whats coal for 7lrm? red snake has dbm for t3 that can go 3.5"
searched a little: Gunwerks just gave me their data for 180 hybrid. H1000, 70.5 grains, fed 215, OAL 3.430"
at least with the RS DBM, doable, and I have a tikka at home I might want to tinker with. got me thinking now.