The generator matrix

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

generates a code of length 79 over Z8 who´s minimum homogenous weight is 73.

Homogenous weight enumerator: w(x)=1x^0+198x^73+349x^74+396x^75+420x^76+400x^77+447x^78+340x^79+243x^80+218x^81+220x^82+178x^83+144x^84+160x^85+120x^86+104x^87+56x^88+28x^89+31x^90+6x^91+16x^92+20x^93+1x^94

The gray image is a code over GF(2) with n=316, k=12 and d=146.
This code was found by Heurico 1.11 in 0.537 seconds.