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

generates a code of length 77 over Z8 who´s minimum homogenous weight is 75.

Homogenous weight enumerator: w(x)=1x^0+80x^75+26x^76+60x^77+12x^78+40x^79+19x^80+4x^81+4x^82+6x^83+2x^84+2x^91

The gray image is a code over GF(2) with n=308, k=8 and d=150.
This code was found by Heurico 1.16 in 0.181 seconds.