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  X  1  1  X  1  X  X  X  X  X  X  X  X  1  1
 0  X  0  X 3X 3X  0  X 3X 2X 2X 2X  0  X 3X 2X 6X 6X 6X 6X 3X 6X  X  0 2X  X 4X 4X 4X 4X 4X  0 3X 2X 6X 4X  0  X 3X 2X 6X 4X 5X 5X 5X 5X 5X 5X 5X  0  0  X 3X  X 2X  X 3X 3X  X 4X 2X 4X 3X  0 3X
 0  0  X 5X 3X 2X 4X 2X  X 5X  X 4X 5X 4X  0 2X  0  X 2X 6X 5X 4X 6X 6X 3X 3X 4X 3X  0 6X  X 3X 4X 6X 5X 2X 2X  X 6X  0 3X 5X  0  X 3X 2X 6X 4X 5X  0  X 5X  0 4X 5X 3X  X 6X 6X 4X  0 5X 5X 3X 3X

generates a code of length 65 over Z7[X]/(X^2) 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 linear code over GF(7) with n=455, k=4 and d=379.
This code was found by Heurico 1.16 in 8.54 seconds.