The set up-

SPRish rifle. I got the Yellow Tavern reduced power spring kit, rather than trying the 15 minute trigger job..I'm not keen on cutting springs and such...


The Problem-

Using both XM193 and M855, Lake City, the firing pin will ignite the M855 but has a hard time with the XM193..

Is if safe to say that LC is using the same primers or could they be different? Could it be the OAL of the rounds?

The firing pin is lightly denting the XM193....on the second try the primer ignites....on the M855, the firing pin is striking it as it should be...

Any help on this is much appreciated...I have also e-mailed Yellow Tavern...