45ACP help resizing

[J-cat]

But the chamber is finished wrong.

That's like saying you would not straighten a crooked barrel, but instead bend the scope.

[J-cat]

My understanding is that Sig 1911 chambers have a very short to nonexistent freebore and do not do well with Truncated Cone profile bullets, unless you set the OAL very short. It is not a crimp issue. It is more likely an OAL issue.

[Bill Steele]

My understanding is that Sig 1911 chambers have a very short to nonexistent freebore and do not do well with Truncated Cone profile bullets, unless you set the OAL very short. It is not a crimp issue. It is more likely an OAL issue.

Spot on. My SIG 1911 Stainless Target has no freebore (the lands start at the chamber). Truncated cone profile bullets of any sort (many XTP's fall into this category) will jam into the lands and cause the gun to fail going into battery unless they are seated with the shoulder at the case mouth.

[J-cat]

A gunsmith can run a finishing reamer through your barrel for cheap. This will cut a freebore and open up your reloading possibilities.

[Bill Steele]

A gunsmith can run a finishing reamer through your barrel for cheap. This will cut a freebore and open up your reloading possibilities.

I understand, although not all the closest gunsmiths know this, but that is another story. It is easy enough for me to load for the gun, so it is no big deal. My SD guns are Glocks, no freebore problem there.

[tdyoung1958]

No doubt the chamber is on the tight side but since I rarely shoot store bought, I would also size the rounds to fit before I would send a reamer down a finished chamber.

I have 2 Sig 1911's a C3 and a GSR and this happens with both of them. Sorry if they aren't cheap 1911's that will feed front, back and sideways. I know from reloading that if I don't size them that the same issue will occur with the FP lead bullets I use that I'm experiencing with the XTP's. Was just looking for someone in the SC area that uses a four die setup I could run them thru the last die on.

Sorry if I'm just stupid and look for simple answers that I know will work . . .

[huckberry668]

I can't believe I'm the only one advocating not to resize the OD of loaded rounds. Any experienced reloader will tell you it kills accuracy, period!! It's like hacking off your toes to fit the shoe. Don't reduce the bullet diameter if you want your high end 1911 to shoot them accurately.

If it is the lack of 'free bore' in the chamber that causes the feeding problem, you won't fix it by resizing the OD of the rounds. Because it's the shortened 'seating depth' or OAL you need. But seating it too short and you may have other feeding and pressure problems.

Also, you mentioned 4-die set up. the only 4-die set up I know with the sizing ring on the 4th die is Lee Deluxe die set with the factory crimp die. you can buy just the Lee Factory Crimp Die by itself for about $18. I'd loan you mine if I hadn't enlarge the sizing ring.

All in all, good luck, I hope you find what you need and please do let us know how it works out.

[BSlacker]

I can't believe I'm the only one advocating not to resize the OD of loaded rounds.

I wrote in post 16 this:

If you resize loaded ammo you ruin the bullet diameter.

There you go you are not alone anymore.

[Pete1979]

You guys are correct, it is a chamber issue, the OP has a chamber that is tight and seems to have a preference for a certain type or brand of ammo. I run into the same problem with my Springfield 1911 when I use cheap plated or cast bullets. Since I don' have the equipment to size the bullets themselves, I just send the whole mess through a Redding taper crimp die. It doesn't seem to hurt the accuracy all that much. Probably not the best solution with a jacketed bullet but there is no chance of ruining a nice match chamber.

[Bill Steele]

I hope nobody took what I wrote about the lack of freebore in my SIG 1911 as an endorsement that resizing factory ammo is the right approach.

As Jcat suggested, if you want to shoot a particular factory ammo and your gun won't feed it, get the chamber reamed to SAAMI spec or get some freebore added with a reamer (whichever is the problem). Either is a pretty simple fix for a knowledgable gunsmith.

I haven't had the freebore added to my SIG because I can load the bullets the depth needed to work fine and this gun is just a target gun.

[CalTeacher]

I can't believe I'm the only one advocating not to resize the OD of loaded rounds. Any experienced reloader will tell you it kills accuracy, period!! It's like hacking off your toes to fit the shoe. Don't reduce the bullet diameter if you want your high end 1911 to shoot them accurately.
.

I said it too.

[J-cat]

I meant to say it, but got all excited and forgot.

[tdyoung1958]

Don't reduce the bullet diameter if you want your high end 1911 to shoot them accurately.

If I ever need to actually shoot them in a SD situation, I don't think I'm gonna worry about them keyholing into the perp . . .

from my bed to the door is 10 feet. Never really considered XTP's as quality range ammo to begin with

[CalTeacher]

Seriously, just have Hornady exchange them.