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Ruger Model 77

Ruger · Rifle

Ruger Model 77

Bolt action · .270 Winchester · introduced 1968

Also known as Ruger M77, M77 Mark II

About the Ruger Model 77

The Ruger Model 77 is a Mauser-influenced bolt-action sporting rifle introduced in 1968, designed by L. James Sullivan and Harry Sefried under Bill Ruger. It was one of the first new American commercial bolt actions to deliberately revive Mauser-style features at a time when push-feed economy actions dominated. Notable for an investment-cast receiver, Ruger's signature integral scope-mount bases, and Sullivan's angled front action screw that draws the barreled action down and rearward into the stock for consistent bedding. The 1991 M77 Mark II added true controlled-round feed and a three-position safety before the line was superseded by the Hawkeye in 2006.

The M77 was designed by Jim Sullivan, the same engineer behind the AR-15 and Stoner 63 military rifles, making it a rare crossover of military small-arms talent applied to a sporting bolt action.

Ruger Model 77 specifications

General

Type
Rifle
Action
Bolt action
Firing mechanism
Striker-fired
Trigger
Single stage
Calibres
.270 Winchester, .22-250 Remington, .30-06 Springfield, .308 Winchester
Magazine capacity
4 rounds
Magazine
Internal

Dimensions

Barrel length
559 mm (22.0 in)
Overall length
1067 mm (42.0 in)
Weight (empty)
3.18 kg (7.01 lb)

Barrel

Rifling twist
1:10 in (254 mm)
Rifling
Right hand
Grooves
6

Materials

Barrel
Steel
Receiver / frame
Steel
Stock
Wood
Finish
blued

Performance

Muzzle velocity (typical)
905 m/s (2969 fps)
Muzzle energy (typical)
3715 J (2740 ft·lb)
Effective range
460 m

History

Introduced
1968
Discontinued
2006
Production status
Discontinued
Country of origin
US
Designer
L. James Sullivan

Available calibres

.270 Winchester.22-250 Remington.30-06 Springfield.308 Winchester

Features

  • Integral scope mounts
  • Ruger rings included
  • Angled front action screw
  • Investment cast receiver
  • Hinged floorplate
  • Mauser style extractor

Safety

  • Tang safety

The original 1968 M77 had a Mauser-style claw extractor but functioned as push-feed with a plunger ejector and used a two-position tang safety. True controlled-round feed and the three-position safety arrived only with the 1991 M77 Mark II. Magnum (RSM) variants chambered dangerous-game rounds up to .416 Rigby and .458 Lott.

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