Hi there everyone, im new and getting ready to start reloading for the first time. Im needing to know what i need to load different calibers of rifles, like, a load data for how much grains of powder to use and to get the right size bullets with a ELECT DIGITAL CALIPERS. I have a rock chucker rcbs press and will be loading a 22-250 and a 222 rifle, and need to know how much powder to use and the right size of bullet when im done reloading it. thank you for your time