The generator matrix

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

generates a code of length 74 over Z8 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+307x^64+216x^65+846x^66+592x^67+1744x^68+1180x^69+2458x^70+1872x^71+3191x^72+2296x^73+3544x^74+2292x^75+3203x^76+1912x^77+2524x^78+1132x^79+1422x^80+512x^81+734x^82+252x^83+298x^84+28x^85+122x^86+4x^87+71x^88+12x^90+3x^92

The gray image is a code over GF(2) with n=296, k=15 and d=128.
This code was found by Heurico 1.16 in 45.7 seconds.