223 Tack-Hammer : FDR 
 The FDR stands for the Dime size groups routinely found through the target paper.  The FDR employs 416 stainless steel integrally compensated match barrels and routinely shoot ½” groups at 100 yards.  Although these .223 guns are nowhere near as invigorating to shoot as the big bore Sledgehammers, they do get the job done; and look pretty damn cool to boot.  That’s good enough for us.  

Upper Assemblies - $865
Upper with muzzle brake installed (as shown above) - $1,040
Complete rifle $1,350 (price of optics not included)
For Orders 
Contact Tromix

Tony shot this .4" group at 100 yards with a Tromix AR chambered in 17 Remington. 

The first shot from the clean bore went a little low. Shot #2 through #5 went into 1/4".

Some 17 Remington customers have reported getting 1/4 groups using the 30gr Starke bullet, which is what I used to shoot that group to the right.  www.starkebullets.com Upper Assemblies - $865  Complete rifle $1,350  (price of optics not included) For Orders  Contact Tromix

The 20 Tactical employs a standard .223 cartridge case, but is necked down to .20 caliber with a sharper, 30 degree shoulder angle.  Hornady currently manufactures a 20 caliber 33 grain V-Max bullet and Berger produces .20 caliber bullets with 36 grains. 

Upper Assemblies - $865  Complete rifle $1,350 (price of optics not included) For Orders  Contact Tromix

Click for larger image

This 100 yard five shot group shown above was fired by Tony Rumore during test firing a TR-15 TackHammer chambered in Tactical 20. The group measures .35" and is typical of the accuracy you can expect from the Tromix TackHammer rifles.

Below the new 20 Tactical cartridge flanked on the left by a .223 and on the right by a 17 Remington. The .223 and 17 Remington employ the same 23 degree shoulder whereas the 20 Tactical has a bit more improved 30 degree shoulder. To make a .20 Tactical round, you simply run a .223 cartridge case through the .20 Tactical size die and you're good to go. General ballistics are as follows:

Available now! The .204 Ruger is the latest addition to the Tromix Tack Hammer lineup. Hornady factory ammunition is available off the shelf as well as reloading dies. Hornady also produces a 32, 33, and 40 gr V-Max bullets, or you can choose from many other custom bullet makers. Velocity runs over 4200fps with the 32 and 33 grain bullets. Pictured here is the first production TR-15 rifle chambered in .204 Ruger sporting a 25" Pac-Nor Super Match 1:12 twist bull barrel. Groups fired during the initial range test proved that the factory ammunition is capable of 1/2" or better five shot groups at 100 yards. Empty brass will be available shortly, but in the interim, you can resize and fire from .222 Rem Mag cases available directly from Huntingtons.  Complete rifles start at  $1,350.  Uppers run $865 shipped. For Orders  Contact Tromix

For more information link to Mike's  THE TWENTY CALIBER PAGE 

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