Questions? E-mail the webmaster here.

Check out my Reloading Data for updated information.

My 475 TREMOR is the creation of Tony Rumore of Tromix Corporation. Tony is well known for his exciting variations on the AR-15 platform. The 475 TREMOR is the creation of Marty ter Weeme of Teppu Jutsu and is a necked-up version of the 458 SOCOM, which is a new, proprietary cartridge designed to deliver .458 caliber bullets from an AR-15. The 475 TREMOR is an exciting way to launch 400, 500 and even 600-grain bullets from a magazine fed firearm. This upper was Tony's prototype and to my knowledge, the only one of it's kind. My 475 TREMOR upper is built in the ultra-light configuration instead of the standard heavy barrel variant. Tony recalled that Tromix only built five other light weight units, two ultra-light .458's and three ultra-light 50AE's. The DPMS high-rise upper has a 16", Pac-Nor Stainless 1:18" twist match barrel. I purchased it from Tony after he decided to discontinue his adventure with Tromix to focus on other avenues. Due to it being a prototype, I had custom reloading dies cut by CH Tool & Die and I will be purchasing 458 SOCOM brass from Marty ter Weeme at Teppo Jutsu. I will update the information as oftern as possible as I discover the true potential of this monster.

My 475 TREMOR upper for an AR-15.
DPMS upper on an OlyArms lower, Bushnell HoloSight
5.93 lbs as pictured - can you say "light artillery"

Muzzle view - 475 TREMOR on the left and 223 on the right.

250gr Solid @ 2252fps verses 1/4" Steel Plate

Rounds loaded with Barnes 500gr Solids

475 TREMOR reloading data.

475 TREMOR Links
Tromix - Home of Tony Rumore, Evil Genius #1.
Teppo Jutsu - Marty ter Weeme, Evil Genius #2.


Sign Guestbook View Guestbook