Not sure what category the grendel belongs in, it's 6.5 but certainly not "big stuff" Anyway. I'm having a bolt gun built in this caliber 1-8 twist. I need some pet loads, trying to save time and money shooting a bunch of different components. It's fun but at nearly $30.00 a pound for powder, $40.00 for 100 bullets, $100 for 100 peices of brass. Thanks for any help.