Purdey side-by-side sidelock
A self-opening side-by-side built on the Beesley sidelock action
The Sidelock Side-by-Side · UK
Overview
The Purdey side-by-side sidelock is a self-opening gun built on Frederick Beesley’s action.1, 2 Purdey offers square, round and ultra-round action bars, each built to the customer’s requirements.3 Traditional rose-and-scroll engraving usually comes with a colour-case-hardened finish.4
The action uses energy kept in its mainsprings to open the gun, and it cocks as the gun closes.1, 5 Buyers choose double triggers, with an optional hinged front trigger, or a non-selective inertia single trigger.6, 7 The ejectors work on a modified Southgate system.8
Specifications
12-bore
| Lockwork | Beesley self-opening sidelock, cocked on closing1, 5, 6, 7, 8 |
|---|---|
| Trigger | Double triggers, optionally with a hinged front trigger; non-selective inertia single trigger also offered1, 5, 6, 7, 8 |
| Ejectors | Modified Southgate system, dated by Purdey to 18891, 5, 6, 7, 8 |
| Made in | London, United Kingdom9 |
| Introduced | 188010, 1 |
| Bore | 12-bore |
Specifications
| Configuration | Bore | Finish |
|---|---|---|
| 12-bore11 | 12-bore | Bouquet and foliate scroll engraving |
Identify and date
Purdey offers chopper-lump barrels with a choice of five rib profiles and individually cut chokes, and stocks of Turkish walnut with a high-gloss oil finish.12, 13, 14, 15
A 1930s pair reviewed by The Field, Nos. 25459 and 25460, has 29-inch barrels, 2½-inch chambers, concave ribs, straight grips and full splinter fore-ends. Each gun weighs just under 6 lb 8 oz, and the chokes are improved cylinder and three-quarters.16, 2 An 1890 pair from the same magazine has 30-inch barrels, 2½-inch chambers, concave ribs, brush-polished actions and rose-and-scroll engraving. Each of these guns weighs 6 lb 9 oz, and their shortened stocks measure 14¼ inches.17, 18, 19
The Purdey cocks on closing, unlike the Holland & Holland Royal, which cocks on opening and holds its opening spring in a tube beneath the barrels.5 London proof marks sit on the barrel flats and action, and a year mark dates proof or reproof.20, 21 Purdey keeps its records by serial number and issues a two-page History Certificate as a PDF.22, 23
| Where | Markings |
|---|---|
| Game ribs of pair 21276 and 21457 | J. Purdey & Sons, Audley House, South Audley Street, London, England24, 25 |
| Top levers and ribs of pair 21276 and 21457 | 1 and 2, numbering the guns in the pair24, 25 |
| Barrel rib of No. 1 in the matched pair | Made of Sir Joseph Whitworth’s Fluid Pressed Steel24, 25 |
| Barrel flats and action | London proof marks20 |
Proof date
London began marking dates in 1972. LP above 72 denotes 1972, and LP 92 means London proof in 1992.26, 27
Purdey keeps its records by serial number and issues a two-page History Certificate as a PDF.22, 23 Contact the maker
Before you buy
- Have repairs done by a gunsmith trained to best London standards; The Field calls the Purdey complex to work on.28
- Have the barrels inspected for thin walls, bore damage and loose ribs.29, 30
- Have the stock and action examined for cracks, ideally with the locks removed to inspect the stock.30
- Have the gunsmith check the springs, the fit at the breech and the straightness of the barrels, which relaid ribs may distort.31
- Find out which single-trigger mechanism the gun has: Purdey used a mechanical gate system before its inertia system.7

History
Frederick Beesley devised the self-opening system in 1879, and Purdey helped develop and patent it in 1880.1 In the 1930s Harry Lawrence refined the WEM ejectors, removing the bow-shaped crossbar on the knuckle ahead of the kickers.32 In the 1970s Lawrence Salter perfected Purdey’s inertia-operated single trigger, the successor to the mechanical gate system.7
Sources
- The Sidelock Side-by-Side, development. James Purdey & Sons. maker website · Archive
- Pair of 1930s Purdey side by sides, configuration. The Field, 2018-07-01. magazine · Archive
- The Process Of Building A Bespoke Purdey: side-by-side choices, action-shapes. James Purdey & Sons. maker website · Archive
- The Process Of Building A Bespoke Purdey: side-by-side choices, standard-finish. James Purdey & Sons. maker website · Archive
- Vintage Purdey side-by-sides, holland-distinction. The Field, 2020-04-24. magazine · Archive
- The Process Of Building A Bespoke Purdey: side-by-side choices, double-triggers. James Purdey & Sons. maker website · Archive
- The Process Of Building A Bespoke Purdey: side-by-side choices, single-trigger-change. James Purdey & Sons. maker website · Archive
- The Process Of Building A Bespoke Purdey: side-by-side choices, ejectors. James Purdey & Sons. maker website · Archive
- The Process Of Building A Bespoke Purdey: side-by-side choices, manufacture. James Purdey & Sons. maker website · Archive
- The Sidelock Side-by-Side, action-date. James Purdey & Sons. maker website · Archive
- Bonhams catalogue: Purdey pair, lot 512, identity; marks. Bonhams, 2019-05. auction lot · Archive
- The Process Of Building A Bespoke Purdey: side-by-side choices, construction. James Purdey & Sons. maker website · Archive
- The Process Of Building A Bespoke Purdey: side-by-side choices, chokes-and-ribs. James Purdey & Sons. maker website · Archive
- The Process Of Building A Bespoke Purdey: side-by-side choices, walnut. James Purdey & Sons. maker website · Archive
- The Process Of Building A Bespoke Purdey: side-by-side choices, stock-finish. James Purdey & Sons. maker website · Archive
- Pair of 1930s Purdey side by sides, identity. The Field, 2018-07-01. magazine · Archive
- Vintage Purdey side-by-sides, 1890-pair. The Field, 2020-04-24. magazine · Archive
- Vintage Purdey side-by-sides, chambers-and-action. The Field, 2020-04-24. magazine · Archive
- Vintage Purdey side-by-sides, stock. The Field, 2020-04-24. magazine · Archive
- London Proof House: services and shotgun marks, shotgun-stamp-positions. London Proof House. proof house · Archive
- Rules, regulations and scales for proof of small arms 2006, proof-year. Gunmakers’ Company and Guardians of the Birmingham Proof House, 2006. proof house · Archive
- Digital History Certificate, serial-record. James Purdey & Sons. maker website · Archive
- Digital History Certificate, certificate. James Purdey & Sons. maker website · Archive
- Bonhams catalogue: Purdey pair, lot 512, identity. Bonhams, 2019-05. auction lot · Archive
- Bonhams catalogue: Purdey pair, lot 512, marks. Bonhams, 2019-05. auction lot · Archive
- Historic Arms Resource Centre: British proof-date codes, london-dates. Historic Arms Resource Centre. magazine · Archive
- Warlow — London proof-date example in mirrored book text, london-example. Taylor & Francis; book text mirrored by Dokumen, 2003. book · Archive
- Pair of 1930s Purdey side by sides, repair-advice. The Field, 2018-07-01. magazine · Archive
- Pair of 1930s Purdey side by sides, barrel-and-stock-checks. The Field, 2018-07-01. magazine · Archive
- Vintage Purdey side-by-sides, buying-checks. The Field, 2020-04-24. magazine · Archive
- Pair of 1930s Purdey side by sides, condition. The Field, 2018-07-01. magazine · Archive
- Pair of 1930s Purdey side by sides, ejector-development. The Field, 2018-07-01. magazine · Archive