I switched to BOSS copper plated bismuth shells a couple of years ago for my waterfowl hunting. I have less cripples and more folded up birds than I did with steel. I did some pretty extensive pattern testing with different chokes and loads from BOSS. I found that it patterned better with a tighter choke and I actually used an extra full turkey choke on a couple of ducks this year but decided I was getting too tight of a pattern and went back to just a full choke. Definitely shoot a few through your gun and see how it patterns, specially if you have a fixed choke gun.
