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RML 12.5-inch 38-ton gun

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345: 393: 369: 42: 405: 357: 333: 417: 321: 230: 381: 243:. Experiments in 1874 with both 12 in (30 cm) and 12.5 in (32 cm) versions 3 ft (91 cm) longer than the existing 12 in (30 cm) gun showed the 12.5 in (32 cm) calibre was more suitable, and further experiments showed a projectile of 800 lb (360 kg) could be fired with a charge of 130 lb (59 kg) of P2 gunpowder without undue strain. The same construction as in the existing 12 in (30 cm) 35-ton gun was used : a 460:
Images 3–9 show the range of ammunition for the RML 12.5-inch gun in 1885. By this time the gun no longer fired studded ammunition without gas-checks. Instead there were two sets of ammunition available, namely: older studded ammunition with attached gas-checks Mk II, and newer studless ammunition
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The gun was rifled on the "Woolwich" pattern of a small number of broad shallow rounded grooves, with 9 grooves increasing from 0 to 1 turn in 35 calibres ( i.e. 1 turn in 437.5 in (1,111 cm)).
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with automatic gas-checks. Case ammunition neither was studded nor required gas-checks. Also by this time, attached gas-checks Mk I as shown in image 2 had been superseded by attached gas-checks Mk II.
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Muzzle velocity of 1,575 feet/second firing an 809lb 6oz projectile with a charge of 210 pounds Prism2 black powder, is quoted for Mark II gun in "Text Book of Gunnery 1887" Table XVI.
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Handbook for the R.M.L. 12.5-inch 38-ton gun, marks I and II : casemate, dwarf, and small port mountings (land service). Great Britain. War Office. London : H.M.S.O. 1885
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1,425 feet/second firing 800-pound projectile with "Battering charge" of 130 pounds "P2" (gunpowder). Treatise on Construction of Service Ordnance 1877, page 347.
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When the gun was first introduced projectiles had several rows of "studs" which engaged with the gun's rifling to impart spin. Sometime after 1878, "
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Handbook for the 12.5-inch 38-ton R.M.L. gun, marks I and II, casemate, dwarf, and small part mountings land service 1888, 1893, 1899, 1904
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Text Book of Gunnery, 1887. LONDON : PRINTED FOR HIS MAJESTY'S STATIONERY OFFICE, BY HARRISON AND SONS, ST. MARTIN'S LANE
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Mark II had an enlarged powder chamber and attained higher muzzle velocity and slightly longer range.
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Treatise on the construction and manufacture of ordnance in the British service. War Office, UK, 1877
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This gun was the final development of large British rifled muzzle-loading guns before it switched to
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The gun originated from a desire for a longer 12 in (30 cm) gun than the existing
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No 22 of 1876 outside Calbourne Mill, Isle of Wight, originally at Cliff End Battery
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commissioned in 1885, the last British warships completed with muzzle-loading guns.
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guns designed for British battleships and were also employed for coast defence.
