Agree on the 250 or 300 Barnes MZ, for longer range work (out to 200 yards with 3.5" high sight in at 100 yards) you can use a Barnes Origonal 45/70 bullet 300g in an MMP Orange sabot OR a black crushed rib or you can use a Barnes TMZ with supplied sabot or a BONDED SW all will give pass thru performance and mostly boom flops, also try high shoulder shots at close range with these bullets, no more tracking, 2 holes, 2x expansion, massive internal wound channel. So short range high shoulder, long range boiler room behind front shoulder.

Opinion on PB, shoot them as Frontier Gander recommends or dump them, I dumped them after several hits and no recover, for information on PBs (the negative, you can hear lots of positive):
http://www.the-gleasons.com/powerbelt_page.htm

Now do yourself a favor and do a google search for "Powbelt Fragments" or "Nosler Partition Fragments" or "Barnes MZ Fragments". You find very little for Nosler fragments or Barnes Fragments, but you see a lot of PB fragments. Also read the product review page of Cabelas and MidWay for the PB, listen to the whole story. You will find a lot of people experience what you did. I got the buck or doe, but no blood trail and the bullet fragmented, especially on close shot. Check it out, then make your decision based on logic, facts and not emotion or hype. I think they are a >>great<< bullet in a FlintLock with 60 to 80g of goex and sight in wiht open sights at 50 yards, the key is to keep them below 1400 fps, then you get "devistating performance" as advertised. Just 1 opinion, but I have "been there done that and I AIN'T going back".

Chap Gleason