The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+186x^71+213x^72+244x^73+221x^74+242x^75+160x^76+184x^77+123x^78+114x^79+67x^80+64x^81+56x^82+58x^83+29x^84+30x^85+15x^86+16x^87+9x^88+4x^89+1x^90+8x^91+1x^92+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 1.11 in 0.35 seconds.