5.45 has flat trajectory compare to 7.62 means more long range. And you are right that 5.45 ammo is lighter than 7.62👍 That original 222 is a gem of rifle but ammo price is insane nowadays☹️
Thanks for the great info. These are excellent rifles but sadly average consumer prefer Saigas and Molots in 556 because of expensive 545 rounds. These are preferred more by collecters.