The generator matrix

 1  0  0  1  1  1  1  1  1  1  1  1  1  1  1  1 35  1  1  1  1  1  1 14  1  1  1  1 42  1  1  1  1  1  7  1  1 35  1  1  1  1  1  1  1 28  1  1  1
 0  1  0 35 21 42 36 30 31  1 16 38  4 34 18 48  1 29  3 41 46  2 10  1 12 14 11 20  1 36 25  9 43 24  1 37 47  1 10 18 44 22 17 37 27  1 21 22  0
 0  0  1 36 31 16  5 18  7 25 34 10 47  9  8 48 39 13 39 22 37 35 20 40 29 26 17 45 17 21 32  2 38 19 29 28 44 37 41 23  4 27 17 20  1 14 26 15 46

generates a code of length 49 over Z49 who´s minimum homogenous weight is 280.

Homogenous weight enumerator: w(x)=1x^0+2262x^280+4326x^281+1638x^282+630x^283+756x^284+798x^285+1764x^286+7356x^287+12432x^288+4326x^289+3150x^290+2016x^291+1344x^292+1764x^293+9834x^294+13902x^295+4956x^296+6510x^297+3402x^298+1974x^299+2646x^300+11694x^301+14616x^302+3486x^303+12x^308+18x^315+30x^322+6x^329

The gray image is a code over GF(7) with n=343, k=6 and d=280.
This code was found by Heurico 1.16 in 3.51 seconds.