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beginning in 1880. It was succeeded in its class on new battleships by the
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RML 12.5in Studded Palliser Shell Mk III with Attached Gas-Check Mk II
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RML 12.5in Studded Shrapnel Shell Mk I with Attached Gas-check Mk II
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RML 12.5in Studded Shrapnel Shell Mk I with Attached Gas-Check Mk I
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RML 12.5in Studded Common Shell Mk I with Attached Gas-Check Mk II
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Treatise on Construction of Service Ordnance 1877, pages 286-287
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RML 12.5in Studless Shrapnel Shell Mk I with Automatic Gas-check
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RML 12.5in Studless Palliser Shell Mk I with Automatic Gas-Check
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Handbook for RML 12.5-inch gun (1885) pp. 32-33; Plates XI-XIV
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RML 12.5in Studless Common Shell Mk I with Automatic Gas-Check
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Handbook for the R.M.L. 12.5-inch 38-ton Gun, Marks I and II
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Diagram of gun on Casemate Platform, 6 feet recoil Mark III
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Treatise on Construction of Service Ordnance 1877, page 292
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Diagram of gun on small port 6-foot recoil carriage
527:Gun number 87 and 95, dated 1878. Now in the ditch 197:Mk II : 1,575 feet per second (480 m/s) 1742: 195:Mk I : 1,425 feet per second (434 m/s) 1153: 676: 540: 1761:Victorian-era weapons of the United Kingdom 164:800 to 809 pounds (362.9 to 367.0 kg) 1160: 1146: 683: 669: 655:Diagram of gun on Dwarf 'C' Pivot Mark III 618:. London: Her Majesty's Stationery Office. 247:"A" tube toughened in oil, surrounded by 657:at Victorian Forts and Artillery website 651:at Victorian Forts and Artillery website 645:at Victorian Forts and Artillery website 228: 533: 207:Mk II : 6,500 yards (5,900 m) 14: 1743: 205:Mk I : 6,000 yards (5,500 m) 1141: 664: 493:, UK, originally at Cliff End Battery 486:, UK, originally at Cliff End Battery 476: 428:RML 12.5in Studded Shell, located at 614:Sectretary of State for War (1885). 267:BL 12 in (30 cm) Mk II gun 24: 497:Outside Fort Albert, Isle of Wight 34:Ordnance RML 12.5-inch 38-ton gun 25: 1777: 1171:small arms & ordnance of the 624: 1751:Naval guns of the United Kingdom 415: 403: 391: 379: 367: 355: 343: 331: 319: 272: 40: 1229:Webley .455" Revolver Mk I – IV 589: 1276:Pattern 1861 Enfield musketoon 576: 567: 558: 549: 234:Mark I gun barrel construction 202:Maximum firing range 149:198 inches (5.0 m) (bore) 13: 1: 301: 639:at State Library of Victoria 633:at State Library of Victoria 7: 529:at Fort Cunningham, Bermuda 