I'm new to muzzleloading, so I hope this isn't a stupid question. Just recently purchased a .32 caliber percussion Pedersoli Frontier for my son and I to do some squirrel hunting. Have shot it upwards of about 50 times now. At 25 yards from the bench and sandbag it is shooting 4 to 6 inches low. Everything I have read says to file down the front sight to raise it on target. Was wondering how to go about doing this. Is there a special type of file I should use or just a simple metal file? Do I need to put the gun in a vise to file it, or can I do this from the shooting bench? I know your supposed to file off just a bit at a time and then test fire,etc. Hope this all made sense. To be honest, I'm a bit apprehensive about doing this since I've never done it before. Thanks for your help!