RIFLE: MOSSBERG MODEL ATR, SERIAL NUMBER ATR049144, BLUE / CCH, YES - INCLUDES HARD PROTECTIVE CASE, BOLT, 30-06 SPRINGFIELD, 21 Notes: MOSSBERG ATR 30-06 The Mossberg 100 ATR in .30-06 Springfield is a straightforward, budget-oriented bolt-action hunting rifle made by O.F. Mossberg & Sons. "ATR" stands for All-Terrain Rifle. The model is now discontinued, but Mossberg still provides an ATR owner's manual through its support site. Key characteristics Action: Bolt-action, push-feed Caliber: .30-06 Springfield Magazine: Typically a 4-round internal magazine, with the exact configuration varying by version Barrel: Commonly 22 inches Weight: Around 6 1/2-7 lb depending on configuration Stock: Synthetic, walnut, and camouflage versions were offered Purpose: Primarily a general-purpose big-game hunting rifle Optics: Configurations were available with scope-mounting provisions rather than being a specialized precision rifle. What the .30-06 gives you The .30-06 Springfield is a long-established hunting cartridge capable of handling a broad range of North American big game with appropriate ammunition. In an ATR, it makes the rifle suitable for deer and larger game where legal. The tradeoff is that .30-06 produces noticeably more recoil than cartridges such as .243 Winchester or .308 Winchester, particularly in a relatively light rifle.