i have been Blackpowder hunting for quite a while now and have a Traditions in line gun......now i have been shooting 100 grains of Triple 7 powder.....now a guy that has been blackpowder hunting a long time told us that each gun is a little diffrent in what ammount of powder shoots right out if it......he says that if you have too much powder that it will start to throw the bullet around and it wont shoot right...he also said that you can look at the Sabot after you shoot it and tell by how it looks how much powder you should shoot.......any of you all know about this? any truth to it