You also shoot 100 grain arrows, so…I haven't had favorable results from those heads in the 2.0 or 2.1 version.
I say favorable, I got dead deer, but penetration/exit didn't align with Experience from other mechanical heads.
1.5 you will be fine, but at that point, it's hard to not just use a good fixed blade.
380 gr you can get good performance from a mechanical, just don't use one that has deployment tabs covering 1/3 of the cutting edge.