Thompson Center Maxi Ball .50 Black Powder 370gr, 20/Pack

Description

You’re at the range, the familiar scent of burnt powder in the air, and you’re looking for a projectile that delivers consistent, hard-hitting performance without the premium price tag of boutique offerings. For the budget-conscious muzzleloader hunter or shooter, finding that balance of quality and cost is key. That’s where a proven, mass-produced option like the Thompson Center Maxi Ball .50 Black Powder Maxi-Ball 370gr, 20/Pack comes into play. Let’s break down what you get for your money.

The Thompson Center Maxi Ball .50 Black Powder Maxi-Ball 370gr, 20/Pack is a 20-count package of .50 caliber, 370-grain lead conical bullets designed for use in black powder rifles. These are pre-lubricated, ready-to-load projectiles engineered for deep penetration and stable flight, offering a practical and cost-effective alternative to round balls or more expensive custom conicals for hunting and target shooting.

So, what are you actually getting in this pack? These are heavy, solid lead conicals. The 370-grain weight provides substantial knockdown power for medium to large game, making them a serious contender for deer, elk, or bear within the effective range of your muzzleloader. The design includes deep lubrication grooves, which are pre-filled with a black powder-compatible lube. This serves a critical function: it helps keep fouling softer during a shooting session, which can aid in loading subsequent shots and maintaining accuracy. The pointed tip and long bearing surface are engineered for aerodynamic stability and consistent engagement with the rifling.

Here’s the thing—these aren’t hand-crafted, swaged match bullets, and they aren’t priced like them. At $34.96 for a pack of 20, you’re looking at a per-shot cost that makes regular range time or sighting-in sessions far more economical. You’re trading some potential for ultra-precision benchrest accuracy for rugged reliability and a price point that doesn’t make you wince. For many hunters, the minute-of-deer accuracy these provide is more than sufficient, and the savings can be redirected towards powder, primers, or range fees.

Product Specifications

Specification	Detail
Caliber	.50
Bullet Type	Lead Conical (Maxi-Ball)
Bullet Weight	370 Grains
Quantity	20 per pack
Lubrication	Pre-lubricated
Primary Use	Hunting & Target Shooting

Let’s talk pros and cons. The major advantage is straightforward value. You get a hard-hitting, game-capable projectile without a fancy price tag. They are drop-in ready—no need to pan-lube or mess with grease cookies. The heavy weight delivers excellent penetration. On the downside, being a mass-produced conical, there can be minor weight variances or casting seams compared to premium offerings. They also require a stout powder charge to obturate (seal the bore) properly, which can mean more recoil than a lighter round ball load. That said, for the cost, the performance is tough to beat.

This pack is for the practical muzzleloader enthusiast. It’s for the Missouri whitetail hunter who needs reliable terminal performance at woods distances. It’s for the shooter who wants to practice with the same projectile they hunt with, without breaking the bank. These Maxi-Balls are famously compatible with Thompson Center’s own rifles, like the Omega or Triumph, and perform well in other modern in-line .50 caliber systems from brands like CVA and Traditions. They offer a classic conical experience with modern convenience.

Frequently Asked Questions

Q: What powder charge should I use with these 370-grain Maxi-Balls?

A: Always consult your rifle’s manual first. Generally, for modern in-line muzzleloaders, a charge between 90 and 120 grains of black powder or equivalent substitute is common to ensure proper obturation and performance. Start at the lower end and work up while monitoring for accuracy and pressure signs.

Q: Can I use these in a .50 caliber percussion cap rifle with a traditional rifling twist?

A: Yes, they can be used. However, the slower twist rates of some traditional rifles (like 1:66″) are often optimized for round balls. You may need to experiment with powder charges to achieve optimal stability and accuracy with a heavier conical like this.

Q: Do I need to use a patch or sabot with these bullets?

A: No. The Thompson Center Maxi Ball is designed to be loaded directly onto the powder charge. The bullet’s oversized diameter and lubrication grooves create the seal against the bore. Using a patch or sabot would be incorrect and potentially dangerous.

If you’re stocking up for the upcoming season or just want an affordable, effective projectile for your .50 caliber muzzleloader, this 20-pack provides solid value. This product is available at firearms-missouri.com for Missouri residents and nationwide where compliant. See if they fit your needs for the year.