CJW Posted September 15, 2015 Share Posted September 15, 2015 I need to fiddle with springs on my SCS, but I don't know which one I will end up needing. What I'd like to do is test a few out at the range until I get reliable bolt-lock, but I can only do that if it is safe to shoot a few test rounds through the gun without reapplying Loctite to the main hex screw on the SCS during tests. Anybody done that? Is it possible to shoot 5 or 10 rounds through a non-Loctited SCS without destroying anything important? Link to comment Share on other sites More sharing options...
Gunnar Posted September 15, 2015 Share Posted September 15, 2015 You do not need to loctite the unit while you are swapping out the springs for testing purposes. Link to comment Share on other sites More sharing options...
CJW Posted September 15, 2015 Author Share Posted September 15, 2015 You do not need to loctite the unit while you are swapping out the springs for testing purposes. Awesome, thanks! Link to comment Share on other sites More sharing options...
BitchinCamaro Posted September 15, 2015 Share Posted September 15, 2015 You'll find that the loctite residue applied at the factory will make the screw plenty hard to re-install. I forgot to re-apply and put 2 matches on various spring combos- probably about 600 rounds altogether- and nothing moved. You'll be fine. Just make sure you heat that sucker up before you try and unscrew it the first time. Link to comment Share on other sites More sharing options...
CJW Posted September 15, 2015 Author Share Posted September 15, 2015 Yeah, I watched their video, so propane torch for the screw, and acetone for cleaning off the gunk. So, do you think it makes sense to leave the residue on until I am done testing, then clean and reapply when I am completely done? Link to comment Share on other sites More sharing options...
BitchinCamaro Posted September 16, 2015 Share Posted September 16, 2015 You'll understand when you get the screw back on for the first time; it's not going anywhere! Forget about it for testing purposes and pay attention to your spring selection. Be sure to report back with your ammo/load and spring selection and then locktite to your heart's content. Link to comment Share on other sites More sharing options...
CJW Posted September 16, 2015 Author Share Posted September 16, 2015 Well, what I need to tune is a Stretch-16 with the included SST gas block and an RCA low-mass steel BCG (more or less—titanium firing pin and Gibbz side-charger special cam pin). First function test cycled great but locked open maybe a quarter of the time on an empty mag. Ammo is 69gr Black Hills. I figure if I set up for that, the 55gr Atlanta Arms will be no problem. The RCA was off a prize table and I only just realized that some of their carriers come with the adjustable gas key—I hadn't even thought to look for that—so I may be able to tune things without changing springs at all. I have to go have a closer look... Either way, my g/f has a pinned 14.5" with a Syrac adjustable and, I think, a Young's low-mass BCG pushing a JP SCS. That will probably only run 55gr FMJ, but it doesn't lock open even with the Syrac at full gas, so I will definitely be fiddling with that one. Link to comment Share on other sites More sharing options...
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