The generator matrix

 1  0  1  1  1  1  1  1  1  0  1  1  1  1  1  1  0  1  1  1  0  1  1  1  1  1  1  5  1  1  1  1  1  1  1  1  1  1  1 20  1  1  1 20 10  1  0 20  1  1  1  1  1  5  1  1  1  1  1  1  1  1  1  1 10  1  1  1  1  1  1  1  1 20 20  1
 0  1  1  7 24 18 16  0  7  1 18 14  0 16 14 18  1  7  0 18  1 14 16  7 23 12 14  1  5 12  3 16 12 13  6 19 15  9  0  1 21 13 21  1  1 20  1  1 21 12 10 23 13  1  7  4 15  6 22 24  6  4 13 13  1  8 23 17  7  2 10  8  8  1  1  0
 0  0 15  0  0  0  0  5 10 15 10 15 10 20  0 10  5 15 10  5  5 15 10  0 10  5 20 10  0 15 20  5 15  0 15  5 10  5 15 10  5 10 10 20 10 10  5  5 20  5 15 20  5 10 10 20 20 10 10  0  0 20  0  0 15  0  5 20 10 15 10 10 15 10 10  0
 0  0  0  5  0  5 15 15  0 10 10 20 10 10 15  5  0 10 15  5 15  0  0 15 10  5 10 20  5  5 20  5  5 10 15  0 10 10 20  5 15 15  0 10 10 15 20  0  0 20  0 15  0 10 20 10  0 20 15 10 15 20  5  0 10  5 15  0  5  0 20  0  5  5 10 20
 0  0  0  0 15 15 10 20 20  5 20 20 10  0  0 10 15 15  0  5  0  5 15 20 15 15 10  5  5  5 20 10 15 10  5 15  0 15 15 15 20 20  5 10 15 10 15 10  0 10 20  5 20  5 15 15 15 20 15 15 20  5 20  0  0 10  5 20 10 10  5  0 20  0 20 20

generates a code of length 76 over Z25 who´s minimum homogenous weight is 280.

Homogenous weight enumerator: w(x)=1x^0+116x^280+40x^281+40x^283+20x^284+772x^285+140x^286+340x^287+580x^288+400x^289+1880x^290+820x^291+1140x^292+1160x^293+1340x^294+3620x^295+1660x^296+1720x^297+2140x^298+2040x^299+4768x^300+2660x^301+2920x^302+2740x^303+4040x^304+7196x^305+3920x^306+3420x^307+3300x^308+3320x^309+6076x^310+2320x^311+2280x^312+2060x^313+1340x^314+2688x^315+940x^316+680x^317+480x^318+512x^320+156x^325+124x^330+92x^335+52x^340+48x^345+20x^350+4x^355

The gray image is a code over GF(5) with n=380, k=7 and d=280.
This code was found by Heurico 1.16 in 13.7 seconds.