A good percentage of the IVI 69 7.62 brass that I am attempting to resize and deprime with my Lee press and dies is impossible to force the die all the way down over the brass. I started with Lee case lube, and now am using Imperial sizing wax, which has helped on some cases. The brass came out of my m14 so it is no doubt stretched more than usual. Sporting brass resizes fairly easily, but this IVI from my M14 is nearly impossible. Any hints other than throw it out? Its a shame because I have several hundred saved up.
resizing IVI 7.62 brass
- Thread starter Grizzlypeg
- Start date
- Location
- Van. Is. B.C.
IVI brass
If commercial brass fired in your M14 resizes fine and IVI is difficult maybe your decapping pin is out far enough to contact the web of the thicker military case. The military brass is tougher and sometimes you can see the discolouration on the necks from the annealing process carried out to soften the neck area. If you do decide to throw it out just send it to me, I will even split the shipping. Who am I kidding I will pay the shipping.
270 totheend
If commercial brass fired in your M14 resizes fine and IVI is difficult maybe your decapping pin is out far enough to contact the web of the thicker military case. The military brass is tougher and sometimes you can see the discolouration on the necks from the annealing process carried out to soften the neck area. If you do decide to throw it out just send it to me, I will even split the shipping. Who am I kidding I will pay the shipping.
270 totheend
I've had no difficulty with FL resizing the IVI 69 7.62 brass.Same for DA brass.Obvious question:are these once fired cases? If so, you might be getting resistance from the decapping pin when trying to force out those tightly crimped military primers.You can actually break the decapping pin in this process.If this is the case, get one of the el-cheapo Lee decapping tools(the one you pound with a hammer).After de-priming with this tool you need to swage the primer pocket to remove the military crimp before you can re-prime.
Older IVI brass is plain hard to resize, I wouldn't even attempt it on a Lee press unless it was a cast iron one.
I have a RCBS Rockchucker and I find the brass hard to size! I have enough comercial brass I don't bother with the IVI anymore, just saving it for a rainy day if I get hard up for brass.
I also use Imperial sizing wax. May the force be with you if you forget to lube the inside case neck.
I have a RCBS Rockchucker and I find the brass hard to size! I have enough comercial brass I don't bother with the IVI anymore, just saving it for a rainy day if I get hard up for brass.
I also use Imperial sizing wax. May the force be with you if you forget to lube the inside case neck.
I have sized lots of IVI and DA. Can't say I found it any different than commercial brass. It could be that my press has more mechanical advantage than your Lee.
Before doing anyhting dumb, go visit a friend with a different make of press and see the cases size easier.
Before doing anyhting dumb, go visit a friend with a different make of press and see the cases size easier.
Being MILSPEC brass the DA and IVI brass is heavier and is preferred for reloading M1 and M14 types which are rough on brass.Some comparative weights:
DA-187gr
IVI-185gr
Federal-175gr
Win-165gr
Imperial-187.5(my reserve if I ever run out of the IVI and DA)
I have used both an RCBS and Redding press to FL re-size the IVI and DA.
DA-187gr
IVI-185gr
Federal-175gr
Win-165gr
Imperial-187.5(my reserve if I ever run out of the IVI and DA)
I have used both an RCBS and Redding press to FL re-size the IVI and DA.
I've resized IVI on two Lees (turret presses), two Dillons (550 and 1000), and at least 4 different RCBS presses (oh, and a Hornady). Once the military primer crimp was taken care of, I had no issues. - dan
Quote: "The military brass is tougher and sometimes you can see the discolouration on the necks from the annealing process carried out to soften the neck area."
ALL bottle neck cases are annealed. The cases move down a little assembly line like miniature pop bottles in a bottling plant. They move past a line of natural gas burners. The number of burners turned on is changed for 22 Hornet cases vs 375 H&H cases.
Commercial cases are acid washed after annealing to remove the stain. Military cases are not washed. No need for cosmetic shiny cases.
If cases are not annealed they will eventually crack while in storage. It is important to the military that ammo have a good long shelf life. The hardness requirements of each part of the military cases is specified. The head/rim is typically harder on a military case than a commercial case.
ALL bottle neck cases are annealed. The cases move down a little assembly line like miniature pop bottles in a bottling plant. They move past a line of natural gas burners. The number of burners turned on is changed for 22 Hornet cases vs 375 H&H cases.
Commercial cases are acid washed after annealing to remove the stain. Military cases are not washed. No need for cosmetic shiny cases.
If cases are not annealed they will eventually crack while in storage. It is important to the military that ammo have a good long shelf life. The hardness requirements of each part of the military cases is specified. The head/rim is typically harder on a military case than a commercial case.
i won't use ivi for the same reason- and i've got a dillon 550- i pulled the rim clean off the 4 that i did try and had to knock the cases out with a decapping rod and a hammer- and this was on the extraction phase, after the round had been resized- and they were EXTEREMELY WELL LUBED
That would be a good comparison.Chamber dimensions on some of these Norincos are quite generous.Even at that, it's hard to imagine that the diameter of the case would expand that much more as the IVI case is pretty heavily constructed with heavier walls towards the head.If you are getting more than usual resistance from an oversize case it is more likely due to an expanded diameter than to a difference in case length.I'd mic and compare the diameter of the bolt gun and gas gun fired cases about 1/4 inch above the extractor groove. P.S. Mic the case diameter before and after firing.
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If the chamber is a little generous in size and the die is on the minimum side it may result in tough re-sizing. I usually knock out the military primer with a unch and hammer and then resize after the pocket is swaged or reamed.
44Bore.
44Bore.
I have resized and loaded quite a few hundreds of IVI brass over the years. Use it all the time to reform to 358 Win.
Never had a problem with it. Just resize, swage or ream out the primer pocket crimp, and load as usual.
Ted
Never had a problem with it. Just resize, swage or ream out the primer pocket crimp, and load as usual.
Ted
Are you using a Hornady die by any chance? I have had problems with them on the extraction phase. Is there anyone around you with a differnt press and a different 308 sizing die? I just can't belive it is a chamber issue.
I'm using Lee dies and a Lee turret press. I've had a small number of the IVI's resize with considerable effort, but more than half require more effort than I care to put on the handle of this press. I actually damaged the somewhat feeble bench I had it clamped to, and had to replace some screws in the bench itself.
I'm going to mike them and see what the diameters are compared to resized brass.
I'm going to mike them and see what the diameters are compared to resized brass.
