I have a .243 in the same gun topped with the Bushy elite 2-6x. Dropped a small doe at 210 yards two weeks ago - neck shot. Using it above 4x is a pain because it has a very long (but consistant) eye relief. So your FOV is limited. I was in a ground blind and using shooting stix. I have it mounted using the TC steel mount which limits how far forward you can mount it. But I wanted a 1-piece mount. I keep the scope on 2x while hunting. If I have a long shot and have the time, then I increase power. You can try it with a Weaver style base and mount it very forward to minimize arm stretch. I have long arms for my height. My dress shirts have 37" sleeves and I have to stretch to get the scope in the right spot.
I tried both the Nikon and Burris. I was disappointed. The eye relief changed a lot with zoom.
I use the Bushy Trophy XLT on my 17 HMR S&W revolver. It works well. I am not sure how well it would hold up to a .243 or .308.