260 rem cast loads with unique

[blue32]

I was thinking of substituting the 308 win loads for 260 rem with unique since the major difference is neck size. Anyone have experience with that? Would 10 grains under a 140 cast gas checked bullet work? Haven't seen any data for 260 rem cast with unique.

 

[GooseGestapo]

10gr will work. However due to narrower bore, max will be lower than for a .308.
For better cast bullet info, go over to castboolits..com
Infinitely better cast bullet knowledge over there.