So would a model 7 in 7mm-08, I'm sure it's plenty big enough for groundhog, ok so I have a Bias.MSR's are illegal for big game in Pennsy so my vote is for a Model 7 in .243. It'll double as a groundhog gun.
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I'm thinking .243 probably would be ok for groundhog and might make a good varmint cartridge in the right rig.
I read your lot use .243 on White Tail and Mule Deer with great success.
My wife's Weatherby Girls Hunt 2 is made on a Howa 1500 action with a Bell and Carson stock . I think there might be a youth model same thing different colour. it's a nice light carry rifle.