Heym SR 30

Heym SR 30 is a straight-pull rifle produced in Germany by Heym. The rifle is also available in a left hand version.[1]

Heym SR 30
TypeStraight-pull bolt action rifle
Place of origin Germany
Production history
DesignerPeter Fortner junior
Produced1998-current
VariantsClassic, Classic Keiler, Premium, Classic Concord, Super Classic, Royal, Grand Royal
Specifications
Mass3.1-3.6 kg
Length1110-1140 mm (overall), 500-610 mm (barrel)
CartridgeSeveral, see below.
ActionRoller locked straight pull
SightsOpen sights, or prepared for scope mount

Locking mechanism
Disassembled bolt of the Heym SR 30.

The mechanism uses 6 ball bearings around the circumference of the bolt head as locking elements. When the bolt handle is pushed forward, it forces a central plunger down the interior of the bolt body, forcing the 6.5 mm (0.256 in) diameter ball bearings out to lock into negative shaped (concave) recesses in the receiver. The plunger retracts when the bolt handle is pulled back, allowing the locking bearing to retract into the bolt body so the bolt can open.

Primary extraction is performed by retracting the bolt handle, which uses leverage from the opposite side of the bolt to swing the handle to the open position, giving a mechanical advantage. The mechanism was designed Peter Fortner junior. Another example of a semi-rigid bolt lock is the Anschütz 1827 Fortner rifle, also designed by Peter Fortner junior.

Heym states they successfully had the SR 30 locking mechanism tested by the C.I.P. accredited Suhl proofhouse loaded up to a pressure of 800.0 MPa (116,030 psi; 8,000 bar).[2][3] The bolt can be classified as a semi-rigid type, since the locking elements are movably mounted on the bolt.

The bolt handle can be placed in three positions: (1) Open, (2) Locked and uncocked, and (3) Locked and cocked.[4]

Trigger

The rifle is offered with two trigger options, either a shotgun style trigger set at 1600 grams or a set trigger set to 1100 grams. To activate the lighter release, the set trigger must be pushed forward.[5]

Cartridges

The rifle is available in the two main configurations SR 30 N (normal cartridges) and SR 30 G (larger cartridges).

Normal action
The Heym SR 30 N is available chambered for .22-250, .243 Win, .25-06, 6.5mm Creedmoor, 6.5×55mm, 6.5×64mm, .270 Win, 7×57mm, 7×64mm, .308 Win, .30-06, 30-06 Ackley Improved, 8×57 JS, 8×64mm S, 8.5×63mm and 9.3×62mm.[5]
Magnum action
The Heym SR 30 G (Groß meaning large) is available chambered for 6.5×68mm, .270 WSM, .300 WSM, 7mm Rem Mag, .300 Win Mag, 8×68mm S, .338 Win Mag and .375 Ruger.[5]
Mini action
The rifle is also available in a smaller Mini Calibre action length for the chamberings .222 Rem and .223 Rem, but this action length is only available in a right handed version.[6]

Barrels

The rifle comes with a hammer forged barrel made in-house at Heym.[7] The SR 30 uses traditional action threads for fixing the barrel to the receiver. Barrel change must be performed by a competent gunsmith, and consists of setting the headspace as well as fitting the recoil lug between the barrel and stock.

Precision

The Heym High Performance Precision rifle variant is guaranteed by the factory to deliver a five shot group of 20 mm at 100 meters (0.2 mrad).[8][5] This is equivalent to 0.72 inches at 100 yd, or just below 0.69 moa.

See also

References
  1. Heym SR30 Straight Pull Rifle - Revivaler
  2. Heym Prospekt 7.03
  3. Heym SR 30 Repetierbüchse mit RWS HIT im Praxis-Test - all4shooters.com
  4. Straight to the point | Sporting Rifle magazine
  5. Heym SR30 Straight Pull Rifle - Revivaler
  6. Endverbraucher Heym 2019
  7. Heym SR30 straight-pull rifle review review - Shooting UK
  8. HEYM High-Performance Precision Rifle (HPPR)
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