Winchester Model 52: Covering numbers: 1 - 125451. Please enter a serial number and click the submit button. Serial numbers assigned in chronological order. For 1927-1944 year of manufacture date codes, see 'Spanish Year Of MFG. Date Codes' in this section. # end 1999Since 1968-1969 was a transition period in Browning 0001 1999 -1- 222509.

• Winchester Model 52 Serial Number Dates
• Winchester 52 Serial Number Date
• Winchester 52 Serial Number Dates

1. Manufacture Dates. Pre-1899 Antique Serial Numbers (From Empire Arms. Use at own risk.). WINCHESTER DATES OF MANUFACTURE. Model 52 Model 54.
2. The serial number listings by month presented below were developed by Scott Duff, a recognized authority on and author of a series of books on the M1 Garand.The following information can be found in the books 'The M1 Garand: WWII' and 'The M1 Garand Serial Numbers and Data Sheets' found at Fulton Armory, and are used here with Mr. Duff's permission.

Action

• Speed Lock (1930): Frank Burton replaced Johnson's military-style compound-motion trigger, hung from the sear, with a new trigger with a low pivot and rear sear notch, reducing trigger travel by 75% and providing for set-screw pull-weight adjustment. In addition, Burton redesigned the firing pin so as to reduce its travel from approximately .5' (12mm) to .125' (3mm): all of which resulted in a much faster lock time and greater accuracy. At this time the original model's knurled cocking-piece disappeared, replaced by a short trapezoidal boss. This and all subsequent M52 actions cocked on opening, like a Mauser. Burton carefully designed the Speed Lock to fit the existing receiver and bolt body without modification. Winchester for some years offered a conversion kit for older 'slowlock' 52s.

• Model 52A (1935, not so marked until 1936): It had been observed that the safety pivot stem was prone to bending, and would then put sideways pressure on the bolt which could cause the relatively thin metal behind the left locking lug to crack. Therefore the safety stem was shortened by .08 inches, eliminating the bending problem and allowing the left rear receiver wall to be made thicker. Having two slightly different safeties and receiver forgings resulted in some confusion on the assembly line, so beginning in June 1936 the modified receivers were stamped with xxxxxA serial numbers. There was otherwise no difference from the 'pre-A' Speed Locks.

• Single-shot Adapter (1935): Not a design change so much as an accessory, the Adapter was effectively a dummy magazine with a shaped top, to facilitate manual loading.

• Model 52B, 'Improved' Speed Lock (1937): Laudensack replaced the original left-mounted wing safety with a more convenient sliding-plate safety on the right side of the receiver. The 52B design also raised the left receiver wall abreast the magazine higher than the right, whereas on earlier versions both sides were flush with the loading platform. Laudensack also modified the Speed Lock mechanism, including the addition of an adjustable trigger-return spring and a sprung sear-disengagement plunger. Unfortunately this revised Speed Lock proved immediately unpopular, most shooters considering it to have excessive vibration and creep compared to the original—-- as well as to the 'Miracle Trigger' of the new Remington 37, the 52's first serious American competitor.

• 'Round-top' receiver (1937): The original Model 52 had a flat milled in the top of the receiver bridge with a dovetail machined into it for sight mounting. The 1934 Sporting Model had the receiver left round; in 1937 this became an option on target models as well. The 'flat-top' was discontinued in 1946 (none had actually been made since 1941) and all postwar 52's had the round-top form.

• Model 52C (1951): During the wartime hiatus the Post-War Production Recommendation Committee proposed that when Model 52 manufacture resumed, the poorly-received Style B trigger should be replaced with a completely new design. In the event, Winchester returned to the 52B when the war ended, but in the meantime an extensive (and time-consuming) scientific study of lock mechanisms was undertaken. The result was Harry Sefried's two-lever Micro-Motion trigger, introduced in 1951. Adjustable for pull-weight between 2.5 and 6 lbs, and travel between .030 and an almost imperceptible .003 inches, the Micro-Motion was an instant success, and considered the new state of the art in match rifle trigger locks.

• Model 52D (1961): In 1956 the US Olympic rifle team commissioned ten custom Model 52C's for the upcoming Melbourne Games. These became the prototypes for the Style D when Winchester elected to redesign the entire rifle literally lock, stock, and barrel. The 52D action differed from its predecessors in being a single-shot: eliminating the magazine aperture in the receiver base rendered the entire assembly stiffer and (theoretically) more accurate. There was also a new Micro-Motion trigger lock based on the Style C but with different geometry, and adjustable to as little as one pound. On the International Match version (1969), a trigger assembly by master gunsmith Karl Kenyon or an ISU set-trigger were offered as alternatives to the Winchester trigger.

• Model 52E (1969): The Model 52E was a D-model with the receiver milled to accept an aluminum bedding block/recoil lug (only installed on the International Match, 3-Position and Prone versions), and which had, for the first time on a 52 target model, telescope mounting holes drilled and tapped in the forward receiver. The loading feed geometry was also slightly tweaked from that of the Style D, and on later production the bolt handle was flattened. Winchester catalogs of the time listed all Model 52s as either 52Ds or as 'International' models; arguably the '52E' never existed as a separate Style, but arose from the E-prefixed serial numbers mandated by the Gun Control Act of 1968.

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