ALG Advanced Combat Trigger - Purple Spring

I just finished up my Aero Precision M5 (308 AR) build. I went with an ALG ACT and used the purple 4.5 lb hammer spring. Has anyone else used these with 308. I'm curious if they have had any light primer strikes. With the crappy late CO winter I haven't had an opportunity to get out to the range and try it out. The hammer strike sounds much lighter than mil-spec hammer strike. Curious what others' experiences might be with the purple spring, particularly with 308/7.62x51 primers.

Thanks

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ALG Advanced Combat Trigger - Purple Spring