Sierra Heavy TMK 6MM Testing

[rbutcher1234]

I’ll be driving a bunch of the 107 tmks out of a 16” 6BR. Not as fast as what other are reporting, but should be easier to validate performance in the edge cases near 1,700 fps.

At 6BR speeds, I’m already assuming the 116 is a worse choice than the 107.

 

[Castle Rock]

The tips on the TMK’s are less than impressive IMO. These are the 116’s. Tip on the left is raised slightly, canted to the right and where the jacket meets the tip is also crooked.

View attachment 1043720


They still shoot decent, but nothing spectacular. But you can’t expect anything extraordinary with tips wobbling at 260,000 RPM’s. 42.5gr. N555 gave 3010fps from a 26” 6 creed at 2.920” COAL.

They must have poached someone from Hornady, at least the tips weren’t busted off completely.

 

[JDMBEND]

Powder Valley has 500 ct 153 TMK’s for $238.95, compared to Midway at $314.99. These shoot very well, at least for me.