Description
There are big bore revolvers, and then there is the BFR Rolling Thunder. Magnum Research took their long cylinder Big Frame Revolver, chambered it for the legendary .45-70 Gov't rifle cartridge, and trimmed the barrel down to 3 inches. The result is a five shot single action that delivers rifle-class energy from a package short enough to wear on your hip all day. If you spend time in bear country or just want the most memorable wheelgun at the range, this one has a way of ending conversations.
Built Like Every BFR: All Stainless, All American
Every Rolling Thunder comes out of Magnum Research's shop in the United States, machined from stainless steel and designed as a magnum from the ground up rather than a beefed-up standard frame. The barrel is cut rifled, an old-school process that produces excellent accuracy with both cast lead and jacketed bullets, which matters in a caliber where many favorite loads wear hard cast flat nose bullets. The silver brushed finish shrugs off weather, and the black grips give it a clean, classic two-tone look.
Why a 3 Inch .45-70 Revolver Makes Sense
A snub barrel on a cartridge this size sounds like pure fun, and it is, but there is a practical side too. Guides and backcountry hunters have gravitated toward short barreled big bores because a compact revolver is the gun you always have on you when things get western. You give up some velocity compared to the 7.5 or 10 inch BFRs, but heavy .45-70 loads still hit with authority well beyond what most defensive revolvers can offer. Fixed sights keep the profile snag free, and the frame comes drilled and tapped if you decide to run an optic later.
Owning the Rolling Thunder
This is a specialist's revolver with real character. The single action lockwork keeps things simple and strong, the five round cylinder is sized for the long .45-70 case, and recoil with full-power loads is part of the experience. Feed it trapdoor-level or cowboy loads and it turns into a surprisingly pleasant range gun. Either way, it draws a crowd every time the cylinder swings open.
Key Specifications
- Manufacturer: Magnum Research
- Model: BFR Rolling Thunder
- Manufacturer Part Number: BFR4570-CT
- UPC: 761226090489
- Caliber: .45-70 Gov't
- Action: Single Action Revolver
- Barrel Length: 3 in, cut rifled
- Capacity: 5 rounds
- Frame: Long cylinder BFR, stainless steel
- Finish: Silver / brushed stainless
- Grips: Black
- Sights: Fixed
- Optic Ready: Drilled and tapped
- Weight: 4.97 lbs (shipping weight)
- Country of Origin: USA
What’s Included
- Magnum Research BFR Rolling Thunder revolver
- Hard case
- Owner's manual
Frequently Asked Questions
How hard does the BFR Rolling Thunder kick in .45-70?
It depends entirely on the ammo. Full-power hunting loads with heavy hard cast bullets deliver stout, memorable recoil, which is expected from a 3 inch .45-70. Load it with trapdoor-level or cowboy ammunition and it becomes a genuinely manageable, fun revolver to shoot for extended range sessions.
What is the Rolling Thunder best suited for?
This configuration shines as a trail and backcountry sidearm where dangerous game is a possibility. The 3 inch barrel makes it far easier to carry in a chest or belt holster than the longer BFR models, while heavy .45-70 loads still deliver serious energy. It also makes a fantastic range gun for anyone who appreciates big bore wheelguns.
Can I mount an optic on this BFR?
Yes. The Rolling Thunder ships with fixed sights for a snag-free profile, but the revolver is drilled and tapped from the factory. That gives you the option of adding a mount and red dot down the road without any gunsmithing.
Is the BFR Rolling Thunder made in the USA?
It is. Magnum Research builds every BFR entirely in the United States, and each one passes through their custom shop. The stainless steel construction and cut rifled barrel reflect the same ground-up magnum design philosophy behind the Desert Eagle.





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