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Big Horn Armory Takedown M89 .500S&W—Powerful Innovation

Talyn

Emissary
Founding Member
Looking for a rifle with great handling characteristics, near perfect balance, sights unerringly aligned as soon as the buttstock touches your shoulder. A large extractor mated to a rimmed cartridge for reliability. Over five round capacity. Powerful enough for any game animal on the planet while still avoiding "retina detaching recoil.” It should be of the Big Horn Armory (BHA) M89 Take-down, chambered in .500S&W.

https://midsouthshotreport.com/2026/07/23/big-horn-armory-takedown-m89/?

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BHA chose M89 nomenclature in respect to the Browning designed M86 and M92 lever actions. The M89 is larger in scale than Browning’s legendary levers to accommodate the sausage sized .500S&W.

The M89 is Big Horn Armory’s proprietary design made in Wyoming using modern CNC-machining techniques then hand assembled. There are no cast parts in the rifle. BHA components are cut from stainless steel bar stock. Black walnut furniture accentuates the dark metal finish applied.

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The BHA M89 Take Down a row of splines runs the full height of the receiver for the barrel section to interacts with. This design resists movement in all directions almost as if it were a single piece of steel. This is different than most other take down levers which use interrupted thread for securing rifle sections together.

BHA has tested M89 Take Down prototypes with over pressured proof loads.

The M89 Take Down is simple to breakdown and reassemble. Just mate the splines of the connecting barrel forend to the receiver by pushing upward into alignment and screw the ring nut counterclockwise for assembly and clockwise for break down via knurled knob at the end of the magazine tube.

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The BHA M89 Take Down features a stout 18-inch barrel. It takes a lot of metal to allow for a ½-inch hole to be bored out. Weight is 8-pounds and measures 37-inches long.

A Skinner rear aperture peep sight mated with enhanced visibility front post. Installing a scope rail in front of the receiver is an option from BHA.

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I like it but 4000 bucks? :eek: It's shoots cannon fodder, @TEXASforLIFE gonna be all over this one.
NOPE!!! Don't like the top eject! I thought about it as it would be hard hitting flatter shooting than the 45-70, but still nope! 500automax is on my list. Rimless 500mag for AR's and uses 500mag data. IIRC it uses the same dies but has 308win face (.470"). Depending on this year goes I'll get the 500auto, but if not it'll be next year.
 
A company in AZ makes a 45-70 rimless cartridge for AR's also. That might be fun. Probably just buy a complete upper instead of paying $4,800

 
I like the idea of using the 500 in a rifle, best use for it. An old trapper/gun wrench/adventurer of Alaska named Johnson living near Johnson's landing already worked his version of this on Winchester 71s. He used surplus 50 cal machine gun barrels and reformed 348 brass to a new 50 Johnson for the big bears with cantankerous attitudes in the area.

Apparently it was quite effective from the writings of some of the guides and outfitters of the time and later. I believe it was Phil Shoemaker that wrote the article for Rifle magazine, when I first read about the conversion. But that's been about 35 years since I read that.

The .50 Alaskan / 13x53mmR is a wildcat cartridge developed by Harold Johnson and Harold Fuller of the Kenai Peninsula of Alaska in the 1950s. Johnson based the cartridge on the .348 Winchester in order to create a rifle capable of handling the large bears of Alaska. (Wikipedia)
 
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