Syonyc, welcome to TFL!
I do not own any Savages (yet), so I won't address those.
However, steel vs brass "rounds" I can clarify for you. The cartridge case that most manufacturers use are made out of brass. As long as it is boxer primed, brass cases are easily reloaded. However, brass is more expensive than steel.
Some manufacturers, and especially some Russian-made ammo, uses steel cases to reduce cost. Steel is harder than brass, leading to come concern over damage to firearms when shooting this ammo. I have yet to hear or see first hand any damage caused by steel cases.
In order to further reduce costs, some of these same manufacturers who produce steel cased ammo also use cheaper powders that leave more residue. Hence, you will hear a lot of reports of rifles being more dirty after firing this ammo. An important note is that steel cases are not reloadable.
Hope that clarifies it a bit.