Do a bit of homework:
Determine gauge (shotgun) and caliber (rifle) you think may be best for your needs.
For rifle I prefer 30-06.
For shotgun, recoil may/may not be important to you. If you plan to kill ground hogs with the shotgun, I would suggest a 12 gauge. They are REALLY difficult to kill.
Once you have this determined, go to a GOOD shop that has a wide selection of firearms. (In this area, Bass-Pro is THE shop).
Find a salesperson, and hold several different guns in a shooting position. Check how they feel against your shoulder, work the safety and see how it feels; in other words, find a weapon that fits YOU.
Personally, I like the recommendations above; all of my firearms are Remington.
Jon.
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"Good carburetion is fuelish hot air". 
"The most expensive carburetor is the wrong one given to you by your neighbor".
If you truly believe that "one size fits all" try walking a mile in your spouse's shoes!
Owner of The Carburetor Shop, LLC (of Missouri).
Current caretaker of the remains of Stromberg Caburetor, and custodian of the existing Carter and Kingston carburetor drawings.
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