What is a BDL or ADL?
BDLs have a
floor plate that opens up to drop the un shot rounds out of the bottom metal, they are also finished a bit better.
ADLs have a
blind floorplate, this means that the rounds must be cycled through the bolt to unload the un shot rounds.
Both have lighter barrel profiles than that of the target or tactical style rifles and also lighter wooden stocks. This makes them way easier to carry in the field, but gives a disadvantage when at the target range. The lighter barrels heat up much faster than the heavy profiles, thus causing you to fire shots more slowly to allow the barrel to cool. The bullets point of impact can shift as the barrel heats, and also the thinner barrel is 'whippier' causing a slight degradation in pure accuracy. Also, the light weight causes more felt recoil for any given caliber.
For the price point you mentioned Savage is a good rifle to begin with.
The floating bolthead on a Savage is what makes them some of the most accurate factory rifles you can get. However, the stocks, triggers, barrels and finish are not that great, but to get the rifle up to par, aftermarket parts are readily available and pretty easy to install. In fact, the target rifle I shoot now is a semi-custom I built myself. It can shoot bugholes, as long as I can hold right...
Then again after you buy a better stock, trigger, barrel, bolt handle, bolt lift kit, yada yada yada, you'll still end up spending a pretty penny.