Well, I will respond to your question.
I would try to talk you out of the conversion. I own more guns than I need according to my wife (I still have a list of more needed). I am not a person that has guns that I do not use and hunt with (collection for value). The model 100 in 308 is one of the all time classic hunting rifles. The cal. has taken many a deer and bear. When I was a small lad my dad took his 100 in 308 to Newfoundland and shot a moose and a caribou with it! I really do not see what the advantage would be in the conversion.
Well that is my 2 cents worth any ways, it is your gun do what you want.
If you want to properly preserve velvet antlers, you will have to inject & brush them with formaldehyde or some of the new less toxic chemicals (4 in 1 solution works great as does Knobloch's antler in velvet tan) as its easier to use however, both will work.
First, using rubber gloves take a razor blade and make small incisions at the tips of all points about 1/8". Next hang the antlers upside down, allowing the blood to drain. Starting at the bases inject the solution into the...