Ah, how soon we forget about the other cartridge/bullet topics...
If your intention is to 'reach out and touch' something as in hunting then either of these combinations with a bipod works great in my experience. I want energy and distance in a combination for most situations I will run into. I want something more than 300 yards and minimum energy transfer.
Both of these combinations will run through the 2.925" magazines used with the chassis. I know, I shoot these.
There is the .257, 131 gr. Blackjack bullet when combined with the SAUM case becomes what you need for a 'truck gun' configuration. From a 20" barrel you increase your maximum yardage to 800 yards retaining almost 1,100 ft/lbs. of energy. This is an excellent cartridge for longer ranges and killing power.
If .25 caliber isn't enough, then I would opt for a straight 7mm RSAUM using the 168 grain Berger Hunter VLD. Here you will gain an extra 50 yards over the .25, extending your range to 850 yards retaining 1,100 ft/lbs of energy.
Here is the stock I'm working with currently to use in some overseas competitions. Note the folding buttstock covers the bolt handle as a safety feature. As with all of the MDT chassis, the ergonomics are adjustable by interchanging parts. I needed just a few minutes to get the lop and cheek height set for my comfort.
Enjoy the process!