Heym SR 30
| Heym SR 30 | |
|---|---|
| Type | Straight-pull bolt action rifle |
| Place of origin |  Germany |
| Production history | |
| Designer | Peter Fortner junior |
| Produced | 1998-current |
| Variants | Classic, Classic Keiler, Premium, Classic Concord, Super Classic, Royal, Grand Royal |
| Specifications | |
| Mass | 3.1-3.6 kg |
| Length | 1110-1140 mm (overall), 500-610 mm (barrel) |
| Cartridge | Several, see below. |
| Action | Roller locked straight pull |
| Sights | Open sights, or prepared for scope mount |
Heym SR 30 is a straight-pull rifle produced in Germany by Heym. The rifle is also available in a left hand version.[1]
Locking mechanism
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]
Calibers
The rifle is available in the two main configurations SR 30 N (normal calibers) and SR 30 G (larger calibers).
- Normal action
- The Heym SR 30 N is available in the calibers .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 in the calibers 6.5×68mm Schuler, .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 lengthfor the calibers .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
- ^ Heym SR30 Straight Pull Rifle - Revivaler
- ^ Heym Prospekt 7.03
- ^ Heym SR 30 Repetierbüchse mit RWS HIT im Praxis-Test - all4shooters.com
- ^ Straight to the point | Sporting Rifle magazine
- ^ a b c d Heym SR30 Straight Pull Rifle - Revivaler
- ^ Endverbraucher Heym 2019
- ^ Heym SR30 straight-pull rifle review review - Shooting UK
- ^ HEYM High-Performance Precision Rifle (HPPR)