The generator matrix

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

generates a code of length 78 over Z8 who´s minimum homogenous weight is 74.

Homogenous weight enumerator: w(x)=1x^0+74x^74+220x^75+168x^76+136x^77+86x^78+88x^79+25x^80+52x^81+25x^82+36x^83+32x^84+28x^85+20x^86+8x^87+8x^88+2x^90+8x^91+6x^92+1x^98

The gray image is a code over GF(2) with n=312, k=10 and d=148.
This code was found by Heurico 1.16 in 0.195 seconds.