DoubleTap Ammunition Hardcast Solid, 45-70 Government, 405Gr, Hard Cast, 20 Round Box 4570405HC 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!