I am starting on my 17-223 varmit build #2(waiting for reamer) It has occured to me that the gas port hole on a 223 is almost as big as the .17 bore.
What is the smallest gas port hole any one has gotten away with on a 223 build?? I am thinking of trying a custom GB with tighter piston to block clearances and possably having the piston run an inch or so in this block with tighter clearances to try to get the bolth my 223 and the soon to be done 17-223 to cycle with a smaller hole. was also thinking of a lightest possable recoil spring. was also considering a smaller piston as well thinking it would take less volume to move it. was going to try one the same as a FAL
I also need a few AMD 65 pistons to play with If anyone has a few originals laying around CHEAP I could use a few to play with. I gave mine away a year or so ago.