The 577 Nitro can be found in 2 3/4″, 3″ and 3 1/4″ versions and we now have the longest (3 1/4″) in stock, which provides complete flexibility. Taking a 750 gr bullet this cartridge is meant for only the largest game and under difficult conditions. The shipping weight for 20 cases is 510 grams. This price is for 20 cases.