The generator matrix

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

generates a code of length 75 over Z8 who´s minimum homogenous weight is 73.

Homogenous weight enumerator: w(x)=1x^0+54x^73+80x^74+20x^75+30x^76+40x^77+14x^78+4x^79+1x^80+8x^81+2x^82+2x^89

The gray image is a code over GF(2) with n=300, k=8 and d=146.
This code was found by Heurico 1.16 in 0.167 seconds.