The Cheyenne Tactical M-200 Intervention is a high end sniper rifle (usually refered to as the CheyTac M-200). It is chambered for both the .408 Chey Tac or .375 Chey Tac (both custom proprietary calibers created by Cheyenne Tactical). The CheyTac M-200 was designed to fill a need for large caliber sniper weapons that had better ballistics and design elements than the offerings in .50 BMG on the marketplace
CheyTac Intervention .408 (U.S.A.) The CheyTac Intervention an American bolt action sniper rifle manufactured by CheyTac LLC. It is fed by a 7-round detachable single stack magazine. It fires .408 Chey Tac or .375 Chey Tac ammunition. CheyTac LLC states that the system is capable of delivering sub-MOA accuracy at ranges of up to 2,500 yards (2,300 m), one of the longest ranges of all modern-day sniper rifles.