You can figure that a standard Mod 700 BDL 7mm RemMag/300Wm and a 2.5x8 or 3x9 Leupold will weigh a tad over 9lbs when loaded. Tens of thousands of them are used ( I did myself for years). So nah. What you may find is that you actually "need" ( there, I said it) two rifles....one heavy for LR, whether its on the Beanfield or Prairie, and a lighter 7.5# for mountains or Still Hunting, etc. Case in point...I like a lively handling rifle, and my "heaviest" was the aforementioned 7mm Mag BDL. It was fine, bit not as lively as I liked for the woods. When I moved to Utah, I only had my uncles old 1917 Sporter w/4x Tasco ( I was fresh out of Bible college) and it weighed 10+lbs. It was a shooter, but way too heavy for the mountains "for me". I bought a Mod 700 280 Mtn rifle, loved it! Then, in '93, I went on a real "Guided , Combo Mule Deer/Antelope hunt out of Laramie. Am & PM we went up into the hills, was a perfect rifle for that. middle of the day we out on "the short grass" prairies. OMG, the 'wind" not only blew my bullet off course ( I missed 5 bucks in a row around 350yds or so) but it blew "me and my rifle" around! I was either sitting supported or sitting/shooting sticks and it was awful. I later killed a 15 1/2" pronghorn when I stalked up behind a snow drift fence and "wrapped myself" up in it, ha. I got him at 200,
Later in life, I found that a 9+ lb wood stocked Mod 700 Classic 300WM worked fine in the open dunes of Namibia, but even there, I never shot game past 375yds or so. I am amazed at these LR Hunters, I don't know how they do it, ha. At 67, bolted together now, I don't go far from the truck anymore either. So, trying to "make do", for me, "won't do". If I take a light rifle out on the prairie, I just focus on getting close, like I do in the mountains. As mentioned by many here, 'try out" and see what "you" like. Have a ball dude!