464: 447:RML 12.5in Case Shot Mk III 10: 1782: 1604:BL 9.2-inch Mk IV & VI 1402:RML 7-pounder mountain gun 291:commissioned in 1883, and 1705: 1667: 1641: 1549: 1536:BL 6-inch 30 cwt howitzer 1513:RML 64-pounder 71 cwt gun 1503:RML 64-pounder 64 cwt gun 1454: 1415: 1407:RML 2.5-inch mountain gun 1392: 1323: 1314: 1237: 1179: 1117: 1086: 1063:QF 12-pounder 12 cwt Mk I 1038: 964: 891: 868: 848: 816: 793: 770: 748:Smoothbore muzzle-loading 746: 704:Smoothbore muzzle-loading 702: 224: 201: 189: 185:12.5-inch (317.5 mm) 179: 158: 153: 142: 137: 129: 119: 111: 103: 98: 88: 80: 75: 68:Place of origin 67: 55: 39: 32: 1614:BL 12-inch Mk I, VI, VII 1569:BL 6-inch Mk III, IV, VI 1458:& garrison artillery 860:68-pounder Lancaster gun 18:RML 12.5 inch 38 ton gun 1559:QF 3-pounder Nordenfelt 1369:BL 12-pounder 6 cwt gun 1199:Beaumont–Adams revolver 1058:QF 6-pounder Nordenfelt 849:Rifled muzzle-loaders ( 517:Gun on replica carriage 491:Fort Nelson, Portsmouth 48:Fort Nelson, Portsmouth 1531:BL 5-inch gun Mk I – V 1219:Kerr's Patent revolver 1053:QF 6-pounder Hotchkiss 1048:QF 3-pounder Hotchkiss 1000:BL 9.2-inch Mk I – VII 840:RBL 7-inch 110-pounder 284:commissioned in 1879, 241:RML 12-inch 35-ton gun 236: 1656:10-inch 18 cwt mortar 1651:13-inch 36 cwt mortar 1541:BL 9.45-inch howitzer 1508:RML 64-pounder 58 cwt 1493:RML 25-pounder 18 cwt 1465:4.1-inch 'Long Cecil' 1436:RML 6.6-inch howitzer 1431:RML 6.3-inch howitzer 1359:RML 16-pounder 12 cwt 1332:SBML 9 pounder 13 cwt 1109:1-inch Nordenfelt gun 1015:BL 12-inch Mk I – VII 911:RML 64-pounder 64 cwt 893:Rifled muzzle-loaders 883:RML 64-pounder 71 cwt 870:Rifled muzzle-loaders 694:naval weapons of the 277:Guns were mounted on 232: 219:rifled muzzle-loading 1446:BL 5.4-inch howitzer 1384:QF 1-pounder pom-pom 1354:RML 13-pounder 8 cwt 1271:Pattern 1853 Enfield 990:BL 6-inch Mk II – VI 985:BL 6-inch 80-pounder 818:Rifled breechloaders 534:Notes and references 312:automatic gas-checks 191:Muzzle velocity 1660:8-inch 9 cwt mortar 1526:RML 8-inch howitzer 1374:QF 12-pounder 8 cwt 1364:BL 12-pounder 7 cwt 1349:RML 9-pounder 8 cwt 1194:1897 infantry sword 1005:BL 9.2-inch Mk VIII 906:RML 9-pounder 8 cwt 308:attached gas-checks 1498:RML 40-pounder gun 1478:SBML 8-inch 65 cwt 1441:BL 5-inch howitzer 1394:Mountain artillery 1266:Pattern 1851 MiniĂ© 1020:BL 12-inch Mk VIII 946:RML 12-inch 35-ton 941:RML 12-inch 25-ton 785:13-inch Blomefield 780:10-inch Blomefield 507:An unpreserved gun 477:Surviving examples 471:List of naval guns 237: 215:RML 12.5-inch guns 99:Production history 1766:Coastal artillery 1738: 1737: 1720:0.45" Gatling gun 1637: 1636: 1551:Coastal artillery 1379:BL 15-pounder gun 1135: 1134: 1127:Whitehead torpedo 1040:Quick-firing guns 808:24-pounder Millar 803:12-pounder Millar 723:32-pounder 55 cwt 521:Harding's Battery 211: 210: 107:Royal Gun Factory 63:Coast defence gun 16:(Redirected from 1773: 1756:320 mm artillery 1698:Hales 24-pounder 1594:BL 8-inch Mk VII 1522:RML 6.6-inch gun 1321: 1320: 1224:Tranter