357 SIG – 125 gr TMJ-FN – Speer Lawman (53919) – 1000 Rounds

The 357 SIG is a fast, flat-shooting duty cartridge, and practice ammo for it can be hard to find. Speer Lawman fills that need with a load that mirrors common 125 grain duty rounds. This listing is Speer Lawman 357 SIG 125 grain Total Metal Jacket flat nose ammo, MPN 53919, sold as a 1,000 round case.

Speer rates this load at 1,350 fps with 506 ft-lbs of muzzle energy. Those numbers closely match 125 grain 357 SIG duty loads, so recoil and sight tracking in training feel like the real thing. The Total Metal Jacket covers the bullet base, which reduces airborne lead at indoor ranges and limits barrel fouling. The flat nose seats well in the bottleneck case and feeds reliably. This is a training and qualification load. The bullet does not expand, so it is not for self defense.

This ammunition fits pistols chambered in 357 SIG, including the SIG P226, P229, P239, and P320 in 357 SIG, the Glock 31, 32, and 33, the Smith and Wesson M&P357, and pistols fitted with a 357 SIG conversion barrel. A common question is whether 357 SIG is the same as 357 Magnum. It is not. 357 SIG is a bottleneck pistol cartridge based on the 40 S&W case, while 357 Magnum is a revolver cartridge. Another common question is whether a 40 S&W pistol can shoot 357 SIG. Only with a dedicated 357 SIG barrel, since the cases are shaped differently.

Speer 53919 is new production ammunition, not reloads, made in the USA by Speer in Lewiston, Idaho. It uses reloadable brass cases with boxer primers and is non-corrosive. This case contains 20 boxes of 50 rounds for a total of 1,000 rounds. For a less common caliber, a full case gives you a dependable supply for qualification and training throughout the year.