I have a new in-line CVA .50 cal ML. I ordered some Thor Lightening one size diameter bullets to try as we cannot use sabots in Colorado. These are suppose to not require the sizing pack like their Hammer bullets. They are suppose to be tight fitting in the barrel but these seem extremely tight. I'm not sure that the recommended 30 lbs of pressure would force the bullet down the barrel. Does anyone have an any experience with these bullets?