I believe I know where you are headed in this. Whether clearcut, or in the dense woods near the clearcut, here is my experience. My 35 Whelan A.I. was given me by my uncle who had P.O. Ackley drill out a standard 30-06 Springfield barrel ( yes, I am name dropping). When completed the rifle, with no changes, held five in the magazine and one in the chamber. There are no feeding problems with this A.I. case. You end up with a rifle that can send 1,500 grains of lead at your target from one loading with 250 grain bullets. With the spitzer 250's they are only 3 inches lower at 300 than the 180 grain bullets from a 30-06 . (200 zero) How many hunters in the woods could take advantage of a 3 inch drop at 300 yards when aiming in a hunting situation? Well designed bullets available now can make this rifle perform a myriad of challenges, newer recoil pads make recoil a non issue with this cartridge. Save the money to be spent for custom work on the 35 Newton and spend it on slicking up your action so you can function it quickly, IF NEEDED. I have fired a 358 Norma magnum and that weapon was more severe than my .375 H&H, so bigger is not necessarily better. My present rifle was fabricated in 1959 and has only required a second shot in all this time for a bear in Ontario. I hope your results will be similar. Velocity is wonderful, but drops from the muzzle, bullet weight always remains the same!
WW
