I won a 7mm-08 rifle last week and have been busy learning about it. I was wondering what different factory ammo is available. I have found Remington, Hornady, Winchester in 119/120 grain and 139/140 grain and even a 150 grain. I was wondering if there might be a factory 100 grain to use for groundhogs and small targets. Since I am new to rifle shooting could someone tell me the difference between the different types of bullets (ballistic tip, FMJ, etc)? Also, does someone have a link to pictures of different calibers and types of bullets to compare? Thanks.