Northman999............The 300 Wby which you say the OP is wise to pass on, is along with 300 WM and 300 RUM one of the most versatile all around cartridges ever designed. They have no limitations, except the shooter, in NA hunting and do everything as well or better than the 308-270-30-06, group of cartridges. A man buying a 300 Mag is not over gunned or an overkill fanatic. I understand that with all the new optics today trajectoy isn't as critical as it once was and flat shooting doesn't have as great an edge on the 308 or '06, HOWEVER, it does still have a large margin in "time of flight" which is where wind effect, the possibility of an animal to move etc, comes into play. This can only be minimized by increased velocity. The added bullet weight and higher velocities also increases ballistic coefficient, which in turn reduces effects of wind, flattens trajectoies, and increases energy on target.
I would advocate anyone who wants one to certainly go and buy a 300 Mag, there is no down side and the recoil is not ridiculous, there are guys on here recommending 338s all the time as well as 9.3s and 35 Whelens, all of which are in the same or greater recoil family and do nothing the 300 mags won't do as well with a 200 AB or a 200 Part.
I fell in love with my 300s a long time ago before range finders were in every mans pocket, and adjustable scopes were only just coming on to the sillhouette range. They made it possible, no actually easy to take any animal out to 450+ mtrs with one sight in range and one cross hair in my scope, and this is still valid today. I can guarantee that set up with my 300 Wby beside another shooter with the same experience and a 308 with a range finder and an adjustable scope I can hit a target at 500 mtrs twice before he gets his gear all tuned in and fires his first shot, and then pull down to 200 mtrs and make 2 more hits before he readjusts his scope again. I don't have to think about where I had my scope set last, was I shooting 500 mtrs? or was it 400 mtrs? or was it 100 mtrs? My scope settings NEVER change once Ive sighted my rifle in and I KNOW where to hold out to 500 mtrs or so. I do not make it a habit of shooting at game beyond this range but I have and can make these hits as well, as long as I know the range (rangefinder), because I know my rifle and cartridge, and I know when it gets to 6 or 700 mtrs that if I have done my job, my chosen bullet, from my chosen cartridge (300 Wby) will not pinhole and let me down due to velocities below expansion thresholds.
Okay, we all know the advantages of the big 30s at extended ranges, my question would then be, what disadvantages does a 300 mag display at any range on any size of game. I have never found one, it kills cleanly and efficiently at 20 mtrs, 50 mtrs, 100 mtrs, 500 mtrs and beyond............30 lb animals, 100 lb animals, 1000 lb animals, 3000 lb animals........USING THE CORRECT BULLET !!!
An analogy..............do all you 30-30, 308, 30-06 shooters drive Smart cars (you know the ones, the little tiny ones from Mercedes), because that`s all you really NEED, they will do the speed limit and get enough groceries for a week and get around good enough........OR, do you drive a 4 wd pick up because you want your vehicle to do more for you, it burns twice the fuel, the tires cost 4 times as much to replace and they cost 3 times more to buy.........but dammit I want a truck, oh ya and let`s not forget that rougher ride. The 300 mags are the 4 wd pick ups of the rifle cartridge world, they do everything you want them to and don`t have any shortcomings, but they cost a little more to shoot and have a little rougher ride. The reality is the 300 mag family of cartridges fulfills every need without compromise from the 223/22-250 class of cartridge right through the .375 family.
I am really getting tired of people maligning one of the best family of cartridges to ever be developed since the turn of the last century !!!