Table of Ballistic Data, to Examine the Trans-sonic Variation in Ballistic Coefficient, 'C '. Subject Projectile:        Howitzer Lead Round Nosed 9mm Parabellum Physical Data:               Weight = 125 grains         Calibre = .355                    Form Factor = 1.2095    Derived Value of C = 0.1172
Chronograph Details:

Type:

Spacing: Location:
Initial 'V' Final 'v' Distance projectile travels between 'V' & 'v' velocity measurement.

50 feet

Indoors

Yes
ProChrono ProChrono Outdoors  
a b Altitude (feet above Sea Level)  
Venue: Lane 5, Stafford Post Office Club.

Test Data

Computation of Space Functions & Ballistic Coefficient ex American Ingalls' Tables

Retardation & Ballistic Coefficient ex British (1902-1909) Firing Data

Velocity

Initial Final Mean

S(V)

S(v)

S(v)-S(V)

C

R

(Retardation STD)

r

(retardation TEST)

C

1176 1130 1153 9268.8 9680.1 411.3 0.12157 131.14 1060.76 0.123629
1200 1149 1174.5 9078.6 9493.2 414.6 0.12060 147.737 1197.99 0.123321
1190 1141 1165.5 9156.0 9566.4 410.4 0.12183 140.586 1142.19 0.123084
1172 1125 1148.5 9302.0 9719.1 417.1 0.11988 127.874 1079.59 0.118447
1191 1145 1168 9140.3 9529.5 389.2 0.12847 142.542 1074.56 0.132652
1171 1126 1148.5 9302.0 9719.1 417.1 0.11988 127.874 1033.65 0.123711
1150 1104 1127 9493.2 9943.8 450.6 0.11096 113..2 1036.84 0.109178
1143 1098 1120.5 9547.9 10008.3 460.4 0.10860 109.054 1008.45 0.108141
1152 1121 1136.5 9475.2 9758.6 283.4 0.17643 119.498 704.63 0.169589
1172 1117 1144.5 9302.0 9798.7 496.7 0.10066 125.028 1258.95 0.099312
1209 1160 1184.5 9003.8 9404.5 400.7 0.12478 156.041 1160.81 0.134424
1210 1155 1182.5 9003.8 9439.6 435.8 0.11473 154.349 1300.75 0.118662
1205 1157 1181 9033.4 9422.0 388.6 0.12867 153.091 1133.76 0.135029
1218 1165 1191.5 8945.6 9352.7 407.1 0.12282 161.386 1262.99 0.127781
1192 1141 1166.5 9140.3 9566.4 426.1 0.11734 141.365 1189.83 0.118811
1207 1159 1183 9018.5 9404.5 386 0.12953 154.771 1135.68 0.136280
1217 1165 1191 8945.6 9352.7 407.1 0.12282 161.183 1238.64 0.130129
1208 1159 1183.5 9018.5 9404.5 386 0.12953 155.193 1159.83 0.133807
1197 1149 1173 9093.9 9493.2 399.3 0.12522 146.524 1126.08 0.130119
1223 1169 1196 8903.0 9318.8 415.8 0.12025 163.222 1291.68 0.126364
1245 1192 1218.5 8752.1 9140.3 388.2 0.12880 172.608 1291.61 0.133638
1230 1170 1200 8861.3 9318.8 457.5 0.10929 164.865 1440 0.114490

ACE/mjgba 2002 - ref. 9mmParaBallisticData1.wpd
Table of Ballistic Data, to Examine the Trans-sonic Variation in the Ballistic Coefficient, 'C '. Subject Projectile:       Howitzer Lead Round Nosed 9mm Parabellum Physical Data:                     Weight = 125 grains              Calibre = .355                         Form Factor = 1.2095         Derived Value of C = 0.1172
Chronograph Details:

Type:

Spacing: Location:
Initial 'V' Final 'v' Distance projectile travels between 'V' & 'v' velocity measurement.

50 feet

Indoors

Yes
ProChrono ProChrono Outdoors  
a b Altitude (feet above Sea Level)  
Venue: Lane 5, Stafford Post Office Club.

Test Data

Computation of Space Functions & Ballistic Coefficient ex American Ingalls' Tables

Retardation & Ballistic Coefficient ex British (1902-1909) Firing Data

Velocity

Initial Final Mean

S(V)

S(v)

S(v)-S(V)

C

R

(Retardation STD)

r

(retardation TEST)

C

1210 1157 1183.5 9003.8 9422.0 418.2 0.11956 155.193 1254.51 0.123708
1229 1180 1204.5 8861.3 9236.0 374.7 0.13344 166.727 1180.41 0.141245
1219 1166 1192.5 8931.3 9352.7 421.4 0.11865 161.793 1264.05 0.127996
1226 1174 1200 8889.0 9285.3 396.3 0.12617 164.865 1248 0.132103
1212 1153 1182.5 8989.1 9457.3 468.2 0.10679 154.349 1395.35 0.110617
1215 1161 1188 8960.0 9387.1 427.1 0.11707 159.039 1283.04 0.123955
1231 1179 1205 8847.5 9236.0 388.5 0.12870 166.934 1253.2 0.133207
1242 1186 1214 8779.1 9187.7 408.6 0.12237 170.703 1359.68 0.125546
1241 1183 1212 8779.1 9203.7 424.6 0.11776 169.861 1405.92 0.120818
1237 1192 1214.5 8806.3 9140.3 334 0.14970 170.914 1093.05 0.156364
1244 1189 1216.5 8765.6 9156.0 390.4 0.12807 171.76 1338.15 0.128356
1237 1191 1214 8806.3 9140.3 334 0.14970 170.703 1116.88 0.152839
1245 1188 1216.5 8752.1 9171.8 419.7 0.11913 171.76 1386.81 0.123852
1248 1197 1222.5 8738.7 9093.9 355.2 0.14077 174.314 1246.95 0.139792
1268 1215 1241.5 8606.7 8960.0 353.3 0.14152 182.568 1315.99 0.138731
1251 1195 1223 8711.9 9109.3 397.4 0.12582 174.528 1369.76 0.127415
1254 1200 1227 8698.6 9078.6 380 0.13158 176.246 1325.16 0.133000
    0     0 ??      
    0     0 ??      
    0     0 ??      
    0     0 ??      
    0     0 ??      

ACE/mjgba 2002 - ref. 9mmParaBallisticData1.wpd