The .360 Buckhammer, also called 360 BHMR (9.1×46mmR), is a SAAMI-standardized[2] straight-walled rifle cartridge developed by Remington Arms Company.

At the 2023 SHOT Show in Las Vegas, Nevada, the .360 Buckhammer cartridge was introduced by Remington Arms.

.360 Buckhammer's parent case is the .30-30 Winchester, necked-up to use the same .358-caliber bullets as the .35 Remington and .35 Whelen.

[4] .360 Buckhammer also addresses a rapidly growing market segment known as "straight-wall-cartridge-compliant" deer-hunting states.

A growing number of states that previously restricted deer hunting to limited-range slug guns or muzzle-loading firearms are now allowing rifles chambered in straight-walled centerfire cartridges with a maximum case length of 1.8 in (46 mm).