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

generates a code of length 76 over Z8 who´s minimum homogenous weight is 75.

Homogenous weight enumerator: w(x)=1x^0+56x^75+47x^76+15x^80+8x^83+1x^92

The gray image is a code over GF(2) with n=304, k=7 and d=150.
This code was found by Heurico 1.16 in 2.89 seconds.