10MM

    The 10MM has become the .41 Magnum of the auto world. It has developed a cult classic following among those who think this is the best all around auto pistol cartridge. The 10MM was developed to be "The Replacement" for the .45 A.C.P. by offering a flatter shooting, harder hitting but still controllable cartridge. The first 10MM platform was the Bren 10 By Dornaus and Dixon with the original ballistics set at 1200 fps with a 200 grain bullet. Ammunition was originally made by Norma. The gun and cartridge were given the full blessing and support by none other than Jeff Cooper who pioneered much of what is known today as modern pistol craft. With the slow switch over from revolvers to autos by law enforcement and the staggering failures of 9mm (including the famous FBI Miami shoot out) it would have seemed that the 10MM was in the right place and the right time to become the heir successor to the next generation of sidearm calibers for law enforcement who were continually being outgunned by the bad guys. Unfortunately the guns size and recoil were a problem to many in law enforcement and it was requested that the ammo be downloaded for more controllability; in essence the 10MM Lite. Since the power of the cartridge was being downloaded, S&W shortened the cartridge and ballistics into the then new .40 S&W and put the cartridge into a 9mm sized platform. Many referred to the new cartridge as "Short&Weak." The .40 S&W prevailed and became the standard for many in law enforcement with some departments moving into .357 Sig to obtain ballistics closer to the .357 Magnum which was rated the No.1 one shot stopper. The 10MM faded off with only a small dedicated following keeping the cartridge alive. It is interesting to note that the FBI who started much of this ended up going with a bunch of new guns chambered in ... wait for it ... .45 A.C.P. Truth is stranger than fiction.
    Anyway, bullets for the .40 S&W will work in the 10MM and I give you a good selection to choose from.
    Just click on any bullet to get more detailed information. If you are still uncertain about which bullet will best meet your needs just drop me a line president@pennbullets.com or give me a call (412 767-4670 Monday - Friday 10 AM - 5 PM EST) and I will help.

Bob P.