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The Ultimate Reloading Manual
Wolfe Publishing Group
  • reloading manual
  • alliant reloading data
  • reloading brass
  • shotshell reloading
  • bullet reloading
The Ultimate Reloading Manual

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.270 JDJ (Cartridges of the World)

.270 JDJ (Cartridges of the World)
Warning! CAUTION: THESE ARE VERY HOT LOADS! FOR USE IN SSK BARRELS ONLY! NOTES: Based on the 225 Winchester case (itself a modified 30-30 case) this improved chambering provides ample capacity to deliver impressive velocity from handgun-length barrels, now commonly 14-16 inches. Best applications are in handgun varminting and hunting of smaller big game species, through mule deer size. For varminting, best performance is probably achieved with bullets of 100 grains. Either Hornady's or Sierra's 110-grain bullets would be good choices for pronghorn hunting. For hunting deer and similar-sized game, the best bullet weight is 130 grains. Heavier bullets can deliver more energy, but expansion is unreliable. This chambering has seen considerable use in various types of handgun competition. This is ample testimony to the potential accuracy of this chambering and the quality of gunsmithing involved in such alterations. Barnes' 100-grain X offers superior terminal performance for hunting applications. However, use of this bullet requires special handloading techniques (deeper bullet seating and a reduction in powder charge). (Cartridges of the World 9th Edition)
Be Alert: Publisher cannot be responsible for errors in published load data.
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
100 SP Alliant RL-7 Subscribe 2,795
Remarks: energy: 1,735; maximum load SSK barrels only
110 SP IMR IMR-4320 Subscribe 2,520
Remarks: energy: 1,555; maximum load; SSK barrels only
130 SP Alliant RL-7 Subscribe 2,370
Remarks: energy: 1,625; maximum load; SSK barrels only
130 SP IMR IMR-3031 Subscribe 2,470
Remarks: energy: 1,765; maximum load; SSK barrels only