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Posted: 10/9/2008 6:38:29 PM EDT
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I need help figuring out what is going on with my new RRA .458 upper I got out a couple weeks ago to test and sight in my new .458 Socom and everything was fine untill I had shot about 20 rds. through it, I tried to fire and it just went click. I tried to clear it with the charging handle and it would not move I then tried the foward assist and nothing, I ended up having to break down the rifle and use a screw driver to get the bolt and bolt carrier unjammed. It had ejected the spent round and loaded the new one but the bolt had not locked up and it just jammed, I tried loading a new round and the same thing happend. I was shooting Reed's 350g Hornady SP Ammo, I thought it might be ammo related so I got some SBR 300g FMJ and took it out again and the same thing happend after about 25 rds. any ideas? Thanks Stacey 
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Consider calling Rock River Arms OR sending an IM to "RRAMODERATOR" thats Steve from RRA and he is a great guy, he may be able to assist. When you loaded the SBR and it didnt fire, did you check the primer to see if it had light primer strikes at all? Or was the primer unmarked? I would be curious to know. |
Both times there were no marks on the primer and the bolt was only rotated half way closed and jammed. Stacey |
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measure COAL of the offending rounds Sounds like the bullet jammed into the lands I woudl assume that the bullet metplay or face is marred up a little It may have been that they werent crimped tight enough and the bullet worked out a little during recoil or they may just be loaded too long How does the chamber look? Dirty? Is there a ring in the throat that could be preventing the bullet from completely entering the chamber? If it happens again, you can easily fix it with inertia. hold the forend in one hand and the charging handle in the other Pull on the charging handle and bring the gun down butt first on a hard surface It amy take two or three times to get it out, but it works |
| There have been minor problems with Reeds Ammo so that is where I think you should start looking. It could be that your cases were out of spec. I had the same thing happen on some .470 Rhino cases that were too thick in the neck and they jammed exactly as you described. If you blacken the bullet and case with a Sharpie and chamber a round, then pry it out (easy now that you know how) you will see exactly where things are getting a little too tight. If it is the ammo contact Reeds. If the rifle works with other .458 ammo it is likely their ammo. If it does it on all ammo, your rifle might have too tight a chamber and RR will need to take care of that. |
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I'm having the same issue with Corbon 405s and SBR 300 FMJs. I haven't fired it but when I tried to chamber them the bolt wouldn't go into battery and left marks on the necks of the cases. I have been meaning to ask if anyone else is having issues but it sounds like I just need to call RRA. |
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It did the same thing with SBR ammo on the second trip out, the thing that I dont get is it will shoot the first 20 rds or so ok and then jam. Could this be from the chamber heating up? Stacey |
That is what I was using on my second trip out when it happend. Stacey |
| If it works fine with the ammo & then binds it souds like powder residue in the chamber. Same thing happened to me with my 40X round. I was trying some H4227 loads & it made a mess after 10 or 12 rounds. When I unstuck the bolt I could see the residue in the chamber. If the bolt dosent close completely it will not fire. I doubt the chamber could be so tight the heat could lock the round up in the chamber. Just a thought. |
| We (RRA, Reeds and SBR) are finding that there is lot to lot variation in the brass that is sufficient to cause some of these issues. With the original brass, these issues didn't occur, but part of that was due to the fact that back then, most brass used a different alloy. Higher copper prices have led to changes in alloys that have necessitated changes in loading procedures. Problem is that this change in alloy is not communicated and thus we found out the hard way. This is why things like ISO were invented, so the entire supply chain is on the same page and if your supplier makes changes outside of accepted COA limits, they have to alert you and you have a challenge to qualify the new material in your system (rant off). SBR has changed loading procedures and it appears to have fixed the issues for most. Your chamber might be on the tighter side but it should still not be so tight as to bind upon getting a little dirty. Contact SBR, let them know, they will make it right. |
The only problem with that is it jammed the first time out and I cleaned the bore but the chamber did not look dirty so I did a lite cleaning, It ran fine for 25 rds the second time out and then jammed again with the different ammo and the bore still looks clean. Stacey |
Marty, So you are thinking it is both brands (Reeds and SBR) of ammo and I should get it replaced with new and try it out again? Stacey |
I thonk you could have a combo of tighter than usual chamber plus possible ammo issues, but can't be sure. I would contact SBR and talk with them but also be sure to discuss it with RRA. |
| Ive had the exact same issues. rra upper,reeds and sbr not chambering. bolt just an 1/8 inch or so from being completely closed. all my reloads have chambered just fine. i had issues with my lee dies seizing but im guessing that was a separate issue. without case gauges or chamber gauges on the market we can only guess or send our products back to the manufacture for inspection. Im the type that hates guessing ,and sending stuff back both. i will continue to reload once fired brass hopefully without issues. |
I don't mind reloading, I bought a bunch of brass as well, but it would be nice to be able to fire the 80 rounds of factory ammo I bought. I'm currently waiting for a response from RRA. |
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Ok I finally got an answer from Reeds Ammo it looks like the brass was the problem.
Stacey, Well the good news is that the issue is not with your rifle. The bad news is I still have a lot of looking to figure out the exact cause of the problem, the necks are off center. I have, by hand, checked 4 boxes for you in the gauge and verified all are ready to go. So you have four full boxes headed your way. Sorry for the trouble. ––––––––––––––––––––––––––––- Reed's Ammunition & Research, LLC WWW.REEDSAMMO.COM Ron Reed 1209 SW 129th ST Oklahoma City, OK 73170 5-73-027-07-9G-01978 |
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Quoted:
If it happens again, you can easily fix it with inertia. hold the forend in one hand and the charging handle in the other Pull on the charging handle and bring the gun down butt first on a hard surface It amy take two or three times to get it out, but it works Before applying the technique described above, be sure to fully collapse the stock. When even more force is required step on the charging handle latch using the outside edge of your boot the while slamming the buttstock to the ground. I have done this with the standard collapsible stock (not the type of stock pictured). |
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Holy Thread Resurrection Batman!
Sorry to bring this back up but I just wanted to report I finally got the replacement ammo from COR-BON yesterday (still waiting on SBR) and the new COR-BON does chamber fine so the old rounds must have been out of spec. I guess another answer is that RRA has a tighter chamber then the original specs and now COR-BON has conformed to that chamber. Either way I'll post when I get the replacement ammo from SBR as well. ETA the ammo was returned to SBR and COR-BON (they both issued pick ups by UPS) the last week of October so it took about a month, not bad considering it was right around election time. |
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