I'm looking to work up a new load for my .308 using Lapua 155gr Scenar's. I have IMR 4895 that I was using for my 180gr SMK loads. Plus I have some H335 and Win 748 that I'll be testing as well.
When I cross check the Hodgdon load data with the Sierra load data the 4895 loads are significanly different. The Hodgdon starting loads are at where the Sierra Max Loads end.
Sierra Load Data
Sierra 155 SMK
IMR-4895
Start 39.8gr @ 2500fps
Max 43.7gr @ 2800fps
Hodgdon Load Data
Sierra 155 HPBT
IMR-4895
Start 43.5gr @ 2664fps
Max 47.5gr (compressed) @ 2897fps
If I cross check the H335 they are within a few tenths of a grain and the best I can do with the Win 748 is 150gr to 155gr and they are still pretty close.
So, I assume start with the Sierra spec and see where it leads me. Is anyone else loading 155gr's above 43.7 grains of 4895?
When I cross check the Hodgdon load data with the Sierra load data the 4895 loads are significanly different. The Hodgdon starting loads are at where the Sierra Max Loads end.
Sierra Load Data
Sierra 155 SMK
IMR-4895
Start 39.8gr @ 2500fps
Max 43.7gr @ 2800fps
Hodgdon Load Data
Sierra 155 HPBT
IMR-4895
Start 43.5gr @ 2664fps
Max 47.5gr (compressed) @ 2897fps
If I cross check the H335 they are within a few tenths of a grain and the best I can do with the Win 748 is 150gr to 155gr and they are still pretty close.
So, I assume start with the Sierra spec and see where it leads me. Is anyone else loading 155gr's above 43.7 grains of 4895?