The generator matrix

 1  0  1  1  1  6  1  1  0  1  1  6  1  1  0  1  1  6  1  1  0  1  1  6  1  1  0  1  1  6  1  1  0  1  1  6  1  1  1  1  4  2  1  1  1  1  4  2  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  4  1  1  1  1  1  1  2
 0  1  3  6  1  1  3  0  1  6  5  1  0  3  1  6  5  1  0  3  1  6  1  1  0  3  1  6  5  1  0  3  1  6  1  1  0  6  3  5  1  1  4  2  7  5  1  1  4  2  4  2  4  2  4  2  0  6  4  2  4  2  4  2  7  5  7  5  7  4  1  3  7  7  1  7  0
 0  0  4  0  0  0  0  4  4  4  4  4  0  0  0  4  4  4  4  4  4  0  0  0  0  0  0  0  0  0  4  4  4  4  4  4  0  0  0  0  4  4  4  4  4  4  0  0  4  4  4  0  0  0  4  0  4  4  0  4  0  4  0  0  4  0  4  0  0  4  0  4  4  0  4  0  0
 0  0  0  4  0  4  4  4  4  0  4  0  0  0  4  0  0  4  4  4  0  4  4  0  4  0  0  0  4  4  0  0  0  4  4  4  4  0  4  0  4  0  0  4  4  0  4  0  0  0  4  4  4  0  4  0  0  4  4  0  0  4  0  4  0  0  0  4  4  0  0  4  4  4  4  0  0
 0  0  0  0  4  0  4  4  4  4  0  4  4  0  4  0  4  0  0  4  0  4  0  4  4  4  4  4  4  4  4  4  4  4  4  4  0  0  0  0  0  0  0  0  0  0  0  0  4  0  4  0  4  4  0  0  0  0  0  4  4  4  0  4  0  4  4  0  4  0  0  0  4  0  4  4  0

generates a code of length 77 over Z8 who´s minimum homogenous weight is 74.

Homogenous weight enumerator: w(x)=1x^0+70x^74+64x^75+88x^76+128x^77+38x^78+64x^79+6x^80+50x^82+1x^86+1x^96+1x^118

The gray image is a code over GF(2) with n=308, k=9 and d=148.
This code was found by Heurico 1.16 in 0.189 seconds.