The generator matrix

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

generates a code of length 75 over Z8 who´s minimum homogenous weight is 60.

Homogenous weight enumerator: w(x)=1x^0+87x^60+4x^61+81x^62+58x^63+252x^64+126x^65+452x^66+234x^67+1066x^68+520x^69+2250x^70+984x^71+3600x^72+1414x^73+4439x^74+1592x^75+4642x^76+1364x^77+3639x^78+890x^79+2137x^80+538x^81+1097x^82+282x^83+409x^84+128x^85+222x^86+52x^87+70x^88+2x^89+70x^90+4x^91+17x^92+30x^94+4x^96+5x^98+3x^100+2x^102+1x^106

The gray image is a code over GF(2) with n=300, k=15 and d=120.
This code was found by Heurico 1.16 in 53.9 seconds.