Hauling a BPCR up a slope would be possible only for a very large fit teenager using a sling. Your arms and hands would give out quick. They are even clumsy to get in and out of a safe without dinging something.
As far as strength goes the Browning 1885 standard model was chambered for the 7MM magnum. I suspect the BPCR used the same steel for the receiver. The 45/70 is probably limited only by the brass, the strength of the butt stock and the shooter. I have shot a 45/70 bolt gun with 50 grains of 3031 and a 510 jacketed soft point. From the appearance of the primer the pressure was still low (for a bolt gun)!! However recoil was grim.
As far as strength goes the Browning 1885 standard model was chambered for the 7MM magnum. I suspect the BPCR used the same steel for the receiver. The 45/70 is probably limited only by the brass, the strength of the butt stock and the shooter. I have shot a 45/70 bolt gun with 50 grains of 3031 and a 510 jacketed soft point. From the appearance of the primer the pressure was still low (for a bolt gun)!! However recoil was grim.
