The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  1  2  1  1
 0  2  0  0  0  2  6  6  0  0  0  0  2  6  6  2  0  0  0  0  2  6  6  2  0  2  4  2  4  2  4  6  4  6  4  2  4  2  4  6  2  4  6  0  4  2  4  2  0  6  4  4  2  4  6  6  4  0  4  4  6  2  6  6  0  4  0  0  2  2  2  6  4  0  0  2  4
 0  0  2  0  2  2  2  0  4  6  4  6  6  4  6  4  0  2  4  6  2  4  2  4  4  6  4  2  6  0  2  0  4  6  4  2  2  4  6  0  4  0  2  2  4  0  6  6  6  6  0  0  0  6  6  4  0  0  2  2  2  6  0  4  0  0  2  6  2  2  0  4  0  4  4  4  2
 0  0  0  2  2  0  2  2  4  6  6  4  4  6  6  4  4  6  2  0  4  2  6  0  0  0  2  6  6  2  4  4  0  0  6  2  2  6  4  0  2  6  4  4  4  4  2  2  2  4  2  4  6  0  2  4  0  6  6  0  0  6  6  0  0  2  2  0  0  6  2  4  2  4  2  6  0

generates a code of length 77 over Z8 who´s minimum homogenous weight is 73.

Homogenous weight enumerator: w(x)=1x^0+12x^73+29x^74+74x^75+36x^76+216x^77+31x^78+68x^79+27x^80+12x^81+3x^82+2x^83+1x^150

The gray image is a code over GF(2) with n=308, k=9 and d=146.
This code was found by Heurico 1.16 in 0.164 seconds.