My 300wm has a CBTO with berger 215s of 2.802 99% sure that goes for any .30 cal bullet, right? Or do differing lengths of the bearing surface or anything else effect CBTO. Looking to load up some 225 ELD-M...not sure if I need to measure CBTO again or the ogive is the ogive regardless of what bullet it is? Also, cant find a book starting charge weight for H1000 and 225 ELD-M...probably going to use 69 gr unless someone has a better idea? Based on the berger 230/H1000 being 65.5 for starting.