If you shoot jacketed bullets, I would lean toward the Gold Dot Speer bullets. They seem to be very accurate and hold together very well. My main experience with them have been 44, 45 , and my new 480 Ruger. My main bullets in all of these are cast though. I shoot a 370 grain gas check LBT style bullet from Mountain moulds at close to 1400fps for my hunting load. I am shooting deer and hogs in east Texas. I actually shoot a little softer alloy bullet. I manufacture Paper Patch bullets for rifles and I just harden this lead to a little under WW hardness. They seem to bend up on most anything they hit and if they don't, oh well. I put one through about 2 to 2 1/2 feet of hog this past season and he didn't seem to slow it down much. The hog dropped and the bullet kept on trucking. One thing, with 255 grain bullets, I would go with wheel weight alloy. If you want to go a little softer, go with 300 or so grain bullets. That way, you will still have good penetration. As one fellow said above, if the Gold dots shoot well and the cast don't, shoot Gold Dots until you get an accurate cast bullet.
Good shooting,
Dave Mace
Sharps made the west safe for Winchester