Re: .308 win loads with Federal 215 Primers
I have done both LR and LRM primers in 308, not with the bullets you are specifying, with no noticeable change, except when approaching max load with a very slow burning powder, I think ignition was more complete than with LR primers. Probably someone here has a different opinion, but that's my experience.
I loaded most of my 308's with either 150 gr or 165 gr boattail bullets, and in most instances using either Varget or IMR 4064, shot in old Rem. 600 Mohawk with 19" bbl, and 1-9 twist.