DUGABOY1, good post. I would like to add that yes Marrakai the lighter bullets kill deer and pigs much faster than the heavier constructed Woodleighs. You will always get the best results when you match the bullet to the game. Reread my original post, the lighter bullets hit the same place, regulate as good as the heavier bullets, and have the same trajectory. Check the Hornady book, compare the 500 grain at 2100 fps and the 350 at 2300 fps, they are nearly identical. I have confirmed this by shooting.
Once again it is a method to use your double rifle to its fullest.

Capt Curl,
Try this load in your 9,3x74R with the 286 grain bullets, start a few grains low and work up, but with 65 grains of IMR 4831, Fed 215 primer and Norma brass the 286 Woodleigh soft, the 286 Nosler Partition, the 285gr. Hawk all hit to the same place and regulate well to 200 yards. The Speer 270 hits the same place at 100 yards, but I have not tested it at 200.
With the 270 Speer 59 grains of RL-15 shoots very well but hits in a different place.
Try the IMR 4831 loads and let me know how they shoot. Which 9,3 do you have?

Also the lighter bullets have less recoil making them more plesant to shoot.
And I have not even talked about using Nitro for Black load technology.
In the 450 No2, how about a 400 grain cast or jacketed bullet at @ 1800fps. Or a 300 grain jacketed bullet at @ 1870fps. These loads are very plesant to shoot and hit with the sights and regulate well at 50 yards. Their trajectory is different from the full power loads [they drop more due to less velocity] but they still make good deer/pig and plinking loads.
Using my loading practices would make even a 577 or a 600 Nitro fun to shoot. And the more you shoot the better you will be with your double when after DG.