The generator matrix

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

generates a code of length 75 over Z8 who´s minimum homogenous weight is 71.

Homogenous weight enumerator: w(x)=1x^0+126x^71+105x^72+326x^73+24x^74+126x^75+76x^76+26x^77+44x^79+33x^80+84x^81+8x^82+12x^83+2x^84+4x^85+6x^87+5x^88+6x^89+6x^91+2x^92+2x^93

The gray image is a code over GF(2) with n=300, k=10 and d=142.
This code was found by Heurico 1.16 in 0.322 seconds.