If you're unsure, or just want options, check as many boxes as you'd like. Min Charge Max Charge Optimal Charge Bullet Make Bullet Type The primary challenge in reloading for .357 SIG is getting through the neck tension issues and finding good boolits. Here you will find load data for some of the most recent cartridges on the market, with more being added each week. 38 caliber (357, 358 dia) 35 Remington Handgun 180 35 Remington Handgun 220 38 Super Auto +P 115 38 Super Auto +P 124 125 38 Super Auto +P 147 I love Unique gun powder and it works well in 357 . Alliant Powder - Reloader's Guide 9 Accurate Solo 1000 Accurate TCM Alliant Powder 2400 Alliant Powder 300-MP Alliant Powder BE-86 Alliant Powder Blue Dot Alliant Powder Bullseye Alliant Powder Power Pistol Alliant Powder Sport Pistol Alliant Powder Unique Hodgdon 700-X Hodgdon CFE Pistol Hodgdon Clays Hodgdon H110 Hodgdon … I use Herco for slightly milder .357 loads, and 2400 for full powder .357 loads, with the issues involing your plated bullets, I'd reccomend going with the Herco. WARNING. ... 357 SIG 125 357 SIG 147. Click "Get Data" to view results. A database of .357 SIG handloads. Starting out, I am using once fired Winchester .357 Brass, Speer 125 grain TMJ Bullets, Unique Powder and Winchester WSP primers. Find what you need in four easy steps. cast bullet. 7 Accurate No. 2 Accurate No. In my experiance, Unique is only good up to .38 + P velocities, using up to a 158 Gr. i usually adjust my crimping die until I can see a very slight impression of a ring at the case mouth (without distorting the case). Powder Bul Weight C.O.L. Set your sights on pistol reloading data. Then select your bullet weight, powder manufacturer and powder type. Here is the first step depriming and resizing the once fired brass. I'm starting this thread as a catch-all for the basics on this cartridge. The .357 Sig specific projectiles have a longer ogive (bearing surface) and a tighter radius (tangent ogive). I learned everything I needed here at the forum, but there is a shortage of info. The information displayed on this site, including ballistic data, was derived from tightly controlled laboratory conditions. This information and data may vary considerably depending on many factors, including the components used, component assembly, the type of firearm used, reloading techniques, safety precautions practiced, etc. 11 FS Accurate No. I'd save the Unique for .38 loads, and use Herco for .357 magnum loads. Every bullet I tested was rated up to 1,250 fps except the thick-plated 9mm/.357 Sig bullets that can be loaded to 1,500 fps. 357 Magnum 110 357 Magnum 125 357 Magnum 135 GDHP SB 357 Magnum 135 GHDP 357 Magnum 158 LSWC 357 Magnum 158 TMJ FN 357 Magnum 170 9mm Makarov (364 dia) 9x18mm Makarov 95. Gun used: Springifled XD Service model (4″ barrel) chambered in 357 Sig Dies used: Lee Precision 3 die set for 357 Sig, Hornady 9mm bullet feed die, RCBS 40 S&W carbide sizing die, and Lee Precision FCD Press used: Lee Precision Load Master + Lee Reloading Press (the Load Master only has 5 stations so I put the FCD in the single stage) The paste below makes the powder and has recipe on Unique . 5 Accurate No. Half of Berry’s production goes to OEM ammomakers and the rest to the hobby reloading market, so you may have already experienced shooting plated handgun bullets and … If you use bullets made specifically for .357 Sig, the crimp issue becomes less of a problem. ALL Accurate 4100 Accurate No. You need to get a good reloading book and Gun forum is the last place I would ask for loading data . Select your cartridge type from the drop-down list. 375 caliber (375 dia) 375 Winchester Handgun 235. There are people can't load and roll the dice 90% of the time and have super bad habits . it gives more neck tension and a tighter bullet fit.