Brass won’t fit in sizing die

[xsn10s]

If I was having that much trouble on unknown brass and a "known" functioning die I'd ditch the brass.

 

[jjmp]

No two chambers are the same unless their cut with the same reamer, op said he was using once fired R-P cases and I'm sure there from a different rifle/chamber . Even new dies ,regardless of brand need cleaning when new , I'll beat it's not the dies ,and I agree get the Innovation Tech/ belted collet dies that Felix mentioned, oh and I've got the belted collet dies their Fantastic and Work Wonderful and Beautifully made . If your a belted magnum shooter/reloader they pay for themselves in no time flat . I use a roller pad with my brass lube,RCBS lube pad and dies ,Cheers.

 

[jjmp]

Correction FEENIX above,thks

 

[Varmint Hunter]

Buy some NEW brass and start from there. You have no idea what the "unknown" brass has been through. Generally speaking; it's just not the best idea to use range brass from a different rifle or brass that could have already been shot a dozen times.

 

[BW64]

I had a girl that wouldn't go ..................oh wait different story. I ran lots of RP used brass through my RCBS dies & never a problem. Check the measurements near the belt & compare to sami specs. Should not be more than .02 or .03 difference. If more then toss the brass. Also if you can scrounge up one piece of new brass & try that before you scrap all the RP brass. JMHO

 

[Rosebud]

Haven't loaded 7 mag in a few years, but if the case goes up to the point of the belt that's it. That's all that gets sized.

 

[Beelzebub]

Yesterday, I posted on a Facebook reloading group that my 7mm Rem Mag brass wouldn't go all the way into my RCBS sizing die. The consensus was "more lube". I just tried that, and dented the cases at the shoulder. Took the die apart, ran a patch through it a few times, and tried another case only to have the original problem again: stopping 3/4 the way in.

I'm going to clean the die with some degreaser next. But I am running out of ideas and patience. I'm using Frankfort arsenal spray on case lube. Brass is once fired Remington. Maybe I should try another lube? Buy virgin brass?

If it is dies that came in an orange box I would say that is your problem. I had one set in 338 Lapua Mag and thy destroyed $2/ea brass rough as a corn cob. I messed up agin recently nd bought another set. again sizing die trash.

 

[Aoudad 101]

I had a girl that wouldn't go ..................oh wait different story. I ran lots of RP used brass through my RCBS dies & never a problem. Check the measurements near the belt & compare to sami specs. Should not be more than .02 or .03 difference. If more then toss the brass. Also if you can scrounge up one piece of new brass & try that before you scrap all the RP brass. JMHO

I thought I was the only one with the had to spit on it problem

 

[243winxb]

https://larrywillis.com/ Buy new brass or size with this, at link. ( as said above)

 

[megastink]

https://larrywillis.com/ Buy new brass or size with this, at link. ( as said above)

I would up buying new brass. I do believe that collet die would work on my current brass, but I'll probably just resell the brass I have now. Got lucky and Norma had 50ct brass for $52. Got 150 on the way that will likely last me for years to come.

 

[mtwarych]

Kinda late to the thread but, have you looked at the heads of the cases to make sure you aren't trying to crush a case that isn't a 7mm mag case?

 

[megastink]

Kinda late to the thread but, have you looked at the heads of the cases to make sure you aren't trying to crush a case that isn't a 7mm mag case?

Yes.

 

[Monster Toms]

years ago, I had the same e problem with some once fired 7 mag brass, found out they were fired in a browning BAR way oversized chamber.

 

[SkipB]

I tried that spray lube on my 25-06 and 270 cases and found my cases didn`t want to go into the die like they should. I went back to using the Hornady paste lube and my cases sized much easier. I dont use that spray lube any more