M2 with Salvo Issues

[Arceface1]

Hello.  Having issues cycling some low powered rounds through my M2 with Salvo attached.  Wondering if there is anything I can do to the bolt, springs, or whatever to make it cycle lowered powered rounds reliably when suppressed.  I know the whole inertia thing and the minimum 1 7/8oz 3 dram thing.  Thanks. 

[Steve Rose]

A Wolff reduced power (-25%) action spring and reduced power hammer spring might let you run 1145-1200 fps 1 1/18 oz loads with the Salvo attached.