A 45-70 load that will deliver superior penetration on big game and remain safe to shoot through all guns chambered in 45-70 (except the old trap-door style). This load runs at 25,000psi yet has the ballistics found in much higher pressure cartridges. Deer, elk, moose, hogs, and bear will not like this one! Caliber : .45-70 Government Bullet : 405gr Wide Flat Nose Ballistics : 1810fps - 2914 ft./lbs. - 22.0" bbl. Marlin