Instructions for the examination of ordnance for steel and copper choke.

Collection type	Library
Author	Great Britain. Army.;
Call Number	355.82 R344 Pt. II/15 1922
Document type	Monograph
Year	1922.
Pagination	14 p., 2 folded sheets (45 x 25cm) : ill. ; 22 cm.
Publisher	Printed under the authority of H.M.S.O. by Harrison and Sons,
Note	Caption title. "Issued with Army Orders for December, 1922". Pamphlet mounted on cardboard. The cause of steel choke and coppering is explained. A contraction in the bore may be due to one or more of the following causes -- steel choke, coppering, indentations on exterior, burrs and torn rifling. The text also gives detail illustrations and explanations in the appendix.
Place made	London :

Abstract

Appendix I (a): Table on guns liable to steel choke and for which reduced windage projectiles have been approved, with limits for choke -- Appendix I (b): Table of guns that are not liable to steel choke, and for which reduced windage projectiles have bee n approved, with limits for choke by coppering -- Appendix I (c): Table of guns for which reduced windage projectiles have not been approved -- Appendix II: Instructions for de-coppering bores of guns by the chemical method -- Appendix III: Instructions f or the use of tinfoil as a means of prevention of coppering in guns -- Appendix IV: Instructions for removing chokes in the bore of guns.