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The Buffalo Bore 4D20 Heavy Strictly Business represents the upper limit of what you can push through a .44 Magnum revolver. This is not a round for casual shooting—it's built for those running firearms specifically rated for +P+ pressures and want the absolute maximum from their gun.
When you load one of these into a revolver, you're getting a 340-grain lead flat-nose bullet traveling at 1425 feet per second with 1649 foot-pounds of muzzle energy. That's a serious step up from standard .44 Magnum loads. The flat-nose design is crucial here—it maintains a straight trajectory through tough material and delivers devastating penetration. You can expect deep, consistent penetration through flesh and bone without the rapid energy loss you'd get from an expanding bullet.
Buffalo Bore is very clear about this: the 4D20 is designed ONLY for certain revolvers. That list includes Ruger Red Hawk, Super Red Hawk, Super Blackhawk, and Vaquero; Freedom Arms Model 83; Taurus Raging Bull; Colt Anaconda; and Dan Wesson revolvers. It also works in rifles like the T/C Encore, Winchester 1894, Handi-Rifle, and other falling-block actions. If your gun isn't on that list, don't use this ammunition—the pressures are too high and the gun won't handle it safely.
Buffalo Bore loads this ammunition to maximum SAAMI specifications, meaning you're getting real, over-the-counter performance from actual handguns, not inflated numbers from laboratory test barrels. The brass cases are new production, non-corrosive, boxer-primed, and reloadable if you decide to go down that road. The heavy 340-grain bullet sits at the practical upper weight limit for the cartridge, giving you serious momentum on impact.
This ammunition is designed exclusively for specific revolvers: Ruger Red Hawk, Super Red Hawk, Super Blackhawk, and Vaquero; Freedom Arms Model 83; Taurus Raging Bull; Colt Anaconda; and Dan Wesson revolvers. It also works in select rifles including T/C Encore, Winchester 1894, Handi-Rifle, and falling-block action rifles. A modified Marlin 1894 with a 1:20 twist rate is acceptable. Do not use this ammunition in any other firearm, as pressures will exceed safe limits.
The flat-nose design is built for deep, straight-line penetration. You can expect three or more feet of penetration through normal flesh and bone. The flat nose maintains its trajectory through tough material without the rapid energy loss of expanding bullets, making it effective on large game.
Yes. The 4D20 comes in new production, non-corrosive, boxer-primed brass cases that are reloadable. This allows you to reload these cases according to standard reloading practices if you choose to do so.
The +P+ rating means this ammunition is loaded to maximum SAAMI pressures, delivering significantly more power than standard .44 Magnum rounds. The 1425 fps velocity and 1649 ft-lbs of energy represent a serious step up in performance. Buffalo Bore tests these loads in real-world firearms, not laboratory test barrels, so the published numbers are what you'll actually get when you shoot them.
| Caliber/Gauge | .44 Magnum |
|---|---|
| Case Material | Brass |
| Cost per Round | 2.35 |
| Grains | 340 gr |
| Manufacturer | |
| Manufacturer Part Number | 4D20 |
| Units per Box | 20 |
| UPC | 651815004242 |
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