The generator matrix

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

generates a code of length 80 over Z8 who´s minimum homogenous weight is 66.

Homogenous weight enumerator: w(x)=1x^0+29x^66+60x^67+125x^68+206x^69+295x^70+510x^71+614x^72+900x^73+1151x^74+1584x^75+1964x^76+2226x^77+2539x^78+2598x^79+2846x^80+2864x^81+2847x^82+2284x^83+1919x^84+1474x^85+1029x^86+938x^87+560x^88+452x^89+227x^90+200x^91+123x^92+62x^93+51x^94+18x^95+25x^96+8x^97+16x^98+12x^100+4x^102+2x^104+2x^106+1x^108+2x^110

The gray image is a code over GF(2) with n=320, k=15 and d=132.
This code was found by Heurico 1.16 in 58.9 seconds.