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I have a Sabre Defense upper on a RRA lower that I cannot get to run reliably. I've run it wet, I've run it dry and I've tried different magazines.
When shooting the rifle, the new round catches the empty brass and they both get caught in the chamber area.
It happens more with Wolf than Hornady Ammo. Reloads do it also.
Not sure where to start; extractor, ejector, buffer/spring, etc. Any suggestions are greatly appreciated.
Thanks,
Dave
will the rifle cycle by hand? If so proly in the gas system or buffer. Give some specs on rifle gas system, buffer type, and some of the more experienced guys can proly help.
Bill Alexander
Unregistered
Start with the extractor. Look at the spring as this is the quickest thing to do. It should be a four coil regular unit with black insert. If this is correct then you either have a sharp extractor or incorrect geometry on the claw chamfer which runs the base of the case into the extractor tip.
If all else fails call me and we will see if we can get it sorted out for you.
Bill Alexander
Unregistered
See, I had not even begun to consider that! I was assuming that the rifle cycled and trapped the brass. Some days I hate these miserable rifles.
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Bill and Ricsmall, thanks for the help.
I've looked at the extractor first. The extractor spring is correct and I took the points off of the extractor. Hopefully I'll get out for test run tomorrow.
It cycles manually 100%. It will partially run. Hornady runs with one jam/magazine. Wolf will jam several times per magazine.
The buffer and spring are standard carbine weight DPMS from a kit. Gas system is carbine length with a flip up front sight and gas block combo. I don't know the maker-it is unmarked.
if im not mistaken, some of the guys on here talk about needing a heavy buffer if you are running a car length gas system. also, you may want to check into an adjustable gas block with the car gas system. maybe some of the veterans will chime in. in the meantime, you could try a search on this forum, the search engine works pretty good on here for specific topics. good luck, and keep us posted.
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An "H" buffer would probably help. I know the 18" systems are a bit overgassed on average, and I'd suspect a 16" with a carbine length gas system would be as well. Mr. Alexander would know more definitively than me though.
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Thanks for all of the recommendations.
I worked the extractor and took it back to the range. It does not like Wolf ammo or brass.
I shot Hornady factory and Hornady Brass reloads with 10 and 26 round magazines. It ran 100% excepyt for one round that didn't quite chamber.
Wolf ammo and brass on th eother hand... ughhh. It wouldn't run reloads in Wolf brass or Wolf ammo.
Time to sell the extra Wolf ammo and Brass I guess.
It's reliable enough for hunting but I'll wait before I try a 3-gun match with it. An adjustable gas block is next.
keep working at it, youll get it.
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Variable Wrote:An "H" buffer would probably help. I know the 18" systems are a bit overgassed on average, and I'd suspect a 16" with a carbine length gas system would be as well. Mr. Alexander would know more definitively than me though.
Variable here is a quote from BA "Within the Grendel models the only unit I would regard as over gassed is the 16" Tactical. The 10.5", 18" and 20" are slightly under while the 24" and 14.5" are about perfect. We are currently correcting the 16" with the removal of the 90 gr TNT ammunition and the replacement of the 100 Berger HPBT."
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rasp65 Wrote:Variable here is a quote from BA "Within the Grendel models the only unit I would regard as over gassed is the 16" Tactical. The 10.5", 18" and 20" are slightly under while the 24" and 14.5" are about perfect. We are currently correcting the 16" with the removal of the 90 gr TNT ammunition and the replacement of the 100 Berger HPBT."
Maybe my memory is faulty, but it always seemed to me like there were quite a few 18" tube users complaing and going to adjustable gas... Maybe my ole' timers is kicking in though.
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rasp, and to all--the H2 buffer is trully the best & easiest pop in - mod. I've ever made to the Grrr... =wow ! Smoothed the action out to a tamed -shrew?! Witnessed by a few, shot by 2,= awesome! BTW-same stock 5.56 spring. The big question is-- why did AA not put this info in with my upper, at the time of purchase?
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06-17-2012, 03:35 AM
(This post was last modified: 06-17-2012, 03:39 AM by sneaky one.)
hey bobber, I am currently replacing half my hunting ammo for deer, moose, elk, oink, etc, w/ gmx ammo. It will hit harder than heavier wt. class of (cup,core- lead taste- units.) The only reason it seems , to put an adjustable block upon it--is to minimize the effort to retreive ones brass, if one 's butler isn't there to find it..
I just got back from the range today because my 6.5 wasn't feeding correctly. From what I've read here I will have to try.
Basically it seems that the trouble is more with my reloads. When I fire the first round the case doesn't eject, but gets hit or shoved back in by the next round coming up from the magazine. I've been using Hornady 123 Amax new ammo. Tried the Wolf 120's as well they work some of the time. I've been reloading with Horandy Amax and IMR8208 powder. 28.0-28.8 grains. Friend said maybe I need more powder. Can someone tell me what the Hornady reloading book gives for 123 gr Amax. Also to check my scale. Even cut down the recoil spring in the carbines stock. I've tried everything to get it to work correctly. Sounds like I'll see about the shell holder which has been said wasnt cut correctly. Oh yea I use Hornady dies.
Thanks for the info if anyone can give me other tips I'd appreciate it.
