About Fed and GC and cleanliness....can't say that I have noticed a difference.
Durability.....I surely get more than four reloads from GC and Fed hulls...easily 8 to 10. I do, however, prefer the STS/Nitro hulls.
I am loading for 16 yard singles and using one ounce of shot at 1200-1250 fps.
“Auto racing, bull fighting, and mountain climbing are the only real sports ... all others are games.” Ernest Hemingway ...
NRA Life Member