Finding the right 45-70 cast bullets can completely change how your rifle feels at the range. It isn't just about saving a few bucks over those shiny jacketed rounds, though that's a nice bonus for anyone who shoots more than a box a year. There is a specific kind of satisfaction that comes from sending a heavy, hand-lubed chunk of lead downrange, especially when it's coming out of a classic lever-action rifle. It just feels right, like you're tapping into the history of the cartridge itself.
The 45-70 Government has been around since the 1870s, and for most of its life, it lived on a steady diet of lead. While modern copper-plated or jacketed bullets have their place, many enthusiasts find themselves coming back to cast lead for everything from casual plinking to serious hunting. If you've been on the fence about making the switch or you're just looking for tips on how to get better performance, there's plenty to dive into.
Why stick with lead in the modern age?
You might wonder why anyone bothers with 45-70 cast bullets when we have fancy bonded projectiles and high-tech ballistic tips. The truth is, the 45-70 is a "slow and low" kind of round. It doesn't rely on screaming velocities to get the job done; it relies on mass and diameter. Because of those moderate speeds, lead bullets perform exceptionally well without the risk of breaking apart on impact.
Another big factor is customization. When you buy jacketed bullets, you're stuck with whatever the big manufacturers decide to put on the shelf. With cast bullets, you can choose the exact hardness, weight, and nose profile that your specific rifle likes. Every barrel is a little different, and being able to tweak your projectile to match your bore can shrink your groups significantly. Plus, lead is much easier on your barrel's rifling, meaning your favorite rifle will likely outlast you.
Choosing the right weight for your needs
When you start looking at 45-70 cast bullets, the sheer variety of weights can be a bit overwhelming. You'll see everything from 300-grain lightweights to 500-grain "buffalo stompers." Most shooters find a sweet spot somewhere in the middle, but your choice really depends on what you're trying to achieve.
The 300 to 350-grain bracket
These are great for a day at the range where you don't want to go home with a bruised shoulder. They're lighter, faster, and have a flatter trajectory than the heavier options. If you're shooting steel targets at 100 yards, these are a blast. They also work surprisingly well for deer-sized game if you keep your distances reasonable.
The classic 405-grain
If there is a "standard" for the 45-70, this is it. The 405-grain cast bullet is what the cartridge was built for. It offers a great balance of recoil and momentum. It's heavy enough to penetrate through just about anything in North America, yet it's manageable enough for an afternoon of practice. If you aren't sure where to start, you can't go wrong with a 405-grain flat-nose design.
The heavy hitters (500+ grains)
These are for the folks who want the full "Government" experience. Shooting a 500-grain lead bullet feels like throwing a brick. The recoil is significant, and the rainbow-like trajectory requires some practice to master. However, for long-range "buffalo" matches or just the sheer cool factor, these heavyweights are hard to beat.
Hardness and the leading myth
One thing that scares people away from 45-70 cast bullets is the fear of "leading"—that nasty buildup of lead inside the barrel that's a pain to scrub out. A lot of shooters think that if they just buy the hardest bullets possible (measured on the Brinell scale), they'll avoid the mess. But that's actually a bit of a misconception.
Leading usually happens because the bullet doesn't fit the bore correctly or because the lead is too hard to "obturate" (expand) and seal the barrel. When the powder ignites, the base of the bullet needs to swell slightly to seal the gases behind it. If the bullet is too hard, those hot gases blow past the sides, melting the lead and depositing it on your rifling. For the relatively low pressures of the 45-70, a medium-hardness bullet often works better than a rock-hard one.
The powder coating revolution
In recent years, we've seen a huge shift toward powder-coated 45-70 cast bullets. If you haven't tried these yet, they're a game-changer. Basically, the lead bullet is baked with a thin polymer coating. This acts as a dry lubricant, virtually eliminating leading and allowing you to push the bullets to slightly higher velocities than traditional wax-lubed lead.
It also makes handling the bullets much cleaner. No more sticky fingers or greasy reloading dies. You can get them in all sorts of colors, which is mostly just for fun, but the performance benefits are very real. It's a modern twist on a classic design that makes the whole experience a lot more user-friendly.
Loading tips for cast lead
Loading 45-70 cast bullets requires a slightly different touch than loading jacketed ones. For starters, you'll want to make sure you use a proper "flare" or "expand" on the case mouth. Because lead is softer than copper, it's easy to shave off a little bit of the bullet's side if the case mouth is too sharp. A nice, gentle bell on the brass ensures the bullet seats cleanly.
Crimp is also vital, especially for lever guns. Since the cartridges sit end-to-end in a tubular magazine, the recoil can actually push the bullets deeper into the cases if they aren't crimped tightly. A good heavy roll crimp into the bullet's cannelure or grease groove will keep everything in place. Just don't overdo it, or you might distort the bullet and hurt your accuracy.
Match the bullet to your rifle type
It's important to remember that not all 45-70 rifles are created equal. You generally have three "tiers" of rifles: the old Trapdoor Springfields (and their modern reproductions), the Marlin/Henry lever actions, and the high-strength bolt guns or Ruger No. 1s.
When picking out 45-70 cast bullets, you need to keep your rifle's strength in mind. A Trapdoor needs softer lead and much lower pressures. A modern Marlin can handle a bit more "oomph" and harder alloys. If you're shooting a Ruger No. 1, you can push those cast bullets to levels that would make an old-timer's eyes pop out. Always double-check your load data to make sure it's appropriate for the specific rifle you're holding.
Final thoughts on the lead experience
At the end of the day, shooting 45-70 cast bullets is about more than just ballistics. It's about the "thump" you feel in your shoulder, the distinct puff of smoke (especially if you're using traditional lubes), and the connection to a century-old shooting tradition. Whether you're casting them yourself over a pot in the garage or buying high-quality pre-cast options from a local shop, lead just works.
It takes a little more attention to detail to get the sizing and hardness right, but the rewards are worth it. There's a certain pride in showing up to the range with a box of handloads that shoot one-hole groups, knowing you've tuned that specific lead projectile to work perfectly with your rifle. So, if you've been sticking to the expensive factory stuff, maybe give some cast lead a try. Your rifle—and your wallet—will probably thank you.