The generator matrix

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

generates a code of length 76 over Z8 who´s minimum homogenous weight is 71.

Homogenous weight enumerator: w(x)=1x^0+200x^71+118x^72+380x^73+113x^74+364x^75+102x^76+198x^77+88x^78+154x^79+28x^80+60x^81+25x^82+100x^83+20x^84+40x^85+14x^86+26x^87+3x^88+8x^89+4x^91+2x^93

The gray image is a code over GF(2) with n=304, k=11 and d=142.
This code was found by Heurico 1.16 in 0.364 seconds.