Interesting Blackhorn/Triple Seven Velocity Comparison
I shot Blackhorn 209 and Triple Seven FFFG over the chronograph this weekend in the short 24" barrel of my Omega X7.
The bullet was Hornady's .452/300 grain XTP Mag in Harvester long black sabots. CCI 209M's were used with Blackhorn and Winchester 209's with the T7.
The velocity shown below is the average of five shots with each load. The chronograph was ten feet from the muzzle. The bore was brushed with a dry nylon brush between BH shots and swabbed with both sides of an alcohol patch between the T7 shots.
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.................. ................... VELOCITY ............................
LOAD ......... TRIPLE SEVEN FFFG ..... BLACKHORN 209
75 grains ......... 1642 fps ..................... 1571 fps .....
85 grains ......... 1749 fps ..................... 1685 fps .....
95 grains ......... 1817 fps ..................... 1746 fps .....
105 grains ........ 1875 fps ..................... 1877 fps .....
115 grains ........ 1915 fps ..................... 1947 fps .....
I thought it interesting that T7 was in the lead with the smaller charges. They about tied at 105 grains. Then BH took the lead with 115 grains. I didn't go to 125 grains because the recoil with 115 was about all I wanted to deal with in the little X7.
By the way, my hunting load of 105 grains of GOEX FFFg under that same bullet averages 1550 fps.