The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  0  2  0  2  0  2  0  2  2  2  2  2  2  2  2  2  2  4  4  4  4  1  1  1  1  1  1  1  1  4  1  4  1  1  1  1  4  4  4  4  4
 0  2  0  6  0  6  0  2  4  6  4  2  4  6  4  2  0  6  0  6  0  6  0  6  4  2  4  2  4  2  4  2  6  2  6  2  6  2  6  2  0  4  0  4  0  4  2  2  2  2  2  2  2  2  0  4  0  4  6  2  6  2  0  0  4  4  0  4  6  0  0  4  4  4
 0  0  4  0  0  4  4  4  4  0  4  0  0  4  0  4  0  0  0  0  4  4  4  4  4  4  4  4  0  0  0  0  0  0  4  4  0  0  4  4  0  0  4  4  4  4  4  4  0  0  4  4  0  0  0  0  0  0  0  0  4  4  4  4  4  4  4  4  0  0  4  0  4  0
 0  0  0  4  4  4  4  0  0  0  4  4  4  0  0  4  0  0  4  4  4  4  0  0  0  0  4  4  4  4  0  0  0  4  4  0  4  0  0  4  4  4  4  4  0  0  0  4  4  0  0  4  4  0  0  0  4  4  0  0  4  4  0  4  0  4  0  0  4  4  4  4  4  0

generates a code of length 74 over Z8 who´s minimum homogenous weight is 73.

Homogenous weight enumerator: w(x)=1x^0+72x^73+11x^74+16x^75+12x^76+4x^78+3x^80+8x^81+1x^90

The gray image is a code over GF(2) with n=296, k=7 and d=146.
This code was found by Heurico 1.16 in 0.593 seconds.