TonytheTiger Posted September 7, 2014 Share Posted September 7, 2014 (edited) Decided to put a JP buffer spring in my 16" mid length non adjustable gas standard bcg rifle today and immediately started to get failures to feed with my junky bullet hosing ammo. I threw the old spring back in and it was fine. Didn't feel the buffer impulse either so I'm wondering if the stuff is loaded slow enough that the JP extra power spring is too much for it and it's short stroking. It's also happened with the original spring in 20 degree or lower temps but I don't have access to a chrono so I don't know just how inconsistent the ammo is. Makes me think when I finally get my LMOS system put together I won't be able to get it tuned to reliably run both my cheap practice ammo and decent factory stuff on the same gas setting. Edited September 7, 2014 by TonytheTiger Link to comment Share on other sites More sharing options...
Stlhead Posted September 7, 2014 Share Posted September 7, 2014 Did you do a lockback test to verify it was short stroking? Did you remove the BCG group and offer it rum? Jobu likes rum. Link to comment Share on other sites More sharing options...
TonytheTiger Posted September 7, 2014 Author Share Posted September 7, 2014 Oh yeah I forgot to mention that I had no bolt lock back and that it occasionally does it with the original spring too. Run any brass cased ammo and all problems go away. Ditching the steel case stuff wouldn't be the end of the world for me but it seems strange that a rifle with those specs would be under gassed with any factory ammo. I have heard of friction issues running steel ammo in Pmags, something to do with the mags feeding too slow so just for fun I hosed a mag full of rem oil and it seemed to help for 10 whole rounds. Not that pre lubing my mags and ammo is a reasonable thing to need to do. Link to comment Share on other sites More sharing options...
openclassterror Posted September 7, 2014 Share Posted September 7, 2014 Dang- I don't think I would want oily ammo dragging range crud into my chamber just so I could run crummy ammo. Ever thought of buying a progressive press? Link to comment Share on other sites More sharing options...
TonytheTiger Posted September 7, 2014 Author Share Posted September 7, 2014 It's on the to-buy list, just a ways down. I think I'll start running freedomunitions ammo for now since junk ammo doesn't seem compatible with race parts. Link to comment Share on other sites More sharing options...
Vespid_Wasp Posted September 8, 2014 Share Posted September 8, 2014 Lubing center fire rifle ammo is a bad idea. A lot of the rearward force on a bolt is mitigated by the case being obturated to the chamber walls. Otherwise, lube is just going to attract fouling. Link to comment Share on other sites More sharing options...
Stlhead Posted September 8, 2014 Share Posted September 8, 2014 But if you don't lube it before you stick it.... Wait, what are we talking about? Link to comment Share on other sites More sharing options...
Steve RA Posted September 8, 2014 Share Posted September 8, 2014 Not what you were hoping for !! Link to comment Share on other sites More sharing options...
TonytheTiger Posted September 9, 2014 Author Share Posted September 9, 2014 But if you don't lube it before you stick it.... Wait, what are we talking about?I like where this is going, tell me more.The oiling of the mag was more of an experiment than a potential answer to my problem. That or I was just trying to pretend I was shooting a Fiat-Revelli model 14 machine gun. Link to comment Share on other sites More sharing options...
kurtm Posted September 9, 2014 Share Posted September 9, 2014 Oooohh nice reference! You can and should run graphite on steel cased ammo. Cures the sticking problem, and you don't have to own an olive farm for the gun to run. graphite helps all steel cased ammo to run and run well.....no help in accuracy though! Link to comment Share on other sites More sharing options...
TonytheTiger Posted September 9, 2014 Author Share Posted September 9, 2014 I figured someone here would pick up on that. I'll have to try the graphite, never thought of that. Still thinking about ditching the steel stuff, even though in my gun it shoots 5 shot groups around or a little over 1-1/2 at 100 which is good enough for most of my sub-200yd practice. It does seem to get kind of erratic past 300yds though, that could just be the guy shooting. Link to comment Share on other sites More sharing options...
kurtm Posted September 9, 2014 Share Posted September 9, 2014 Hey, if it does that group wise, graphite it and never look back! This little trick has worked across the board! Just another quality service from Red Neck Tactical!!! No one has stuck a case after graphiting them, lacquered or Polymer!!!! Link to comment Share on other sites More sharing options...
hoodhazard Posted September 9, 2014 Share Posted September 9, 2014 I run better than 12K Russian thru a 16inch DPMS. Never a stuck case in semi auto,polymer and lacquer,only an accuracy one after the years. Replaced the barrel and now it isn't cheap anymore so I don't use it. Link to comment Share on other sites More sharing options...
TonytheTiger Posted September 11, 2014 Author Share Posted September 11, 2014 Is there a specific technique to applying the magical steel case elixir? Perhaps something as advanced as rolling a box worth of cartridges on a paper plate full of graphite or is it a good opportunity to spend some bonding time feeling up my rounds one at a time right before they blow their load? Link to comment Share on other sites More sharing options...
kurtm Posted September 11, 2014 Share Posted September 11, 2014 I usually just put some between two cartridges as they go into the magazine. Every 5-7 rounds. Link to comment Share on other sites More sharing options...
TonytheTiger Posted September 11, 2014 Author Share Posted September 11, 2014 Well thank you sir! I'm off to the graphite store! Link to comment Share on other sites More sharing options...
polymerfeelsweirdman Posted September 11, 2014 Share Posted September 11, 2014 I am a little jealous, I have not been able to get 1.5 moa with tula Link to comment Share on other sites More sharing options...
TonytheTiger Posted September 11, 2014 Author Share Posted September 11, 2014 It's pretty nice to be able to hit most targets with ammo that costs .25 per round. I had two buddies that didn't believe tula could shoot that well, I proved them wrong, one ordered the same rifle the next day and the others been pinching pennies to get one ever since. Link to comment Share on other sites More sharing options...
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