what caliber are you pulling down? Thunder Bird in Phoenix Az pulled down about a million 308 & 223 rounds that were over loaded by about 1 grain. I bought several bags of these bullets and they shot fine. I have pulled bullets from ammo I had sold the gun for .I used the powder and bullets in other ammo with great results. I have used an inertia type puller and modifdied pliers to pull bullets. Mangled bullets MIGHT not be as accurate as pristine ones,but just think about the stress put on the slug when fired. If the round fits the chamber,I'd probably shoot it. A little practice and you will be able to pull bullets with almost no visual damage.