The generator matrix

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

generates a code of length 78 over Z8 who´s minimum homogenous weight is 73.

Homogenous weight enumerator: w(x)=1x^0+242x^73+140x^74+298x^75+103x^76+374x^77+99x^78+232x^79+53x^80+132x^81+43x^82+126x^83+28x^84+54x^85+35x^86+28x^87+6x^88+30x^89+1x^90+20x^91+1x^92+2x^94

The gray image is a code over GF(2) with n=312, k=11 and d=146.
This code was found by Heurico 1.16 in 16.6 seconds.