by Hoot » Fri Mar 02, 2018 3:00 pm
Yes you can but as BMT85 noted, you don't need to go to that low of a start charge for safety reasons. In my carbine length gas system upper, it cycled them at that charge just fine. If you are using a longer gas system, you might want to try a few when its as cool out as when you are likely to use them, to make sure they cycle, before committing a bunch of them in advance.
FWIW, my carbine sampled upper was broken in and the action lubed up with MoS bearing, grease. Given the role that friction plays in reliable cycling, I can't say how well a dry, unbroken in upper will do.
Hoot
In Theory, there is no difference between theory and practice. In Practice, there is.