revolver 1214:Enfield revolver 1162: 1155: 1148: 1139: 1138: 685: 678: 671: 662: 661: 619: 583: 580: 574: 571: 565: 562: 556: 553: 547: 544: 419: 407: 395: 383: 371: 359: 347: 335: 323: 44: 35: 30: 29: 21: 1781: 1780: 1776: 1775: 1774: 1772: 1771: 1770: 1741: 1740: 1739: 1734: 1701: 1695:Hales 9-pounder 1663: 1633: 1609:BL 10-inch Mk I 1545: 1474:SBML 24-pounder 1470:SBBL 32-pounder 1450: 1423:heavy artillery 1420: 1411: 1388: 1325:Field Artillery 1310: 1281:Whitworth rifle 1261:Brunswick rifle 1233: 1189:Infantry swords 1175: 1166: 1136: 1131: 1113: 1082: 1034: 960: 887: 864: 844: 812: 789: 766: 742: 738:Somerset cannon 698: 689: 627: 592: 587: 586: 581: 577: 572: 568: 563: 559: 554: 550: 545: 541: 536: 479: 467: 423: 420: 411: 408: 399: 396: 387: 384: 375: 372: 363: 360: 351: 348: 339: 336: 327: 324: 304: 275: 235: 227: 206: 196: 154: 81:In service 76:Service history 62: 51: 33: 28: 23: 22: 15: 12: 11: 5: 1779: 1769: 1768: 1763: 1758: 1753: 1736: 1735: 1733: 1732: 1727: 1722: 1717: 1715:Nordenfelt gun 1711: 1709: 1703: 1702: 1700: 1699: 1696: 1693: 1690: 1684: 1678: 1671: 1669: 1665: 1664: 1662: 1661: 1658: 1653: 1647: 1645: 1639: 1638: 1635: 1634: 1632: 1631: 1629:RML 17.72-inch 1626: 1621: 1616: 1611: 1606: 1601: 1596: 1591: 1586: 1581: 1576: 1574:BL 6-inch Mk V 1571: 1566: 1561: 1555: 1553: 1547: 1546: 1544: 1543: 1538: 1533: 1528: 1523: 1520: 1518:RML 80-pounder 1515: 1510: 1505: 1500: 1495: 1490: 1485: 1483:RBL 40-pounder 1480: 1475: 1472: 1467: 1461: 1459: 1452: 1451: 1449: 1448: 1443: 1438: 1433: 1427: 1425: 1413: 1412: 1410: 1409: 1404: 1398: 1396: 1390: 1389: 1387: 1386: 1381: 1376: 1371: 1366: 1361: 1356: 1351: 1346: 1344:RBL 20-pounder 1341: 1339:RBL 12-pounder 1336: 1333: 1329: 1327: 1318: 1312: 1311: 1309: 1308: 1303: 1298: 1296:Swinburn–Henry 1293: 1288: 1286:Snider–Enfield 1283: 1278: 1273: 1268: 1263: 1258: 1253: 1247: 1245: 1235: 1234: 1232: 1231: 1226: 1221: 1216: 1211: 1206: 1204:Adams revolver 1201: 1196: 1191: 1185: 1183: 1177: 1176: 1169:British Empire 1165: 1164: 1157: 1150: 1142: 1133: 1132: 1130: 1129: 1123: 1121: 1115: 1114: 1112: 1111: 1106: 1104:Nordenfelt gun 1101: 1096: 1090: 1088: 1084: 1083: 1081: 1080: 1075: 1070: 1065: 1060: 1055: 1050: 1044: 1042: 1036: 1035: 1033: 1032: 1027: 1022: 1017: 1012: 1007: 1002: 997: 992: 987: 982: 977: 971: 969: 966:Breech-loaders 962: 961: 959: 958: 953: 948: 943: 938: 933: 928: 923: 918: 913: 908: 902: 900: 889: 888: 886: 885: 879: 877: 866: 865: 863: 862: 856: 854: 846: 845: 843: 842: 837: 835:RBL 40-pounder 832: 830:RBL 20-pounder 827: 823: 821: 814: 813: 811: 810: 805: 799: 797: 791: 790: 788: 787: 782: 776: 774: 768: 767: 765: 764: 762:10-inch 86 cwt 759: 753: 751: 744: 743: 741: 740: 735: 730: 728:32-pounder gun 725: 720: 715: 709: 707: 700: 699: 692:British Empire 688: 687: 680: 673: 665: 659: 658: 652: 646: 640: 634: 626: 625:External links 623: 622: 621: 610: 606:2012-12-04 at 598: 591: 588: 585: 584: 575: 566: 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1163: 1158: 1156: 