Underwood 45-70 Gov +P 300gr InterLock JHP, 20-Round Box

Underwood Ammo (part no. 916) loads this 45-70 Government +P round with a 300-grain InterLock jacketed hollow point over nickel-plated brass, giving lever-gun and big-bore hunters a hard-hitting option loaded to +P pressure for extra velocity. Underwood Ammo builds its reputation on pushing established calibers to their performance limits, and the InterLock bullet’s mechanically locked jacket-to-core design resists separation on impact for deep, controlled penetration on heavy game. The nickel-plated case resists corrosion and feeds smoothly, and it’s worth confirming a 45-70 rifle is rated for +P pressure before shooting this load. In rifle ammunition built for serious big-bore hunting, this is a purpose-built load.

Key Specifications

• The chambering is 45-70 Government +P, loaded to higher pressure than standard 45-70.
• The bullet weighs 300 grains.
• The bullet is an InterLock jacketed hollow point, with the jacket mechanically locked to the core to resist separation.
• The design is built for deep, controlled penetration on heavy game.
• The case is nickel-plated brass, resisting corrosion and feeding smoothly.
• The +P pressure rating means shooters should confirm their rifle is rated for it before use.
• The cost works out to about $2.22 per round at the listed box price.
• Each box holds 20 rounds.
• Boxes are packaged 10 to a case for high-volume shooters.

Frequently Asked Questions

Is 45-70 Gov +P safe in any 45-70 rifle? Not automatically. Shooters should confirm their specific rifle is rated for +P pressure before making it a regular hunting load.

What does the InterLock design do? It mechanically locks the jacket to the core, so the bullet resists separating on impact and holds together for deep, controlled penetration on heavy game.

Buy Underwood 45-70 Gov +P 300gr InterLock JHP Ammo

Heavy game calls for a bullet that holds together under a hard hit, and this InterLock load is built to deliver exactly that from a 45-70. Order from our Lubbock, Texas gun shop and it ships fast to your door.