Cholla Posted January 19, 2019 Share Posted January 19, 2019 I have been reloading .38 Special 105-grain bullets with 3.1 grains of E3. I want to change over to .357 brass and eventually go to 125 RNFP that I will be molding. I would assume 3.1 would still be fine for the 105-grain bullets in .357 cases. From what I see on other forums the rule of thumb is to use the reloading data for RedDot and lessen it by 10%. Using that data, the same charge should be a good starting place for the .357 cases with the 125 RNFP. Anyone else with experience using E3 in .357? Link to comment Share on other sites More sharing options...
Cholla Hill Tirador Posted January 19, 2019 Share Posted January 19, 2019 Here are some tests I ran back in '13 when powder was in great shortage. This was really meant to be a comparison test and not necessarily load development. e3 is a very fast burning powder, faster than even Red Dot or Bullseye, so use it with caution. Firearm- Uberti Hombre; .357 Mag.- 4 3/4" barrelCase- R-PPrimer- Tula SPPBullet- H&G #51 160 gr. SWC, ACWW, .358" e3- 2.5 grs.; 683 fps; e.s.=50 Bullseye- 2.5 grs.; 650 fps; e.s.= 37 e3- 3.0 grs.; 777 fps; e.s.=67 Bullseye- 3.0 grs.; 730 fps; e.s.=22 e3- 3.5 grs.; 858 fps; e.s.=22 Bullseye- 3.5 grs.; 828 fps; e.s.=11 Bear in mind that any load you use in a .38 case will give less velocity (and pressure) in a .357 case. Cholla (Also) Link to comment Share on other sites More sharing options...
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