The only dumb question is one not asked. If loading rifle I suggest getting the Hornady Overall length gauge
Midway to determine where your rifle lands are with a given
bullet. Most start 0.015 - 0.030 off the lands and adjust from there after they have found a load that works (if you don't know what I'm talking about read about bullet seating depth in rifle).
Most the time, rifle seating depth will be longer than factory loaded ammo as factory ammo has to work in all manufacture's chambers.
Also, I suggest reading the tacked threads above and picking up a couple of reloading manuals and read the front sections. The ABC's of reloading is a must for new reloaders along with one
or two of the following: Lyman 49, Hornady 8, Nosler 7, Sierra 5th(or 6th don't remember which I have).