1151: 1149: 1144: 1143: 1140: 1128: 1125: 1124: 1122: 1120: 1116: 1110: 1107: 1105: 1102: 1100: 1097: 1095: 1092: 1091: 1089: 1087:Light weapons 1085: 1079: 1076: 1074: 1071: 1069: 1066: 1064: 1061: 1059: 1056: 1054: 1051: 1049: 1046: 1045: 1043: 1041: 1037: 1031: 1030:BL 16.25-inch 1028: 1026: 1023: 1021: 1018: 1016: 1013: 1011: 1008: 1006: 1003: 1001: 998: 996: 993: 991: 988: 986: 983: 981: 978: 976: 973: 972: 970: 968:(new pattern) 967: 963: 957: 954: 952: 951:RML 12.5-inch 949: 947: 944: 942: 939: 937: 934: 932: 929: 927: 924: 922: 919: 917: 914: 912: 909: 907: 904: 903: 901: 898: 894: 890: 884: 881: 880: 878: 875: 871: 867: 861: 858: 857: 855: 852: 847: 841: 838: 836: 833: 831: 828: 826:RBL 9 pounder 825: 824: 822: 819: 815: 809: 806: 804: 801: 800: 798: 796: 792: 786: 783: 781: 778: 777: 775: 773: 769: 763: 760: 758: 755: 754: 752: 749: 745: 739: 736: 734: 731: 729: 726: 724: 721: 719: 716: 714: 711: 710: 708: 705: 701: 697: 696:Victorian era 693: 686: 681: 679: 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249:wrought iron 238: 214: 212: 146: length 120:Manufacturer 89:Used by 1725:Gardner gun 1668:War rockets 1624:RML 16-inch 1564:QF 4.7-inch 1306:Lee–Enfield 1301:Lee–Metford 1256:Baker rifle 1099:Gardner gun 1094:Gatling gun 1073:QF 4.7-inch 956:RML 16-inch 936:RML 11-inch 931:RML 10-inch 820:(Armstrong) 523:, Gibraltar 281:Dreadnought 217:were large 133:Mk I, Mk II 1745:Categories 1689:24-pounder 1683:12-pounder 1599:RML 9-inch 1589:RML 8-inch 1584:RML 7-inch 1579:RBL 7-inch 1488:RBL 7-inch 1251:Brown Bess 1209:Webley RIC 1010:BL 10-inch 926:RML 9-inch 921:RML 8-inch 916:RML 7-inch 750:shell guns 733:68-pounder 718:24-pounder 713:18-pounder 302:Ammunition 245:mild steel 93:Royal Navy 1730:Maxim gun 1677:6-pounder 1419:, medium, 1417:Howitzers 1316:Artillery 1119:Torpedoes 1078:QF 6-inch 1068:QF 4-inch 995:BL 8-inch 980:BL 5-inch 975:BL 4-inch 874:converted 851:Lancaster 795:Howitzers 288:Agamemnon 84:1875–1905 60:Naval gun 27:Naval gun 1687:Congreve 1681:Congreve 1675:Congreve 1181:Sidearms 897:Woolwich 604:Archived 465:See also 174:Shrapnel 166:Palliser 130:Variants 112:Designed 104:Designer 1643:Mortars 1239:Muskets 772:Mortars 706:cannons 513:, Malta 482:Two at 181:Calibre 46:Gun at 1243:rifles 757:8-inch 225:Design 170:Common 144:Barrel 1692:Boxer 1456:Siege 160:Shell 1421:and 1241:and 432:, UK 295:Ajax 293:HMS 286:HMS 279:HMS 213:The 115:1874 56:Type 50:, UK 519:at 509:at 489:At 1747:: 269:. 172:, 168:, 1161:e 1154:t 1147:v 899:) 895:( 876:) 872:( 853:) 684:e 677:t 670:v 422:9 410:8 398:7 386:6 374:5 362:4 350:3 338:2 326:1 20:)

Index

RML 12.5 inch 38 ton gun

Fort Nelson, Portsmouth
Naval gun
Royal Navy
Royal Arsenal
Barrel
Shell
Palliser
Common
Shrapnel
Calibre
Muzzle velocity
rifled muzzle-loading

RML 12-inch 35-ton gun
mild steel
wrought iron
breechloaders
BL 12 in (30 cm) Mk II gun
HMS Dreadnought
HMS Agamemnon
HMS Ajax
attached gas-checks
automatic gas-checks
1
2
3
4
5

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