The generator matrix

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

generates a code of length 78 over Z8 who´s minimum homogenous weight is 75.

Homogenous weight enumerator: w(x)=1x^0+112x^75+48x^76+88x^77+50x^78+112x^79+6x^80+48x^81+13x^82+14x^83+6x^84+8x^85+2x^88+2x^99+1x^104+1x^106

The gray image is a code over GF(2) with n=312, k=9 and d=150.
This code was found by Heurico 1.16 in 9.56 seconds.