# Gun Barrel Proof Act 1950, Part I: Arms of the First, Second and Third Classes

Extent: E+W+S+N.I.

(see Notes A and B below)
Arms of the First Class
Maximum price per barrel
Nominal Bore
Provisional Proof
Definitive Proof
Special Definitive Proof
4...........................
£8·70
£8·70
£13·5
8...........................
£5·55
£6·60
£9·90
Smaller than 8.........
£3·30
£6·60
£9·90
Arms of the Second and Third Classes
(see Notes A, B, D, below)
Maximum price per barrel
Third Class
Nominal Calibre (in inches)
Second Class
Revolvers See Note C below
OtherArms
Over . 449...............
£5·70
£5·40
£3·15
·449 –370.................
£4·35
£4·70
£2·25
·369–310.................
£3·30
£3·85
£1·95
·309–230
£3·30
£3·30
£1·95
·229 or smaller diameter...........
£3·15
£2·80
£1·95
Certain Arms of the Fourth Class
(see Notes A and B below)
Maximumprice
Cattle killers—
perbarrel
·310 bulleted....................................................
£2·25
·220 and captive bolt..........................................
£1·65
Signal pistols and alarm guns:
1 inch diameter or less........................................
£2·25
1½ inch diameter or more....................................
£3·30

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Source: https://www.legislation.gov.uk/ukla/Geo6/14/3/schedule/n2/schedule/part/I (the official version)
Page: https://openlegislation.uk/gun-barrel-proof-act-1950/schedule-n2/schedule/part-I
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.