| Chronograph session | ||||||||||||||
| May 20, 2009 | ||||||||||||||
| Rio Grande Renegades Range, ABQ | ||||||||||||||
| 75¡ F, 6 mph wind, 30% humidity, sunny | ||||||||||||||
| Chronograph: Oehler 35P Printing Chronograph with proof channel | ||||||||||||||
| Gun | Caliber | Bullet Wt | Type | Powder | Gr. Wt. | Gr. Vol. | Avg Vel | ES | SD | PF | ||||
| Baer TR Spcl, 5" barrel | .45 ACP | 200 | LRNFP | HP38 | 5.3 | 801 | 57 | 23 | 160.2 | |||||
| Colt Gvt. Model, 5" barrel | .45 ACP | 200 | LRNFP | HP38 | 5.3 | 817 | 21 | 9 | 163.4 | |||||
| Cimarron '73 Carbine, 19" barrel | .45 Colt | 200 | LRNFP | Trail Boss | 5.5 | 823 | 35 | 14 | 164.6 | |||||
| Cimarron ER, 4-3/4" barrel | .38 SPC | 105 | LTC | APP 3f | 10 | 775 | 166 | 59 | 81.4 | |||||
| Cimarron ER, 4-3/4" barrel | .38 SPC | 105 | LTC | APP 3f | 10 | 792 | 254 | 101 | 83.2 | |||||
| Cimarron ER, 4-3/4" barrel | .38 SPC | 125 | LTC | APP3f | 17.5 | 735 | 126 | 49 | 91.9 | |||||
| Cimarron ER, 4-3/4" barrel | .38 SPC | 125 | LRNFP | 777 3f | 17.5 | 904 | 89 | 37 | 113.0 | |||||
| Taylior's '73, 18.5" barrel | .38 SPC | 125 | LTC | APP 3f | 17.5 | 1105 | 120 | 63 | 138.1 | |||||
| Taylior's '73, 18.5" barrel | .38 SPC | 125 | LRNFP | 777 3f | 17.5 | 1194 | 37 | 17 | 149.3 | |||||
| Ruger Old Army, 5.5" barrel | .44 Percussion | 144 | Speer RB | Cowboy | 16 | 556 | 111 | 46 | 80.1 | |||||
| Ruger Old Army, 5.5" barrel | .44 Percussion | 144 | Speer RB | APP 3f | 16 | 632 | 120 | 50 | 91.0 | |||||
| Ruger Old Army, 5.5" barrel | .44 Percussion | 144 | Speer RB | Cowboy | 20 | 617 | 77 | 31 | 88.8 | |||||
| Ruger Old Army, 5.5" barrel | .44 Percussion | 144 | Speer RB | APP 3f | 20 | 621 | 148 | 68 | 89.4 | |||||
| Ruger Old Army, 5.5" barrel | .44 Percussion | 144 | Speer RB | Cowboy | 25 | 707 | 77 | 31 | 101.8 | |||||
| Ruger Old Army, 5.5" barrel | .44 Percussion | 144 | Speer RB | Goex 3f | 30 | 748 | 142 | 56 | 107.7 | |||||
| Ruger Old Army, 5.5" barrel | .44 Percussion | 144 | Speer RB | Express 3f | 30 | 820 | 56 | 25 | 118.1 | |||||
| Ruger Old Army, 5.5" barrel | .44 Percussion | 144 | Speer RB | Cowboy | 30 | 769 | 51 | 19 | 110.7 | |||||
| Ruger Old Army, 5.5" barrel | .44 Percussion | 144 | Speer RB | APP 3f | 30 | 802 | 166 | 54 | 115.5 | |||||
| I set up the chrono primarily to test Wild Bunch Loads since the loads tested in January were marginal. I wouldn't go to a match | ||||||||||||||
| with a load with no safety margin. 160 is my comfortable minimum. | ||||||||||||||
| The 125 gr. .38 Spcl loads are for knockdowns, primarily rifle, since I seldom shoot a big match using cartridge pistols. | ||||||||||||||
| The ROA loads go from "smoke standard minimum" to "Recalcitrant knockdowns" or "Charging Buick" loads. | ||||||||||||||
| The 30 gr. Goex Express 3f loads proved that Express is pretty hot stuff. | ||||||||||||||
| Integrating January Chrono tests with May tests: | ||||||||||||||
| Wild Bunch Loads, minimum power factor 150 | ||||||||||||||
| Colt Gvt. Model, 5" barrel | .45 ACP | 200 | LSWC | HP38 | 5.0 | 784 | 72 | 29 | 156.8 | |||||
| Colt Gvt. Model, 5" barrel | .45 ACP | 200 | LRNFP | HP38 | 5.0 | 759 | 60 | 28 | 151.8 | |||||
| Colt Gvt. Model, 5" barrel | .45 ACP | 200 | LRNFP | HP38 | 5.3 | 817 | 21 | 9 | 163.4 | |||||
| Baer TR Spcl, 5" barrel | .45 ACP | 200 | LRNFP | HP38 | 5.3 | 801 | 57 | 23 | 160.2 | |||||
| Cimarron '73 Carbine, 19" barrel | .45 Colt | 200 | LRNFP | Trail Boss | 5.0 | 750 | 48 | 18 | 150.0 | |||||
| Cimarron '73 Carbine, 19" barrel | .45 Colt | 200 | LRNFP | Clays | 4.6 | 676 | 148 | 52 | 135.2 | |||||
| Cimarron '73 Carbine, 19" barrel | .45 Colt | 200 | LRNFP | Trail Boss | 5.5 | 823 | 35 | 14 | 164.6 | |||||
| color code: | ||||||||||||||
| Fails 150 PF | ||||||||||||||
| Passes 150 PF | ||||||||||||||
| Passes 150 PF Comfortably | ||||||||||||||