That looks like a winner!!! I always believed Boots Obermeyer when he said that 8 twist was a little too much for 140 grain bulllets, he advocates for a 8.25 or 8.5.

Following that logic, the added weight on these 147's should be about perfect in the standard 1 in 8"

With this kind of performance on game, I might have to start messing with these bullets in my 1-8" .264 win mag, I don't know if you could get there in the Win Mag but in the 26 Nosler you might be able to run them over 3000 at the muzzle, my balllistics appp says they should hold 2100 fps and get this kind of performance out to 800 yards...