Want to Get Into Loading/Reloading

[ropeman]

Know of anyway to gauge a bore to see what tolerance it will allow?

Here's some good info and a good site for reference.
http://www.handloadersbench.com/forum5/20203.html

If you want accurate results you need to get every little bit out of the ammo. You won't be able to make a drastic difference by only changing one factor of the ammo.