During the 1919 National Matches at Caldwell, N. J., Winchester Repeating Arms Co. introduced prototypes of a new cal. .22 bolt-action smallbore target rifle which bore the factory code number G52R. Winchester employee Thomas C. Johnson had been issued patents on both the rifle and the curved 5-shot box-magazine to which it was adapted. Designated Model 52, first commercial Droduction was in 1920. In
1924 an improved model was introduced which incorporated a better stock design, but with no changes in action or barrel. The Model 52 was first made with heaw barrel in 1927.
In 1929, a much-improved version was offered featuring speed-lock ignition, improved sights, and improved stock with semi-beavertail fore-end. Shortly thereafter parts kits were made available to modernize the original 4slow-lock' action to the newer speed-lock type.
The Model 52 Sporting rifle with lightweight barrel and sporting stock was authorized in 1934. This model was discontinued in 1959.
The Model 52B rifle was introduced in 1937. It incorporated several changes, including re-designed trigger, pivoted safety lock on right side of receiver forward of bolt handle, and new speed-lock mechanism. Stock for the standard-barrel model was re-designed, and the heavy-barrel model was furnished with the new style Marksman stock.
In 1951 the Model 52B was superseded by the Model 52C with new Micro-Motion trigger, improved Marksman stock, and improved barrel band. General specifications were the same as the Model 52B. As a matter of interest, serial numbers of the Model 52C began with gun #75,550. Production of the Model 52C was discontinued in 1961 at which time it was replaced with the Model 52D.
2. Receiver sight base plug screw (2)
3. Breech bolt guide
5. Telescope sight rear mount base
6. Telescope sight rear mount base screw (2)
7. Telescope sight front mount base
8. Telescope sight front mount base screw (2)
9. Front sight base plug screw (2)
10. Barrel band
11. Barrel band lug
12. Barrel band screw
13. Barrel band screw escutcheon
14. Tang screw
15. Tang screw escutcheon
16. Housing screw
17. Breech bolt handle locking plunger
18. Breech bolt handle locking plunger spring
19. Breech bolt handle locking plunger pin
20. Housing (complete assembly)
21. Housing retaining pin
22. Safety lever
23. Safety lever spring
24. Breech bolt lock
25. Breech bolt (complete assembly)
26. Magazine holder
27. Magazine holder screw, rear
28. Magazine holder screw, front
29. Magazine catch
30. Magazine catch pin
31. Magazine catch spring
34. Resilient spacer (3)
35. Magazine release plunger
36. Magazine release plunger escutcheon
37. Stock abutment plate
38. Stock screw bushing
39. Stock screw
41. Guard plate
42. Guard screw
43. Forearm adjustment base
44. Forearm adjustment front swivel bow & screw
45. Forearm adjusting swivel base
46. Forearm adjusting swivel bow base screw
47. Forearm adjusting swivel bow
48. Forearm adjustment base screw (rear)
49. Forearm adjustment base screw escutcheon
50. Forearm adjusting bow screw escutcheon
52. Buttplate screw (2)
53. Stock swivel
54. Stock swivel screw (2)
Fig. 1. Breech bolt assembly parts list
A. Breech bolt
B. Extractor, left
C. Extractor, right
D. Extractor pin (2)
Breech bolt can be disassembled by clamping body of brcech bolt (A) firmly in a vise. Breech bolt handle (H) is drawn back far enough to expose firing pin guide pin (G). Drift out pin with a punch, leaving punch in place through hole. Remove firing pin plug (L). Spring (K) may be released by removing
. Breech bolt handle Firing pin . Firing pin spring . Firing pin plug punch, but care should be taken to prevent forcible expulsion of spring from firing pin. Remove firing pin and breech bolt handle (H) to rear. In reassembly, firing pin spring (K) must be forced forward of pin hole in breech bolt with blade of screwdriver or similar tool to permit re-entry of pin.
Fig. 1. Breech bolt assembly parts list
E. Extractor spring, left J.
F. Extractor spring, right K
G. Firing pin guide pin L
To remove bolt, check to be sure chamber is empty, then close bolt and pull trigger. Push forward on trigger and draw bolt rearward out of receiver. When withdrawing bolt, lift rear of bolt up slightly to clear comb of stock.
To reassemble bolt to receiver, slide bolt into receiver with flat side down. Align lug on underside of bolt handle with slot in receiver. While holding trigger back, push bolt all the way forward into receiver.
To disassemble barrel and receiver from stock, remove barrel band screw (12), tang screw (14), and stock screw (39). Lift bar rel and receiver up out of stock (33).
Magazine holder (26) is removed by unscrewing magazine holder screws (27 & 28). Remove breech bolt guide (3) from top of receiver. To remove complete trigger housing assembly (20), unscrew housing screw (16) from top of receiver and drift out housing retaining pin (21). Drop housing down out of bottom of receiver. Safety lever spring (23) is easily removed from housing by lifting its front end out of slot at front edge of housing. Safety lever (22) and breech bolt lock (24) can be lifted up off pins in housing. Reassemble in reverse order. ■
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