The Thompson Center Original Maxi-Ball has been used extensively by target shooters and hunters for almost 20 years. Utilize wide lubricating grooves and are pre-lubed with Natural Lube 1000+ Bore Butter. Its reputation as an exceptionally accurate bullet which is easily loaded in the field is unequalled. Per 20. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Bullet.