hoz53
Gold $$ Contributor
not the box ill keep looking thanksI’ve had same marks and it was from ammo box. Easy to check
not the box ill keep looking thanksI’ve had same marks and it was from ammo box. Easy to check
not the box jessi. i was hoping— ill keep looking thanksAmmo box
now this is wat im concerned about although these are 243 and i believe i only bumped them .003. i should double check that. thanksThese 223 had a head clearance of .014" They came apart on firing & when fl sizing.
No harm done.![]()
yes definately what i want to avoid. these were unfired brass until a few weeks ago but probably 15 years old. there is only mabie 3 or 4 firings on them. i know they could have gotten brittle just setting on the shelf that length of time and should have annealed them but didnt. thanksDon't be too sure about that.......
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i checked and doesnt seem like the box did it. thanksThis
i dont have a giraud and didnt anneal these either so thats not it but good to know. youre right i am trying to figure out what the rings are as i dont want a separation. thanksMy Giraud annealing machine leaves marks exactly like that as it rolls the cases during the annealing process. However, you want to be very sure the rings are nothing more than a cosmetic mark on the exterior. If it is not merely a slight surface mark on the outside, something unpleasant might be impending (i.e. case-head separation.
not the ammo box, i dont have a giraud and i borescoped my dies tonite so i dont think its that. ill keep looking. thanksIf not your ammo box, do you use a Giraud trimmer? Looks to be about the right distance from shoulder???
this is what im gonna do- fire a few new cases and see what they look like. thanksDie stratches go up and down.
Depending on the length of your bullet and if the point is up or down the line rubbed a case guard is usually closer to the base of the case.
Look at a new case, than fire it. That will tell you what you need to know.
Hal
i did the bent paper clip, borescoped the cases — ive got to look at the bore some more but didnt see anything the first time. i did just cut this chamber so that seems like a likely culprit. i also fired these cases today with no ill effects but im thinking about throwing them inthe scrap bucket. thanksI can tell you that I definitely would at least check them with the bent paper clip before I did anything with them... Plus I would check the chamber.... Never mess around with stuff if you are not 100% sure....
thanksI agree it could be die or ammo box, one of those two possibilities. Don’t have a Giraud annealer so can’t comment. Good on you using a hook to scrape along the inside of the case. I use a piece of piano wire bent 90 degrees to a sharpened point to check cases for indications of case separation. Best old school trick in the book. Good luck determining root cause!
this could be as i just cut this chamber. i didnt see anything on first look but ill look again. if thats it in this case ill cut the chamber off and throw the barrel in the ar-15 bin.I had some 6BR cases get rings like that and it ended up being from the rifles chamber. I had to buy a special chamber hone to fix the chamber to stop it from happening.
i dont think ive rolled all these on anything like that. i definately will section one though and check it out— thanksI had marks such as those and they were from, rolling my rounds on the V-blocks on my RCBS case master. To be sure maybe section one case and make sure.
i gotta do that again. thanksI'd check the chamber, while you have the borescope out.
good idea - i thought id mabie use some new cases but why waste those. i think youre right. thanksPolish it off with steel wool and see what part of the process they appear. I suspect chamber
Ya man it's just not worth it.... I have thrown away my share of brass because it made me wonder about one thing or another.... One time I tossed 200 I had done the work on but screwed up.... I would rather loose the brass than have something happen....i did the bent paper clip, borescoped the cases — ive got to look at the bore some more but didnt see anything the first time. i did just cut this chamber so that seems like a likely culprit. i also fired these cases today with no ill effects but im thinking about throwing them inthe scrap bucket. thanks
Separations at that point are from improper fire forming. Dont ask how I know. Had that on my 257ai. New brass didn't jam at the neck shoulder when forming and stretched at that point. One cracked on forming and 2 others cracked on next firing.Don't be too sure about that.......
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I had a similar thing in a brand new chamber. The gunsmith didnt clear the chips from the reamer enough and dragged chips which embedded and made grooves in the chamber wall which left marks like this. Found it with a borescope. I polished them enough to stopped the marks but problem is still in there. With yours, are they coming out of the chamber that way or the sizing die?good idea - i thought id mabie use some new cases but why waste those. i think youre right. thanks
Should not be a separation issue in a bolt action.i believe i only bumped them .003.
These were f-formed properly.Separations at that point are from improper fire forming. Dont ask how I know. Had that on my 257ai. New brass didn't jam at the neck shoulder when forming and stretched at that point. One cracked on forming and 2 others cracked on next firing.