My chrony tells me my ten Point shoots at 310.
I refletch all arrows I hunt with; to me the moet important thing is for all arrows to shoot the same that means at least some helical.
I use different heads for deer than I do for boar bear or elk.
Yes the Muzzy is an excellant deer head, but if don't put heical in your fletching all regular bladed heads will do some wind planing. Normally they do not wind plane with field or practice tips.
Thats why a lot of people like the mecs. Lee