Our guarantee is absolutely NO BS. If for any reason you are not satisfied with our bullets you may return them for a 100% refund or exchange within 30 days. Even if you just ordered the wrong bullets. you can exchange them for the difference in price. Please return them to: Chey-Cast Bullets, 1531 Otto Road, Cheyenne, WY 82001. Return shipping cost is the responsibility of the customer. If you have any questions you may call us at (307) 778-6636 or send us an e-mail to firstname.lastname@example.org.