full resizing 9mm
Quote from Reloader on May 17, 2017, 3:41 pmGreetings,
I've got a bunch of range brass that seem to have been shot with something that had a very loose chamber. When I resize them, the bottom of the case doesn't get resized due to the way the die is tapered. Of course it's adjusted all the way down to the shell plate already. If it were just cosmetic, I wouldn't care, but about 2 in 100 reloads won't fully drop into a Glock chamber, and 15 of 100 won't drop into a Dan Wesson.
I've done some searching around here and elsewhere, and I know the best solution is a roll sizing, but I could buy a lifetime supply of new brass for what those cost. I've also read about people grinding off part of the bottom of the Dillon die, and I've seen reports that the Lee die sizes a bit lower.
Is that true about the Lee die? Any other suggestions?
Thanks,
Rusty
Greetings,
I've got a bunch of range brass that seem to have been shot with something that had a very loose chamber. When I resize them, the bottom of the case doesn't get resized due to the way the die is tapered. Of course it's adjusted all the way down to the shell plate already. If it were just cosmetic, I wouldn't care, but about 2 in 100 reloads won't fully drop into a Glock chamber, and 15 of 100 won't drop into a Dan Wesson.
I've done some searching around here and elsewhere, and I know the best solution is a roll sizing, but I could buy a lifetime supply of new brass for what those cost. I've also read about people grinding off part of the bottom of the Dillon die, and I've seen reports that the Lee die sizes a bit lower.
Is that true about the Lee die? Any other suggestions?
Thanks,
Rusty
Quote from Reloader on May 17, 2017, 9:05 pmIf I found a 9mm that was expanded that much at the base I would just toss it. Someone must be shooting really hot 9s for that to happen. I would purchase a EGW Ammo Chamber Checker . There is a 7hole version that Dillon sales. And there is a 50 hole version ($100) that I am not sure Dillon sales for $19.95. I have EGWs for 9, 223 and 40S&W. They work great.
Why risk a split case that has been over pressured? Range brass should be sorted and expecting some to be scraped. There is lots of 9mm around and over time one can build up quite a supply by being a range squirrel.
JMHO. Load Safe, /L
If I found a 9mm that was expanded that much at the base I would just toss it. Someone must be shooting really hot 9s for that to happen. I would purchase a EGW Ammo Chamber Checker . There is a 7hole version that Dillon sales. And there is a 50 hole version ($100) that I am not sure Dillon sales for $19.95. I have EGWs for 9, 223 and 40S&W. They work great.
Why risk a split case that has been over pressured? Range brass should be sorted and expecting some to be scraped. There is lots of 9mm around and over time one can build up quite a supply by being a range squirrel.
JMHO. Load Safe, /L
Quote from Reloader on May 18, 2017, 12:36 amThanks for the comments, and after looking through some of the brass this afternoon, I think I'm going to just set it all aside for now. I had actually tried to delete this post before anyone replied, but I don't see any way to do that.
I had a bunch of older cases that I've used a number of times with no issues, and not long ago I bought a batch from someone on Gunbroker. As I recall, it was really cheap, and I might see why now. You probably can't name a headstamp that isn't in there, and some of was clearly hot ammo. Given the choice of old, and overstressed, I decided to order some new Starline and start over. I really don't go through that much brass, and I don't shoot at public ranges now, so I can keep track of the number of cycles on it. I figured that's probably the safest option.
Cheers,
Rusty
Thanks for the comments, and after looking through some of the brass this afternoon, I think I'm going to just set it all aside for now. I had actually tried to delete this post before anyone replied, but I don't see any way to do that.
I had a bunch of older cases that I've used a number of times with no issues, and not long ago I bought a batch from someone on Gunbroker. As I recall, it was really cheap, and I might see why now. You probably can't name a headstamp that isn't in there, and some of was clearly hot ammo. Given the choice of old, and overstressed, I decided to order some new Starline and start over. I really don't go through that much brass, and I don't shoot at public ranges now, so I can keep track of the number of cycles on it. I figured that's probably the safest option.
Cheers,
Rusty
Quote from Reloader on May 18, 2017, 5:30 pmIt might be sub machine gun ammo. That stuff can be very hot and loose chambers seem to be the rule. I usually sort out the USA name brands and the foreign/no name stuff. I never have a problem with Win/Rem/Fed/Horn brass, but some of the others...not so good. Try that and see if your failure rate improves. In any case if it is stretched that much I would not trust it. 9mm brass is dang cheap...sort heavily towards the scrap bin IMO!
It might be sub machine gun ammo. That stuff can be very hot and loose chambers seem to be the rule. I usually sort out the USA name brands and the foreign/no name stuff. I never have a problem with Win/Rem/Fed/Horn brass, but some of the others...not so good. Try that and see if your failure rate improves. In any case if it is stretched that much I would not trust it. 9mm brass is dang cheap...sort heavily towards the scrap bin IMO!
Quote from Reloader on May 20, 2017, 2:03 pmI couldn't bring myself to throw all that brass away, so the last couple days I've been sorting through it. I may be wearing out my Dillon case gauge 🙂
I had one bag that was only my original brass, not any of the new batch. It was fired, and SS pin cleaned, and I noticed that nearly all of it dropped right into the Dillon case gauge. I ended up cleaning all the brass, then checking about 3500 cases in the gauge. Some wouldn't even go 1/3 of the way in, but most of the bad ones went in about 75%. I only kept the cases that dropped all the way in, or were just barely proud of the gauge. In the end, I tossed about 1300 cases, and I'd bet 90+% of those were from the 2000 cases I last bought in the last batch.
Thanks for all the comments.
Cheers,
Rusty
I couldn't bring myself to throw all that brass away, so the last couple days I've been sorting through it. I may be wearing out my Dillon case gauge 🙂
I had one bag that was only my original brass, not any of the new batch. It was fired, and SS pin cleaned, and I noticed that nearly all of it dropped right into the Dillon case gauge. I ended up cleaning all the brass, then checking about 3500 cases in the gauge. Some wouldn't even go 1/3 of the way in, but most of the bad ones went in about 75%. I only kept the cases that dropped all the way in, or were just barely proud of the gauge. In the end, I tossed about 1300 cases, and I'd bet 90+% of those were from the 2000 cases I last bought in the last batch.
Thanks for all the comments.
Cheers,
Rusty