JP SCS H2 Spring for .224V

[JsnSanko]

May be a dumb question. I have a JP SCS H2 for a build. Mega upper and lower, head spaced bolt, adjustable gas block and a Barg CLE 224V 22” barrel.

Any suggestions on which of the 5 springs to start? Have a spare steel and tungsten weight to tune. Want to push a bit on velocity and not beat brass up.

 

[hlee]

My 22 Grendel wouldn’t run with the H2 and medium spring. I replaced a tungsten weight with steel and it runs great. This is a rifle+2 gas system length.