My bullets are made one at a time, using the same dies each time. This Makes The Bullets Identical. Cores are fluxed and melted into each jacket. Core and jacket are 100% bonded. I removed a 180 grain .308 bullet from a dead moose, it weighed 177 grains. These bullets are not for target practice. They are labor intensive to make. I am make (7mm/.284 and 30 cal/.308.) I can make any weight you like. The jackets are Berger J-4, 27 cents ea. Ask for any quantity, $1 ea., or $50 for 50 bullets. 130 to 250 grains ea.