Here's the completed gun.

[Linked Image from i.imgur.com]

Here's a mock up of the two bullets I'm starting with. The large hollow point is the 43.5 grain and the dimple nose it the 36 grain.

[Linked Image from i.imgur.com]

Here are the 2 25 yard targets shot with factory Winchester 50 grain FMJ ammo. Left is 5 shots, right is 3 shots.

[Linked Image from i.imgur.com]