I used the 243 loaded with Hornady's 100 gr bullet to take alot of elk. Never had much problem. It may not be the best elk round in the world but it certainly will work.
Once she gets used to the 243 then maybe you could move her on to the 7mm-08, if you can talk her out of the 243 .

the most expensive bullet there is isn't worth a plug nickel if it don't go where its supposed to.
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