i have a simmons 2-7x44mm on my marlin 336cs, and i love it. wouldn't trade it for anything as it makes in my opinion the perfect rifle/scope combo for whitetail.
the .30-30 is a death ray on whitetail in the cottonwoods, river bottoms, brush, and alfalfa fields where whitetails are found. the 2-7 magnification is great for the ranges at which whitetails are found, i.e., out to 200 yards, which is perfectly inside the range of the .30-30. finally, the 44mm objective allows for clear, crisp and bright vision at dawn and dusk, which is the time that i see the greatest majority of whitetails in the habitat described above.
i ahae heard good and bad about simmons, but when speaking of this scope (the simmons 44mag) three things cannot be denied. the first is that this scope has FULLY MULTICOATED lenses, not just coated lenses, not just multicoated lenses, and not just the ocular and objective lenses. this is a sign of good quality, for they would ahrdly take the time to fully multicoat their low-end line of scopes. the second is that simmons has a lifetime warranty, which makes it a reasonable buy and a good investment. the final thing is that this scope is made in the phillipines, not in china. i cannot overstate the fact that a chinese scope is junk. all-in-all, the simmons 44mag is an affordable option when looking for quality optics. sure, we would all love to put leupolds and swarovskis (did i spell that right?) on our rifles, but this is not always economically feasable.
if you already have this scope, my opinion is that you should mount it and use it. the relative "weight" of this scope is not much compared to the benefits, especially on a gun that is already light and can afford a couple of extra ounces. i found this scope and rifle combination to be lightweight and with a little practice and a 200-yard zero, you will be good out to 230 yards within an 8-inch kill-zone using 150-grain remington core-lokts. you will be able to take any shot that you might encounter with confidence that comes from being able to see it clearly, which will improve your chances for a good shot and a clean kill.