Linear compensator, shot package and small bore max out the range. Small bore takes away one round from the magazine and decrease reload time, but the range increase is worth it to me. It's my go to crucible shotgun cause it has a little better fire rate than fellwinters lie (which has saved my butt quite a few times)

Keep the matador 64, its my favorite shotgun for both pvp and pve, just try to reforge it at the gunsmith and try to get shotpackage, that makes it a million times better