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

generates a code of length 76 over Z8 who´s minimum homogenous weight is 66.

Homogenous weight enumerator: w(x)=1x^0+266x^66+280x^67+868x^68+864x^69+1510x^70+1396x^71+2269x^72+1968x^73+2770x^74+2592x^75+3078x^76+2648x^77+3000x^78+2216x^79+2239x^80+1384x^81+1340x^82+656x^83+623x^84+232x^85+242x^86+84x^87+144x^88+8x^89+52x^90+8x^91+23x^92+4x^94+3x^96

The gray image is a code over GF(2) with n=304, k=15 and d=132.
This code was found by Heurico 1.16 in 55.1 seconds.