personally, just get a few pounds of 2400 and put 17grs of it under those 250gr XTP.
You'll see about 950fps and kill anything you need to point a colt at. if you need more fps, 2400 can deliver it if desired.
it is by FAR the most versatile powder for the "magnums" and colt. Paper puching loads, or grizzly thumpers are easily obtained with 2400.
You'll see about 950fps and kill anything you need to point a colt at. if you need more fps, 2400 can deliver it if desired.
it is by FAR the most versatile powder for the "magnums" and colt. Paper puching loads, or grizzly thumpers are easily obtained with 2400.