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  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  7  1  1  7  1  7  7  7  7  7  7  7  7  1  1
 0  7  0  7 21 21  0  7 21 14 14 14  0  7 21 14 42 42 42 42 21 42  7  0 14  7 28 28 28 28 28  0 21 14 42 28  0  7 21 14 42 28 35 35 35 35 35 35 35  0  0  7 21  7 14  7 21 21  7 28 14 28 21  0 21
 0  0  7 35 21 14 28 14  7 35  7 28 35 28  0 14  0  7 14 42 35 28 42 42 21 21 28 21  0 42  7 21 28 42 35 14 14  7 42  0 21 35  0  7 21 14 42 28 35  0  7 35  0 28 35 21  7 42 42 28  0 35 35 21 21

generates a code of length 65 over Z49 who´s minimum homogenous weight is 379.

Homogenous weight enumerator: w(x)=1x^0+294x^379+168x^385+924x^386+48x^392+210x^393+126x^399+630x^400

The gray image is a code over GF(7) with n=455, k=4 and d=379.
This code was found by Heurico 1.16 in 8.63 seconds.