Since 2001, Stan Chen has crafted some of the finest custom 1911 pistols in the world. He has built a solid reputation in the industry of innovation, skillful craftsmanship, and meticulous attention to detail. In 2010, Stan Chen took that attention to detail and drive for excellence into the manufacture of precision, match grade ammunition for tactical, defensive and competition purposes. Knowledge of precision weapon dynamics as a custom gun builder gives ASYM Precision unique insight into the specs and requirements of ammunition in high performance weapon platforms.
Using the finest components in the industry, ASYM Precision Ammunition was developed for shooters, by shooters. During quality control, each piece of loaded ammunition is hand inspected and chamber checked to ensure you're getting high quality rounds in each and every box. Competitive shooters, military and law enforcement personnel as well as hunters, can trust ASYM to perform consistently and accurately in every shooting situation.
From Stan Chen: The ASYM Solid Defense X (SDX) line of ammunition offers a no-nonsense round with solid copper, solid penetration and solid expansion. The nickel plated, made in the USA brass case offers protection against corrosion. Between the brass and bullet is a premium low flash propellant that delivers consistency and great performance. Finally, the SDX line is loaded with the TAC-XP bullet from Barnes. Designed primarily for law enforcement and personal defense, the TAC-XP bullets have been tested in a variety of situations including shooting through barriers like wood, glass and metal, each time maintaining their original weight. ASYM SDX is, designed for functional reliability and controllability in all weapon systems. It is loaded to a pressure level that delivers outstanding bullet performance, yet does not overly stress the weapon or shooter. Recoil is even less than standard 45 ball loads. Based on our years of full time precision gun building, we generally feel +P loads in 45 ACP are contraindicated (though they may make good sense in other calibers), especially in "stock" pistols on the 1911 platform. We generally prefer to keep 45 loads at standard pressure. However, due to the unique, long bearing surface of the Barnes solid copper bullet, pressures run higher at a given velocity compared to traditional lead core bullets. Our load just crosses into +P territory. The bottom line is, do not let the +P rating dissuade you, this is a very reliable, controllable, low flash, and moderate blast load. Performance is outstanding in both full size and compact firearms. In pistols containing the proper recoil spring to handle normal, full power ammunition, there is no need to re-spring the pistol with this load.
- Caliber: 45 ACP +P
- Bullet Weight: 185 Grains
- Bullet Style: Barnes TAC-XP HP
- Case Type: Nickel Plated Brass
- Muzzle Velocity: 1020 fps
- Muzzle Energy 427 ft lb
Smith & Wesson Team Captain Julie Golob on ASYM Precision Ammunition:
"Stan Chen is a renowned gunsmith. He is absolutely meticulous when he builds guns, both inside and out. His attention to detail results in firearms that are both works of art and are 100% functional. With ASYM Stan translates that expertise to a line of ammunition that meets his impeccable standards. I first started using ASYM Ammunition in 2010 and have won seven world and national Titles with it. I have also taken it in the field hunting. It's reliable, incredibly accurate and provides the shooter the opportunity to make the best shots they are capable of."