11-27-2016, 08:52 AM
My Grendel with a 20in 1:10 twist Lilja 3 groove delivers 2980fps with 31.5gn of 8208 under a 100gn NBT in Lapua brass.
The Howa Grendel with a 22in 1:8 twist 6 groove gave 2940fps with 31.1gn of 8208 with a 100gn NBT and 2950fps with a 100gn AMAX in Hornady brass.
The extra 2in won't give much additional velocity so the Howa looks pretty much lineball with my established loads.
The Howa Grendel with a 22in 1:8 twist 6 groove gave 2940fps with 31.1gn of 8208 with a 100gn NBT and 2950fps with a 100gn AMAX in Hornady brass.
The extra 2in won't give much additional velocity so the Howa looks pretty much lineball with my established loads.