Knowing the details of once your rifle to be manufactured and what manufacturing generation your rifle is native is essential knowledge because that every version 70 owner. Even if it is you space buying parts, or just trying come understand exactly how your rifle fits right into the version 70 family of rifles, it starts with knowing when it to be made. This Campfire article explains how to uncover your rifle"s location in design 70 manufacturing history.

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A manufacturing facility original and all correct form I-1 rifle native 1936

Pre-64 model 70s are frequently classified into one the three production groupings, framed about WWII. These groups are "pre-war" and also "post-war", v a small variety of rifles between these two groups referred to together "transition" rifles. In Winchester parlance, these 3 groupings of rifles are referred to as "Type I", "Type II" and "Type III" rifles.

Production PeriodApproximate serial number rangeNotable characteristics

Pre-WarorType I

1-66350A receiver featuring a cloverleaf tang, a clip-loading slot, and also a recessed and also roll-marked behind bridge. Also present is a distinctive flag shaped safety lever and also a stepped bolt manage shaft.
TransitionorType II66350-87700A receiver with a mix the pre-war & post-war characteristics - often a cloverleaf tang, but always a non-recessed rear bridge. No clip loading slot. No action on the bolt handle. Some transition rifles have a unique paw-shaped security lever.

Post-WarorType III

87700-581471These rifles have a tapered oval recipient tang and a non-recessed rear leg which is drilled and tapped for a scope. This rifles likewise have the dog-leg shaped safety lever still uncovered on existing model 70s.

While this three wide production periods can be a valuable frame of reference to differentiate between major production eras, you will certainly need extr information to totally understand her rifle.

Within the three major groupings above, over there is a much more refined break down of the model 70 i m sorry takes note of many minor format changes. These sleek groupings divide the pre-64 design 70 into ten sub-types

GenerationApproximate serial number range1Distinctive features 
Type I
Type I-11-3600A square, un-beveled magazine release button
Type I-23600-8850Changed from square magazine release button to beveled
Type I-38850-20500Added the security retaining pin to the bolt sleeve
Type I-4 (Std)20500-66350Changed indigenous carbonia charcoal blued receiver to bead blasted black oxide bluing
Type I-4 (H&H)20500-63200Changed indigenous carbonia charcoal blued receiver to bead blasted black oxide bluing
Type II
Type II-1 (Std)66350-87000Clip loading slot eliminated2. Recipient bridge readjusted to smooth 
Type II-1 (H&H)63200-87000Receiver bridge changed to smooth 
Type II-2 (Std)87000-87700Changed come dogleg safety and bolt handle modified for safety and security clearance
Type II-2 (H&H)87000-1217003Changed to dogleg safety and also bolt take care of modified for safety clearance
Type III
Type III-1 (Std)87700-180000Receiver tang change from cloverleaf come rounded / tapered through bridge drilled and also tapped for a scope4
Type III-1 (H&H)121700-180000Receiver tang adjust from cloverleaf come rounded / tapered 
Type III-2180000-225000Bolt release readjusted from notched come rounded
Type III-3225000-445000Hole added to bottom of bolt handle knob
Type III-4445000-581471Right side of bolt sleeve changed to rounded

1 Serial numbers represent once the readjust was an initial introduced. It is common for older attributes to proceed to appear until existing components were depleted, causing some overlap the features.2 Clip loading slots were kept on nationwide Match/Target Model/Bull total receivers in 30-06 only.3 from 1948 come 1949 the serial numbers of kind II-2 and III-1 H&H magnum plot overlapped.4 The bridge of H&H size actions was not consistently D&T for scope mounting until late 1950, well into form III production.

A final reference suggest which is important for you come know about your rifle is the production year.

Most Winchester manufacturing facility records for the version 70 have been shed or destroyed, which way there is less production information available for the version 70 보다 for many other Winchester rifles. What records perform exist leave part room for interpretation about the specific production date of any type of given pre-64 version 70.

In the lack of factory records, it might seem reasonable to regard the date stamp under the room area of the barrel together a method to day a rifle (these stamps were present on the design 70 until 1956). However, this stamps indicate the year that barrel production only, and also not the rifle. Barrel production preceded the rifle and these barrel dates typically precede the manufacture day of the rifle by a year, and sometimes by plenty of years.

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This 1933 stamped barrel was ceded from the manufacturing facility on a 1942 rifle

The overcome reference below provides an estimated production day by serial number, based on model 70 polishing room room records. Polishing room records documented when every receiver to be polished and are the most finish model 70 documents in existence. However, sprucing up was just one step in production, and not the final step. As a result, the polishing room days somewhat head the day each rifle to be completed and also ready to leave the factory. The list listed below is based upon polishing room records, but adjusted based on other easily accessible information to carry out a an extremely close estimation of when any type of given rifle left the Winchester factory. 

YearSerial number rangeQuantity produced
19361 - 22382238
19372239 - 115739335
193811574 - 178446271
193917845 - 239916147
194023992 - 316757684
194131676 - 4175310078
194241754 - 492067453
194349207 - 49983777
194449984 - 4999714
194549998 - 50921924
194650922 - 583827461
194758383 - 7567517293
194875676 - 10168026005
1949101681 - 13158029900
1950131581 - 17315041570
1951173151 - 20662533475
1952206626 - 23882032195
1953238821 - 28273543915
1954282736 - 32353040795
1955323531 - 36102537495
1956361026 - 39359532570
1957393596 - 42528331688
1958425284 - 44079215509
1959440793 - 46504024248
1960465041 - 504257 39217
1961504258 - 54544641189
1962545447 - 56559220146
1963565593 - 58147115879

In a future Campfire article, we will dig into the wide selection of design 70 rifles Winchester manufactured and also will cover exactly how to determine the Winchester magazine codes because that each of her rifles.