My 3 3/4" Vaquero Birdshead just sprays bullets all over the target, even from a shooting rest. Also, I can feel a constriction where the barrel screws into the frame. SO, I'm going to bite the bullet (YUK! YUK! :-D ) and fire lap the bore. If that does not get the job done it'll get rebarreled (with a 5" custom barrel). It either has to shoot straight or I'll sell it to the first sucker that comes along! :twisted: