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The HSM Bear Load is purpose-built ammunition that earns its name through heavy-hitting performance in the field. With a 430-grain hard-cast lead bullet featuring a gas check, this load hits at 1801 feet per second with 3098 foot-pounds of muzzle energy—velocities and power levels that set it apart from standard .45-70 factory offerings.
The key to this round's effectiveness is the combination of weight and construction. That 430-grain bullet isn't just heavy; it's specifically designed for maximum penetration without deformation. The round-nose flat-point profile creates a large wound channel while the hard-cast lead construction maintains bullet integrity through tough material, whether bone or heavy muscle. The gas check prevents lead fouling and helps maintain accuracy throughout extended shooting sessions. These are loaded into quality brass cases with temperature-stable powders and primers, so you get consistent performance whether you're shooting at sea level or in the mountains.
HSM built this load specifically for hunters working in bear country and pursuing heavy game that demands reliable one-shot stops. The ammunition pairs well with modern .45-70 rifles like Marlin lever-actions and single-shot rifles. Twenty rounds per box makes it practical for your hunting trips, and the reloadable brass cases add value for those who reload their own ammunition.
Users consistently report that these rounds shoot accurately and deliver clean burning characteristics. You'll notice the higher velocity compared to milder loads, and the recoil matches the power being delivered. If you're serious about hunting large game or want ammunition designed specifically for deep penetration and stopping power, this is the type of load worth understanding and trying.
The HSM Bear Load is designed for modern .45-70 rifles in good condition. It works well in Marlin 1895 lever-actions (post-1972), Browning 1885 and 1886 replicas, single-shot rifles like Ruger #1 and #3, T/C Encore, and modern Winchester 1886 versions. Due to higher velocity, this load is not recommended for antique or original Trapdoor Springfield rifles.
The HSM Bear Load pushes significantly higher velocities than traditional .45-70 loads, delivering more energy at the muzzle and downrange. This is achieved through careful powder selection and the hard-cast bullet design, which allows safe use of these higher velocities without bullet deformation or performance loss.
Yes, the ammunition comes in quality brass cases with Boxer primers, making them reloadable. This adds value if you reload your own ammunition and want to customize loads or preserve components for future use.
The gas check is a small copper cup fitted to the base of the hard-cast bullet. It prevents hot gases from eroding the lead bullet during firing, which reduces lead fouling in your barrel and helps maintain accuracy throughout extended shooting sessions. This becomes increasingly important when pushing cast bullets at higher velocities.
| Caliber/Gauge | .45-70 Government |
|---|---|
| Case Material | Brass |
| Cost per Round | 2.60 |
| Grains | 430 GR |
| Length | 6.5500 |
| Manufacturer | |
| Manufacturer Part Number | 457012N |
| Shipping Weight | 2.1 |
| Units per Box | 20 |
| UPC | 837306003592 |
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