The generator matrix

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

generates a code of length 68 over Z8 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+222x^64+216x^66+238x^68+144x^70+150x^72+24x^74+18x^76+3x^80+6x^88+2x^96

The gray image is a code over GF(2) with n=272, k=10 and d=128.
This code was found by Heurico 1.16 in 1.68 seconds.