ORIGINAL: buttermilkranch
if i tune my crossbow with target tips will i need to tune it after i shoot fixed blade broadheads and mechanical broadheads. and what target can i buy that will stop my bolts before the fletching and is made to handle broadheads that wont dull the blades at all. thanks for the help
If everything is perfect, which it rarely is, then all you should have to do when you switch to broadheads. That being said if your broadheads have a slightly different POI then just adjust your sights.
You are going to have to experiment to find a broadhead that has the same POI as your target tips. Use an ASD on your insert that receives your broadhead and spin test them all. Start with one of these - Slick Tricks, G5 Strikers, Magnus four blade Stingers. The all fly really well for me.
My Block and Block 4X4 stops all of my broadheads well before the fletchings. If you want to shoot into something that does not dull your broadheads then shoot into water because there is nothing that will stop your broadheads without dulling them.
Good luck.