The generator matrix

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

generates a code of length 74 over Z8 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+30x^64+330x^65+798x^66+952x^67+1441x^68+1740x^69+2246x^70+2204x^71+2654x^72+2424x^73+3045x^74+2644x^75+2871x^76+2274x^77+2145x^78+1560x^79+1356x^80+728x^81+561x^82+352x^83+204x^84+102x^85+37x^86+28x^87+19x^88+14x^89+4x^91+4x^93

The gray image is a code over GF(2) with n=296, k=15 and d=128.
This code was found by Heurico 1.16 in 37.9 seconds.