I read that Horton recommends 100 gain broadhead weight. Is this true, I would like to use 125 frain heaads
Now that Horton is out of business it will be hard to get anything from them. But they would recommend an arrow broadhead combination for each of their bows. It is only a recommendation to get the same results they got and advertised.
You can make just about any set you want, but you will have to run tests with each combination. I have the Horton Vision and used their recommendation to set my rig. It is up to you my friend.
Good shooting!!!