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

generates a code of length 75 over Z8 who´s minimum homogenous weight is 70.

Homogenous weight enumerator: w(x)=1x^0+256x^70+60x^71+412x^72+60x^73+361x^74+40x^75+245x^76+48x^77+261x^78+20x^79+113x^80+20x^81+51x^82+8x^83+45x^84+23x^86+13x^88+8x^90+2x^92+1x^96

The gray image is a code over GF(2) with n=300, k=11 and d=140.
This code was found by Heurico 1.16 in 0.366 seconds.