The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  0  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  7  1  1  1  1  1  1  1  1  7
 0  1  1 31 16 48  4 19  0 36 31  1 16 19 48  4 36  7 38 26  9  9  6  6 44  7  3 14 34 45 13 29 43 14 43 38 35 45  1 28 29  3  1 46 26 46 32 11 32 40 40  1
 0  0 35 21 42  7 14 21  7 28 14  7 35  0  0 28 42 14 42 28  7 21 35 21 14 35 28 42 14  0 28  7 21  0 35 14 35 28  7 14 28 21 14 42 42  0  7 21 35  7 14 35

generates a code of length 52 over Z49 who´s minimum homogenous weight is 301.

Homogenous weight enumerator: w(x)=1x^0+72x^301+252x^302+420x^303+1260x^304+882x^305+3150x^306+144x^308+672x^309+630x^310+1008x^311+294x^312+756x^313+48x^315+1134x^316+1008x^317+1848x^318+882x^319+2268x^320+18x^322+30x^329+18x^336+6x^343+6x^350

The gray image is a code over GF(7) with n=364, k=5 and d=301.
This code was found by Heurico 1.16 in 95.9 seconds.