Couple options.... Sell the gun and put the money into a heavy, fast twist barrel, upper and trigger for your existing AR. Keep your original upper and you can have a carbine and target gun all in one package.
Next, consider a new barrel in .243 for your existing Savage. All it takes to swap barrels is a barrel nut wrench and a set of go/no-go gauges. BTW, the same gauges work for .243 and .308 so you can swap back to a .308 in 15 minutes without any additional cash.