Think of this way... (just work with me on this) what's it take to adjust the accu-trigger? A little tool that comes with the rifle. What's it take to change caliber? A spanner wrench to loosen the ever loathed barrel nut (which I don't find unattractive) screw everything apart, put the caliber of choice on for the day set your head spacing (10 to 15min job if you know what your doing). Pull the bolt out, unscrew the bolt assembly screw, put the correct bolt head in place (free floating for accuracy) and put back together. The stock is of indecent quality, unless you get their laminate, accul-stock, or any of the precision stocks offered in their tatical line. I will say that there non-accu-stock synthetic is very tupperwarish, but it is pillar bedded and offers very good accuracy.
So after following those steps, you now have gone from a 17Fireball to a 338 Lapua or Edge in a matter of 15 minutes. If you write the scope settings down, you find your zero on your previous settings in the caliber, bench it to ensure your zero (may have to make a minor adjustment because you took the action out of the stock, accu-stock that is not a concern or if you have Devcon put to it) and go hunting or F-class shooting.
How many guns can you do that without having to spend money on a smith to set your trigger, pull your barrel off, or spare the expense of another entire bolt assembly? The only extra expense you will have is a bedding job if you can't do it yourself, the price of the new barrel and having it threaded to match the action and a muzzle break if you want one, the spanner wrench, a bench vice if you need one to help hold the barrel or action, and head spacing gauges.
Some companies like Shilen, and Lothar Walther offer drop-ins that are pre-threaded. All you have to do is screw them in and head space them. Short of the high end multi thousand dollars rifles that allow you to switch barrels with a few screws, it doesn't get much better. That is why I like the Savage line. I'm sure their sales department has thought about this, but they know most people are to lazy or scared to try it on there own. There only a few, maybe 6-7% which is probably high, of hunters who are willing to smith their own rifles.
Sorry it's so long. Just wanted to try and explain my position on these rifles.
Tank