.577-450 Martini-Henry load data

2 community combos with real, chronographed .577-450 Martini-Henry loads — pick a bullet + powder to see measured velocity, ES/SD where recorded, and the accuracy node.

Cast Performance RNFBGC 460gr · Blackpowder FF

.577-450 Martini-Henry1 load0 fps avgrec 85gr

Cast Performance RNFBGC 460gr · Accurate 5744

.577-450 Martini-Henry1 load1,300 fps avgrec 37gr

Data record — not a recommendation. Data record only — always cross-check current published load data; start low and work up. 18+.