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69 tmk


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  • 3 weeks later...

35.8g with Sierra 69g TMK bullets gives 3480 fps (1in 9 twist barrel) and 1/2" groups at 100 yards

It's also the powder recommended by RS for the 22-250

 

Cheers

 

Bruce

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  • 1 month later...

I use N160 with 69TMK’s in my 1 in 8 twist 22” barrel with 36.6 grns there doing 3200 not the fastest but they stabilise well, the only other powder I’ve used was n140 which I gave up on as couldn’t get it to work.

I’ve haven’t tried RS52 I might have to give that ago next.

From my original load testing bottom left 5 shot group 36.6 GRNS N160IMG_0388.thumb.jpeg.f5d4b6382d4091f72a716487b5eeac0b.jpeg

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