EBR Shooter Posted July 1, 2014 Report Share Posted July 1, 2014 My wife and I just purchased two DPMS 308's. Mine is a SASS and hers is the REPR. We just got her can in and went to the range. We have run about 250 rounds combined through both guns and every once in a while we will have a case just jam up in the chamber. After I get it out, it is always the same case markings of RP on the primer end. I know it stands for Remington Peterson but is there anyone else that has these rifles and or has the same problem? Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted July 1, 2014 Report Share Posted July 1, 2014 What size projectile are they? Quote Link to comment Share on other sites More sharing options...
survivalshop Posted July 1, 2014 Report Share Posted July 1, 2014 New rifles , run them a little wet with oil for a while , then you can go back to normal oiling . What magazines are you using , the DPMS that came with the rifle , if so try a Magpul LR 308 PMag or another brand , although the top of the line will be the PMag. There are very good steel mags out there also , one is the original CProducts are very good , no sure of the newer ones after the Co. was sold . Quote Link to comment Share on other sites More sharing options...
gnatshooter Posted July 1, 2014 Report Share Posted July 1, 2014 Speaking of running wet, and brass sticking in the chamber, I've read in a couple places that there should never be any oil in the chamber -- that it should always be run dry. Any thoughts on that? Quote Link to comment Share on other sites More sharing options...
FaRKle! Posted July 1, 2014 Report Share Posted July 1, 2014 (edited) We just got her can in and went to the range. We have run about 250 rounds combined through both guns and every once in a while we will have a case just jam up in the chamber.Does it only happen when suppressed?How does the rim of the case look? did the extractor tear the rim off? Edited July 1, 2014 by FaRKle! Quote Link to comment Share on other sites More sharing options...
edgecrusher Posted July 1, 2014 Report Share Posted July 1, 2014 There's no reason to oil a chamber. You can lightly grease the locking lugs, but that's it. Quote Link to comment Share on other sites More sharing options...
Rsquared Posted July 2, 2014 Report Share Posted July 2, 2014 ^^^^ I was just going to say the same thing. I always use a thin coating of hi-temp bearing grease (the blue-ish type) when I run my stuff suppressed. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted July 2, 2014 Report Share Posted July 2, 2014 Yes,Try to keep all lubricants out of the chamber . I always put a very small dab of grease on the back of the bolt lugs . The term of running them wet doesn't mean pouring oil into the action , but does mean you use more lubricant than you normally would . Quote Link to comment Share on other sites More sharing options...
gnatshooter Posted July 2, 2014 Report Share Posted July 2, 2014 Yes,Try to keep all lubricants out of the chamber . I always put a very small dab of grease on the back of the bolt lugs . The term of running them wet doesn't mean pouring oil into the action , but does mean you use more lubricant than you normally would . 'Zackly. I grease the lugs lightly, oil nearly everything otherwise. Still, there's gotta be a reason for keeping oil out of the chamber. That reason may explain the stuck brass, if there's lube in the chamber. Like maybe lube burns and after burning takes up more space. Chamber mops might be more important than advertised. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted July 3, 2014 Report Share Posted July 3, 2014 The force of chambering a round in the chamber is going to displace any excess oil that might be in the chamber. Don't worry about lubing the hell out of the upper and running it. Don't even waste the time of running a chamber mop into the chamber after you oil up. Militarily, we had bigass squirt bottles of CLP on movement ranges. Lock the bolt to the rear, 2 or 3 trigger-pulls of the squirt bottle into the ejection port door from front to back, right onto the bolt face (locked back), then release the bolt and squirt one more on the BCG side. Never, ever had any first-round issues with any lube, running it just like that. If you have some kind of an issue with excess oil deforming your brass cases, then you have a loose, out-of-spec chamber, or you chambered the wrong round in the wrong gun. Quote Link to comment Share on other sites More sharing options...
EBR Shooter Posted July 7, 2014 Author Report Share Posted July 7, 2014 I am using the 168 gr BTHP Sierra Matchkings Quote Link to comment Share on other sites More sharing options...
EBR Shooter Posted July 7, 2014 Author Report Share Posted July 7, 2014 We run both types of mags. My SASS will run both but her REPR only likes the DPMS metal mags Quote Link to comment Share on other sites More sharing options...
EBR Shooter Posted July 7, 2014 Author Report Share Posted July 7, 2014 No it did it both suppressed and regular. The rim was fine. Quote Link to comment Share on other sites More sharing options...
edgecrusher Posted July 7, 2014 Report Share Posted July 7, 2014 I'm thinking an extremely tight chamber. Quote Link to comment Share on other sites More sharing options...
FaRKle! Posted July 7, 2014 Report Share Posted July 7, 2014 No it did it both suppressed and regular. The rim was fine.So you get stuck cases in both rifles or just hers?If there's no damage to the case rims you might have weak extractor tension which you can upgrade with stiffer springs. Quote Link to comment Share on other sites More sharing options...
EBR Shooter Posted July 7, 2014 Author Report Share Posted July 7, 2014 It s only the RP cases and it happens with both rifles. I sorted out all cases and removed them. Although they case gauged the just got stuck. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted July 7, 2014 Report Share Posted July 7, 2014 Your reloads or factory ammo ? Quote Link to comment Share on other sites More sharing options...
EBR Shooter Posted July 8, 2014 Author Report Share Posted July 8, 2014 reloads Quote Link to comment Share on other sites More sharing options...
edgecrusher Posted July 8, 2014 Report Share Posted July 8, 2014 That right there is pertinent info. Quote Link to comment Share on other sites More sharing options...
edgecrusher Posted July 8, 2014 Report Share Posted July 8, 2014 That right there is pertinent info.you should be breaking your rifles in with factory ammo. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted July 8, 2014 Report Share Posted July 8, 2014 Double check your reloading procedures & loadings . Make sure of proper trim to length & sized correctly .What type sizer die are you using ? Full length or Small base . RP ( Remington Peters ) is some soft brass & may not like hotter than normal loadings . I get some of my best groups with RP brass , go figure . I mostly use LC brass (Lake City ) Quote Link to comment Share on other sites More sharing options...
EBR Shooter Posted July 8, 2014 Author Report Share Posted July 8, 2014 I am using the Horndany match dies and a standard book load. I didn't think to break it in with factory ammo. I do trim all cases before loading. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted July 9, 2014 Report Share Posted July 9, 2014 As said , try factory or mil spec ammo . I would use mil spec 7.62x51 to break them in. Strange the RP brass is the only ones you are having problems with. Normally with a tight chamber , it wouldn't be particular of what brass screws up . Another thing to try is a Small Base sizer die , it will size the case lower in to the web of the case , as you probably know . Quote Link to comment Share on other sites More sharing options...
EBR Shooter Posted July 9, 2014 Author Report Share Posted July 9, 2014 I basically stole 200 brand new pieces of Lapua brass that is brand new in box and both are the same lot number. I got both boxes for $60.00. I will start loading on those Quote Link to comment Share on other sites More sharing options...
EBR Shooter Posted July 9, 2014 Author Report Share Posted July 9, 2014 What is a good break-in procedure? Also, thank you all for the great information. Quote Link to comment Share on other sites More sharing options...
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