Nick Zito wrote:
I've found pieces of the bismuth in random chunks. Like if you smashed the shot with a hammer. I assume it's from contact with bone, but maybe breaking apart in the barrel too. Outside of my realm
It may well break up on impacting bone, but I haven't looked close enough in a dead bird to be sure. It definitely breaks up some leaving the barrel, I've seen it on pattern paper and in the water when shooting at birds down low. If you watch for it you'll see what looks like dust hitting the water, or spatter/tiny holes on the paper.
The tendency to shatter was one of the reasons Bismuth didn't take off in the mid-90's, supposedly the current alloy is somewhat malleable. The Boss shot will shatter if you hit it with a hammer, but not as easily as I recall the early Bismuth shot doing.
I'm trying the Boss shells a little this year, so far I give it an OK. Had good luck with 28 gauge #7 on grouse. Haven't shot enough ducks with the 12 gauge 3", #4's yet to be sure either way.
For me the best ever shot was the discontinued Remington HD, followed by Hevi-Shot which is now my go-to. The two closely related Tungsten based shot types are IMO better than lead ever was and I wouldn't switch back to lead if it became legal. Very few cripples to deal with, W alloys are dense enough to penetrate heavy feathers on the body and kill the birds with body shots. Agreed, however, that one pellet of any kind in the head is worth several in the body.