I'm coming into this late but there's nothing wrong with a rebore. Cliff LaBounty rebored my 1941 model 70 to 35 Whelen and with any 250 grain bullet it thinks it's a varmint rifle. I also had JES rebore a Sedgley Springfield to 375 Whelen. He did a great job, the gun was very accurate, and it was ten days from my door back to my door. In Alaska. My late friend and hunting buddy had him do several rebores over the years and has been well pleased with every one.
I left my 35 Whelen 24 inches and have hunted some pretty tight cover with it. I never felt the longer barrel hampered me in heavy cover.
