G,day,
Wanting to build a .308 1.5” case rifle to shoot the 311299 ,will be using 1/12 twist on a Rem 600 action, have a std. 1/12 reamer designed for J words, any thoughts on throat and lead dimensions suitable for the above bullet ,bore riding section is .301 cast in depleted Lino about 20 brin.

Thanks Mal in au.