My grizzly is a newer production, still using B50.
The 400's are gold tip traditionals, with the reg alum gold tip insert. I bought 50 gr weights that screw into the rear of the insert via a long wrench. I am hoping I can run them long with one 50 gr insert, if not, I can add a second weight or heavier broadhead as I am still on the fence about using the 125 stingers.
Newer model, proly has more preload...........should smoke a deer with ease
IIRC the older weights had a more shallow wrench hole (or nothing for wrench). Newer ones are better, but longer since the glue grooves are deeper/wider. I've got some of each LOL.
The long wrench is pretty sweet.
Makes the weight deal way easier, and.............dandy for holding stuff I'm spray painting
1100 forend the last project.