Welcome to DRTV Bowtech.
200yds? With open sights? Hunting while out for a spin?
For that range, perhaps a bolt action, 25-06, 7mm-08, .270, or 308. I think the majority of shots will be less than 200yds, but okay, here's some other ideas. Even a Puma lever action in 44 would work, depending on what you plan to shoot at.
Interesting Read. Here's the link and a segment.
http://www.chuckhawks.com/practical_accuracy.htmThe smallest of these animals offers about an 8" diameter heart-lung kill area and most offer at least a 10" kill area. So, to be conservative,
let's say that our rifle needs to be able to put its bullets (from a cold barrel) into about a 6" circle at whatever range our skill and the trajectory of the cartridge we are using allows. This leaves a little room for error on even the smallest medium game animals.
For the hunter using a 100-150 yard hunting rifle, such as rifles chambered for what are fundamentally pistol cartridges (.357 Magnum, .44-40, .44 Magnum, etc.) or low pressure cartridges like the .38-55 and .45-70, a 4 MOA group will suffice. 4" groups at 100 yards don't look very impressive at the range, but 4 MOA groups mean all bullets within a 6" circle at 150 yards, about the maximum useful range of this class of cartridges.
A .44 Magnum rifle that will put all of its bullets into a 4" circle at 100 yards is a deadly deer rifle, as accurate as it needs to be.
A 200 yard hunting rifle, such as a .30-30, .35 Remington, or .444 Marlin needs to print 3 MOA (3") groups at 100 yards. This means that all of the bullets will be landing inside of a 6" circle at 200 yards. A North American hunter can take any deer, sheep, pronghorn, or goat with such a rifle. In Townsend Whelen's day, few hunting rifles would shoot better than that. Many will today, but practically speaking it doesn't matter. 3 MOA is good enough for 100% kills out to at least 200 yards. A 200 yard rifle that shoots 1 MOA groups is not one whit deadlier than one that shoots 3 MOA groups.
The hunter with a long range rifle capable of taking medium game at 300 yards (such as a 6mm Remington, .25-06, .270 Winchester, 7mm Remington Magnum or .300 Winchester Magnum), needs a rifle that averages 2 MOA groups. Those 2" groups at 100 yards will open to 6" at 300 yards. Very few hunters can take advantage of more accuracy than that in the field, so 2 MOA represents the practical limit of accuracy for most hunters. I am sure that Col. Whelen would have classified such a rifle as very "interesting." Of course, it is nice if Old Betsy will shoot even smaller groups at the rifle range, but it is simply not necessary from a practical standpoint.
Marlin is a good choice. But it depends on what your going after.