While I don't claim to know precisely what is occurring when this happens, for me it's been when the weather is extremely humid (freezing rain) and the temperature transitions from the 40s into the 30s.
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While I don't claim to know precisely what is occurring when this happens, for me it's been when the weather is extremely humid (freezing rain) and the temperature transitions from the 40s into the 30s.
I shoot outside right through the winter. Here in Michigan it usually gets around 0-35F (sometimes colder) this time of year and never have had personally, seen, or heard of the issue the OP presented being caused by 40-50F degree weather whilst using SLIP 2000 (the same lubrication I and many use up here). This isn't to say lubricants don't become affected by the cold. They'll thicken up for sure but to cause the OP's problem I'm not sure that's a major part of it.
I wouldn't think twice about a 14.5'' midlength especially due to moderately cold to cool weather.
Last edited by mini4m3; 01-11-12 at 23:31.
I wanna clear things up here a bit and make sure it's known I HAVE NOT had any problems with the gun actually running, cold weather or hot as hell. I'm ONLY talking about manually clambering a round via a speed reload, when the bolt is locked to the rear via the bolt catch/release or using the CH to release the bolt. OR when doing an initial Administrative load when the bolt is forward on an empty chamber.
Once the round actually gets chambered, the pressure and force generated from the gun firing a round is plenty enough to fully eject the spent brass and load the next round in the magazine.
Something that just donned on me though is that the only other gun I've had this same issue with was last year with one of my 11.5 guns, and the one thing they all have in common is I've run them all suppressed before the problem occurred. So maybe it's just a combo of the extra thick layer of soot from running suppressed beforehand, using the thicker EWL lube, and the slightly cooler temp that's causing it?
For those of you who run suppressors often, do you typically run your gun several thousand rounds without any sort of wipe down? Or do you make sure to clean it/wipe it down quickly more often than that?
ETA: Whenever it happened with my SBR last year I wound up swapping the buffer spring and saw that the one I was using was close to 2" shorter than a new one, which instantly solved the problem (But I don't remember the condition of the gun at the time). So that of course led me to believe that was the problem with that one. But as I said in my OP, this gun's spring wasn't that bad, and the other one gun my friend was shooting which also had the issue, though not as bad, had a mostly new sping in it.
Last edited by RetreatHell; 01-12-12 at 00:26.
S/F
Paul
I think this happens to be the answer...especially given the circumstances Jay describes when he experiences it. 30-50 degrees and humid? Sounds like us.
Lubing the buffer and spring would also jive with what it "feels" like the gun needs. All that suppressed shooting and what not....
See you soon!
I have been experiencing the same malfunction, except it happend during firing Both range days it was in the 20s, the first day the gun was dry... So I applied some Slip EWL, which was rather thick but once it worked into the weapon it was malfunction free.. The second day at the range the gun was doing the same..The only difference being I started with a clean and lubed weapon..
I will be headed back to the range in a few days , I am going to take Jay's suggestion and lube the buffer spring, hopefully that makes a difference
Paul,
Before you start wearing the same underwear on the range....me thinks it could be the dope behind the weapon and not the dope on the weapon.
The rifle runs fine once the round is chambered....IMO, it's gotta be you brother.
The temperature drop has more of an effect on you than it does the weapon. Your reactions are probably slower, I think you might be inadvertently riding the charging handle & slowly finger banging the bolt catch. I saw this problem in 3/2 when we were doing the work up for Norway and again in 2/1 in smallboats, the Marines were cold, their reactions were slower...they had issues getting the rifles into condition 1.
S/F
Paul
How much slower? Is the difference palpable, and/or producing a real change in functional threshold at that temperature? I'd wonder about the gun.
The 6920, certainly. An H2-buffered mid-length like the N4? I would expect that gun to be closer to threshold by virtue of component combo alone, so I'll defer on that one. No experience with a DD 11.5.
Meteorologicals can be considerations, but still, at 40 degrees? Doesn't wash with my experiences.
2012 National Zumba Endurance Champion
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The difference was noticeable. If you are the type that accessorizes your firearm to the edge of reliability it is enough to make them not work. Now this refers to firing the gun of course.
Switch to this buffer!!!
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