I’m happy to go up in broadhead wheight over my field points,,,but never under.
My thinking is that I do all my tuning with field points because I shoot them much more than I do broadheads.
So if I’ve got everything sorted with my field points an then shoot any lighter wheight in a broadhead,I’ve just reduced my FOC in the one area it’s the most important.
Go the other way and I’ve incressed it,,which so far has only ever been a good thing.
I do shoot broadheads for 3-4 days before I go on a hunt because I find I shoot low when I first switch over,,,I put this down to the incressed length of my arrow an the fact I do see my arrow tip as part of my over all sight picture.
Other than that,,she’s all good.

John.