i have seen a lot of stuff about wingnuts , but never heard anyone mention sharpening them. always wondered why nobody did , and i think it is cause maybe they hunted over dogs.
im currently using some 3/16 hex nuts epoxied on to some cheap dowel arra's , with a nickel or two epoxied on top of the nut. each nickel is 5 grams so roughly 77 grains.
good on ya tho. i was eyeballing some "tee nuts" , but those buggers arent very cheap. if youre into sharpening , try googling them , they might be just what you need.
-hov