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

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

Homogenous weight enumerator: w(x)=1x^0+103x^66+128x^67+260x^68+278x^69+398x^70+636x^71+740x^72+982x^73+1243x^74+1408x^75+1757x^76+2100x^77+2291x^78+2556x^79+2681x^80+2630x^81+2509x^82+2282x^83+1824x^84+1566x^85+1164x^86+884x^87+653x^88+514x^89+374x^90+260x^91+213x^92+104x^93+78x^94+36x^95+51x^96+18x^97+26x^98+2x^99+10x^100+3x^102+1x^104+1x^106+1x^110+1x^112+1x^118

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 83.5 seconds.