The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+269x^64+280x^65+854x^66+772x^67+1421x^68+1376x^69+2330x^70+2024x^71+2809x^72+2584x^73+3220x^74+2772x^75+2884x^76+2212x^77+2210x^78+1344x^79+1323x^80+744x^81+630x^82+192x^83+290x^84+36x^85+108x^86+46x^88+20x^90+13x^92+4x^94

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 48.3 seconds.