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Stuck 300wm cases

ecm1997

Private
Minuteman
Jan 22, 2020
41
12
Texas
I got 150 pieces of new Norma brass and IMR 7828ssc to work on a load for my rem 700 sendero 300wm. I used the 208 eld-m bullet and federal GM215M primers. I loaded with a 20 thousandths jump. I started at 71.5 grains and I didn’t have any problem with the bolt lift but it felt like the case was stuck when I tried to pull the bolt back toward me. I got 2780 ft/s from that load. I looked at the case and didn’t see any pressure signs on the case head or primer. This is the first time I’ve used Norma brass or 7828ssc. I’ve been using ppu brass and the regular, non ssc imr 7828 and I’ve never had a problem up to 75 grains and ~2960 ft/s. Any ideas why I’d be having this problem?
 
Just out of curiosity, did you FL size or just neck size? I can't make assumptions on the differences in powder and cases but I can't imagine it would cause problems without showing pressure signs...

R700's can have pretty anemic primary extraction camming in my experience, which could fail to brake the case free of the chamber if it started out a little tight around the base/body to begin with.

I might try to measure case capacity in gr of water just to have another data point if it were me.
 
I just ran an expander through the necks before loading. I full length sized a couple of them to check the fit in my action and they cycled through fine. I’ll take a look at case capacity tomorrow
 
I had the same problem with the same rifle. My "opinion" is when Remington cut the chamber it was on a Friday afternoon, didn't give a shit and squeezed 4 or 5 more barrels with the reamer and the chamber was undersized. The round would chamber just fine, after the 2nd or 3rd shot extracting would get very difficult. Actually had one case get stuck in chamber, had to use cleaning rod to get it out. Took it to the gunsmith and he polished the chamber and it fixed that problem. Then the fricken thing had no consistency. Had gunsmith fit a new Krieger barrel. All is well.
 

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Sometimes they put too much wax on the case at the factory and this wax causes the case to seize in the chamber when the case expands under pressure.

I had this happen with brand new Hornady 308 brass. Had to pound out the case with a cleaning rod. The case had splotches of black wax at the case head that looked like it detonated under pressure. They were dark and sticky. These cases had a pretty thick film of wax in them from the bag.

I now tumble all my new brass prior to loading.
 
I had the same problem with the same rifle. My "opinion" is when Remington cut the chamber it was on a Friday afternoon, didn't give a shit and squeezed 4 or 5 more barrels with the reamer and the chamber was undersized. The round would chamber just fine, after the 2nd or 3rd shot extracting would get very difficult. Actually had one case get stuck in chamber, had to use cleaning rod to get it out. Took it to the gunsmith and he polished the chamber and it fixed that problem. Then the fricken thing had no consistency. Had gunsmith fit a new Krieger barrel. All is well.

Did that happen with everything you ran through that barrel? I’ve got about 300 rounds of mostly factory but some reloads through mine and this is the first time it’s happened to me
 
I never got passed the first box of factory ammo. Took it gunsmith. Once the chamber was polished all I used was reloads. I use standard dies. Never had a sticky case after that. Look at it this way, you say the round chambers fine, you have a factory rifle, standard chamber, you size with standard dies. It shouldn't do it at all. Seems like you have worked with it a lot longer than I did, I don't think it is your ammo.
 
I have a Rem 700 that they cheaped up on the action and after firing when you lift the bolt handle there is very little camming action at the top of the bolt lift to start the initial extraction of the fired case.
Check that out.
With a Mauser action rifle I have that initial cam extraction on bolt lift is substantial as compared to the Rem.
Took me a while to figure that out. I think it is problematic to a range of S/N Rem 700s.
 
After reading your op, I think your issue was different than mine. My rifle wasn't right from the beginning. From the first round, chambering a round didn't seem right, then the problems with extracting. Got that resolved, then couldn't get it any better than 1"-1.25" groups. Think the barrel was on the outside limits of their quality control limits.
 
After reading your op, I think your issue was different than mine. My rifle wasn't right from the beginning. From the first round, chambering a round didn't seem right, then the problems with extracting. Got that resolved, then couldn't get it any better than 1"-1.25" groups. Think the barrel was on the outside limits of their quality control limits.

Yeah I think you’re right. Hopefully it is something as simple as wax on the brass from the factory as mentioned above. And when shooting, I had a couple .5-.6 groups and one about .35”. Id rather not have to change the barrel on it so soon
 
No issues chambering and extracting unfired cartridge? I had an issue with some factory ammo in a Ruger 338 WM where there was residual line of some sort on all the cartridges. Had the difficulty extracting after firing including flattened primers but it would cycle without problems before firing. Maybe try cleaning the loaded rounds with a mild solvent and a rag and see if that makes a difference.
 
No issues chambering and extracting unfired cartridge? I had an issue with some factory ammo in a Ruger 338 WM where there was residual line of some sort on all the cartridges. Had the difficulty extracting after firing including flattened primers but it would cycle without problems before firing. Maybe try cleaning the loaded rounds with a mild solvent and a rag and see if that makes a difference.

None. Only time I had a problem was after a round was fired. I shot a few factory Hornady before I started my reloads and didn’t have an issue with them either. Yesterday I ran the cases that got stuck through a full length sizing die and they fit in the action with no problem
 
Did you measure before and after on the fired cases?

Headspace (base to shoulder)
Mouth of case

Were there any signs of case scraping like this pic?
 

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Yeah I’ve got the before and after measurements written down at home. I could see some light marks right over the belt on some cases but they weren’t as bad as the one in the picture. What caused that to happen to yours?
 
Nickel playing and residual lube of some sort. As soon as I switched to naked brass it solved the problem. Did you check to see if there was residue on those reloads?
 
There wasn’t enough on them that it jumped out at me but I’ll check when I get home. I’ve still got several boxes that I haven’t loaded. I’ll be sure to tumble and wash before I load any more
 
Do check that camming/initial extraction function of the bolt. Rem 700s that are likely to experience that are S/N range RR I was told but may be wrong on that, but can happen on other rifles as well.
No rifle should have problems like yours unless something is wrong. Be it you, the ammo, or something is fucked up with the rifle.
We buy these rifles to shoot, not only factory ammo, but good quality reloads also.

We don't buy rifles and expect that we have to "Wipe the Baby's Ass" every time we shoot them and they shit.

My rifles all shoot, extract, feed and fire the next one or they are on the Smith's bench finding out WHY. FM

Just my thoughts. FM
 
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This is why I don’t buy remingtons any more.

bought an 870 super mag, took 2 cases of ammo of pounding the slide Open before the damn thing wore down the burr in the chamber enough to cycle.
 
I would have only pounded 1 to 10 rounds out and be pissed. then off to the gunsmith's bench or back to the factory it would go.
The gun would have been cleaned, oiled and greased where applicable before I tried to fire it and if it didn't work right, that is why they have warranties.
We don't get from Remington the quality we were used to.
Guns and rifles I bought from not too many years ago never gave me that kind of grief. Load em and shoot em and not look back.
They don't build em like they used to, none of them, no matter the brand. FM
 
So an update on the case sticking issue... I had 30-40 more Norma cases that I had already primed but not loaded. I wiped them down with alcohol to remove whatever film was on them and loaded three. I went out yesterday and shot them to see if this was the fix. Two of the three extracted with no resistance. I got a little bit of a hang up on one of them. It wasn’t as stiff as the first ones that did this but I could still see some scrape marks above the belt. Still no pressure signs on the case head