difference was dramatic enough that I could tell by eye what was wrong.
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Quoted: My Full size Sig 1911 won't chamber my reloads. I am using Missuori Bullet Company 225gr flat heads @ 1.240 OAL with 4.2 gr of Winchester WST. If 1.240 OAL won't chamber am I safe to reduce the OAL? If so by how much? Any guidance would be appreciated Thanks! Do your sized cases fit in a case gauge? Need to know cases are sized correctly before moving on to bullet seating/crimp. Do not reduce OAL. These bullets?
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You might check your crimp. Lead is soft compared to FMJ. If you over crimp it can bulge the bullet a little causing it to bottom in the chamber. Your crimp is to ONLY straighten the case flare. It could very well be 10 other things, but the crimp is one thing that should be checked. |
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Quoted:
My Full size Sig 1911 won't chamber my reloads. I am using Missuori Bullet Company 225gr flat heads @ 1.240 OAL with 4.2 gr of Winchester WST. If 1.240 OAL won't chamber am I safe to reduce the OAL? If so by how much? Any guidance would be appreciated Thanks! Can you slowly close the slide with a resized empty case? If not; the case may be too long. The case should be .898" You can apply soot (maybe talc powder) to the bullet; then try to chamber. Check the bullet for any signs of making contact with the rifling; you may be able to tell without applying anything to bullet's surface. Any marks or scratches? Something else you can do is take a empty fired case that the bullet can slide into the mouth pretty easy (but snug; may have to just barely resize a little of the mouth) and see it that will chamber closing the slide very slowing by hand. Remove the round and measure the OAL. If the OAL is less that what you have now; the bullet is hitting something; probably the rifling. You'll have to be the judge. If it is hitting the rifling; you wanted the rifling to push the bullet into the empty case and give you the OAL to just touch. I don't know what the free bore is supposed to be; probably .003-.005? It would be wise to find this info and reduce this "just touch OAL" by that amount. I'm assuming you are working up a load starting with a reduced load. Too much free bore yields lower pressures and muzzle velocities than normal for a given powder load and too little free bore yields higher pressures and muzzle velocities than normal. |
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Quoted:
Quoted:
My Full size Sig 1911 won't chamber my reloads. I am using Missuori Bullet Company 225gr flat heads @ 1.240 OAL with 4.2 gr of Winchester WST. If 1.240 OAL won't chamber am I safe to reduce the OAL? If so by how much? Any guidance would be appreciated Thanks! Do your sized cases fit in a case gauge? Need to know cases are sized correctly before moving on to bullet seating/crimp. Do not reduce OAL. These bullets? It is those bullets. I am using a Lee Loader kit and I have hammered all the cases into the sizing die. I do not think the Lee loader crimps the case at all I had made up some dummy rounds for dimension earlier with no primer or powder and noticed that they would not chamber at the OAL of a FMJ round. Thanks Thurman |
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As above, back up and start from the beginning. Size a few cases, see if they chamber with no powder/primer/bullet.
Take the barrel out of the slide and check for chambering by dropping the sized case into the barrel. It should fall in all the way and should fall out when turned upside down. |
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Quoted:
Take a sized case and see if it will chamber. Once we know that, we can move on to other things. I don't see why your bullet that you have won't work. <a href="http://s250.photobucket.com/user/dryflash3/media/Dies/PB050550.jpg.html" target="_blank">http://i250.photobucket.com/albums/gg272/dryflash3/Dies/PB050550.jpg</a> Using a loader like this in 45 ACP right? Try to chamber a sized case and report back. That is exactly what I am using. I chambered a sized case and it drops into the chamber free and easy. This is once fired S&B brass if that matters Thanks for the help so far |
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Quoted:
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Take a sized case and see if it will chamber. Once we know that, we can move on to other things. I don't see why your bullet that you have won't work. <a href="http://s250.photobucket.com/user/dryflash3/media/Dies/PB050550.jpg.html" target="_blank">http://i250.photobucket.com/albums/gg272/dryflash3/Dies/PB050550.jpg</a> Using a loader like this in 45 ACP right? Try to chamber a sized case and report back. That is exactly what I am using. I chambered a sized case and it drops into the chamber free and easy. This is once fired S&B brass if that matters Thanks for the help so far OK, good, you do have the barrel out of the slide, yes? Now seat a bullet (no powder/primer) and crimp. Drop the dummy round into the barrel. It should fall right in all the way and fall right out when turned upside down. 
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Next thing to try is seating a bullet in a sized case (no primer or powder, we are building a dummy round) Before you can seat a bullet you must first bell or flair the case mouth.  Should look like this. Left, sized case. Middle belled case. Right bullet on top of belled case. Just enough bell so bullet can start in case without scraping on case mouth. Seat bullet 1/2 way between the top of the lube groove and where the bullet goes from full diameter to where it starts to taper. You should be close to 1.250 - 1.260. Then you need to remove the bell/taper crimp. You should end up with a case mouth diameter of .471. Reread the die instructions on how to use your tool. If all went well dummy round should drop into your chamber. Good luck, let us know how it goes. |
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I checked on the Missouri Bullet Co site and those bullets look good for .45ACP. They are not 45 Colt bullets.
Although your overall cartridge length is within spec, take a look at the edge of the case mouth with bullet seated. The bullet should be seated deep enough so that the case mouth is just at of a hundreth of an inch below where the bullet contour starts to slope in to the nose of the bullet. Too much lead showing at full bullet diameter above the edge of the case mouth can jam in the rifling lead and prevent full chambering. In the 45 this is most often seen on semi wad cutter bullets that have a little lead shoulder below the truncated cone nose of the bullet. That little shoulder can't stick up much above the case mouth. Your bullets are truncated cones, but don't have the shoulder like a SWC. Anyway, this in one more thing to check. Great to see you are making ammo with a Lee Loader.. |
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