Grizzly Cartridge Company and Cast Performance Bullets are manufacturers of high-performance big-bore handgun and rifle ammunition.Never settling for second best, the result is a company whose bullets and cartridges will deliver exactly what you need every round, every time.About our bullets:• Our hunting bullets are cast from LBT style molds.• Our bullets are cast from virgin alloy and heat-treated to a Brinnel hardness of 18-21. This provides for a hard yet ductile bullet, which will not fragment, or blow-up on the toughest hide or even bone.• We manufacture both gas checked and plain base for most popular handgun hunting calibers.• Our bullets do not lead your bore. Our lube has allowed us to shoot our cast bullets in test rifles as fast as 3100 fps.• Loading data is included with most of our products.