Re: 6.5 Grendel Help I have a 264 LBC chamber in a 24" bbl. I use Hdny 123 Amax in Lapua case, CCI small rifle mag primer, 28.3 grains of XBR and load to mag lenght. Load is well under 1/2 moa at distance. 2600 fps. Shots on a 5" steel target at 800 are boring, if my wind call is correct...