About 5-10 grains, I agree, but certainly there is a lot of room for variation here. If you just took off the diffence in the bevel, it would be very minimal.
Allegany was the vendor at Kzoo selling the Grizzlies. Orion picked up a package of LW's for me. I just setup and arrow using a 200 gr. LW Griz., 100 gr. steal BH insert, 100 gr. brass arrow inserts in a CX 300 for an EFoC of 28% for a total arrow weight of 688 grains...pinwheel flight! The new Grizzlies are ground nicer, have better tips and are just little more refined all the way around. I love em!
Kris