Seeing as how BERETTAUSA.COM is having a significant sale on these for this Father's Day Weekend, ($319)I decided to buy one. I saw they had pretty good reviews and seem to be well made. For you folks who have owned one, fired one or are knowledgeable in this area, what advise do you have? What are some definate "do's" and "do not's"? Case in point, I understand that after loading the cylinder, the openings should be sealed in lube. I understand that this is to prevent simultaneous ignition of the rest of the loads when firing. Does lubing up the openings prevent sparks from ingiting the other loads or is it a different reason? Thanks!