Looking @ aheavy 22 mold

[cwlongshot]

Any one with knowledge of stabulisation of the Mihec 277-75 mold in a 1:9 twist?

I have had no luck with 77 J words. But 69 whoot bug holes.

CW

https://www.mp-molds.com/product/227-75-nato-gas-check-no-lube-groove-8-cav-mold/

[sigep1764]

If you are talking about the 227-75 Nato Mold, they shoot great with 15 to 22 grains of W748. I powder coat and use 20 grains for something around 2000fps. They shoot equally well in 1 in 7 twist PSA ARs and a Savage Axis 223. Am wanting a non gas check aluminum mold, I have the 6 cav brass mold

[sigep1764]

Ammendment-They weigh around 70 grains with my hard alloy. My friends son shot my Axis with the above load at a deer last year. Fist size hoke at 60 yards.