The very frangible bullets, VMax, TNT, BlitzKing, BT and most light, generic HP's, work the best when everything goes right. But you need a clean broadside, direct frontal or quartering away shot. These situations will offer you the best chance of a small entrance wound and internal bullet disintegration with no exit. You will sometimes experience an ugly, large exit wound with any of these bullets with a desired broadside shot scenario. When faced with a quartering towards or any other shot angle that brings the shoulder bone into play you have a good chance of an entrance splash wound. Even seen ribs cause splash entrance wounds.
I've found I get less chance of ugliness when using a more solid bullet. PSP's, Partitions, and solid copper bullets will have a much higher chance of an exit wound but less chance of it being explosive on either side of the yote.
Edit - Despite this, I use the Speer 52g HP bullet. It has splashed a couple of times on me, still fatal hits, but it just shoots very consistently and liquifies their internals.
I've found I get less chance of ugliness when using a more solid bullet. PSP's, Partitions, and solid copper bullets will have a much higher chance of an exit wound but less chance of it being explosive on either side of the yote.
Edit - Despite this, I use the Speer 52g HP bullet. It has splashed a couple of times on me, still fatal hits, but it just shoots very consistently and liquifies their internals.