I know I'm a little late here but have some input. For 30 years I carried a 358 Norma Magnum most of the time except for fall brown bear when they were feet away as opposed to yards. My bro in-law took his brown bear with it and hounded me out of it,,yes I did OK $. About a week later I sent my 30 Gibbs to JES and he tranformed it to a 35 Gibbs. It also came back a tackdriver!!! The 20" Norma Mag was 2500fps with 280 Swift Av Frames and 2675 with 250's, the 24" Gibbs has bettered both of these and I guessing more is possible if I cared to,, my powders are RL-15 and H-4895.
