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I only ask I got this from Johan, their load guy.  I didn't try TAC based on his recommendations below and potential velocities and compression issues.  I love TAC however...




Greg,


TAC will be too slow burning requiring even more compression than the faster X-Terminator below.


You can load to the same loads as for X-terminator but the velocities will be 5 to 7% lower.


Caliber:      6mm x 45 (6mm-223Rem)


Barrel length:      20”


For 16” barrel reduce velocity by 5% to 6% (ca 120 -150 Fps).


For 24” barrel increase velocity 3% to 4% (ca 90 -110 Fps)


Powder:           Ramshot --- X-Terminator.


Bullet weight:  60 grains.


Start load: 26.1 grains (2800 – 2900 ft/p/sec)


Maximum load: 29.0 grains (3075 – 3175 Ft/p/sec).  Full case/compressed.


Bullet weight:  70 grains.


Start load: 25.3 grains (2650 – 2750 ft/p/sec)


Maximum load: 28.0 grains (2900 – 3000 Ft/p/sec).  Full case/compressed.


Bullet weight:  75-80 grains.


Start load: 24.3 grains (2550 – 2650 ft/p/sec)


Maximum load: 27.0 grains (2850 – 2950 Ft/p/sec).  Full case/compressed.


Bullet weight:   85 grains.


Start load: 23.4 grains (2500 – 2600 ft/p/sec)


Maximum load: 26.0 grains (2700 – 2800 Ft/p/sec).  Full case/compressed.


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