I used to shoot a 35 Whelen in a t/c encore. I traded for a 358 winchester mgm barrel. I can't tell the difference in killing power on deer. It does an awesome job. It just doesn't kick as much as the 35 whelen. You can trade in your 35 rem barrel on edstc.com for a 358 barrel. He gave me 200 trade in on the 35 whelen barrel and the 358 was 295 plus shipping. You may be better doing that instead of reaming the barrel you have. I shoot the 200 grain Hornady interlock factory loads in mine.
