Think about this.
Ken, I know your question was about what make of rifle would cover both hunting and shooting comp. But I want you to think about how much money you are going to spend. I am in the middle of doing exactly what you are about to do. I bought a Pedersoli model to do both, hunting and comp. shooting. The hunting part is one thing, maybe you can get by with buying a few rounds to hunt with. The comp. shooting is another story! This is where the money comes in to play, reloading equipment, casting equipment, building a reloading bench, reloading supplies such as brass, powder, primers, lead, and tin. Get ready to spend $1500 to get started down this road. Don't forget what you will need to use at the range, a mat, timer, shooting sticks, spotting scope, and so on.
Take some time, go to range and talk to the guys shooting comp. Take notes to what all you will need and where to buy it from, get some prices, then make up your mind.
I'm not trying to talk you out of it, I'm buying equipment right and left and have asked myself a couple of times, did I really want to do this. I'm in too deep to look back now, I just hope it is not something I loose interest in down the road in a couple of years.
I bought a used Pedersoli 45-70 longe range rifle and have almost finished restocking it with a fancy Claro Walnut stock. It will be heavy to hunt with, but I put more on the shooting comp. part than the hunting part. I know some will say if I was going to all that trouble I would have just bought a Shilo. Well I like working with fancy wood, and there is a lot of enjoyment and pride in doing it yourself, and this was a perfect excuse to do it again.
If this turns out to be as much fun as I think it will be, I'm sure I will want more than one rifle. Here comes the Stevens, and a Shilo into the stable.
So if you buy a Pedersoli used, and the euipment to reload to shoot comp. you are looking at about $2800 to $3000. If you buy a Shiloh used you can tack on another $1500 to $1800.
If you buy one to cover comp. shooting it will be heavy to hunt with, if you buy one to hunt with I don't think you will be happy with it on the comp. front. A Ruger single shot in 45-70 to hunt with would be a lot cheaper. Anyway you decide, then go for it and don't look back!