Most barrels can be straightened or adjusted with a proper barrel press. I built my own press many, many moons ago for my shop. I used to do a google of shotgun barrel work as well as straighten the occasional rifle barrel. When building a custom rifle, the barrel that you are chambering, at times, is not true and needs to be straightened. My barrel press is fully adjustable for just about any situation. NOTE: If your barrel has been bent badly from abuse or accident, there is no hope.....
Dosn't matter what day of the week it is, the best day is the day with your finger on the trigger--jra