I had a BAR in .338 for awhile. It was back in the late '90s. I wanted to see how they shot, though, at the time, I had two bolt guns in .338 Win and 300 Win. I decided to give it a Bible school classmate of mine who wanted to hunt elk, but hated recoil so I ended up having it MagNaPorted . It was indeed very soft in recoil then. I only shot the Winchester factory 200gr Ballistic Tips in it, but it was a tack driver! My Belgium made BAR in .270 shoots some loads very well (sub moa) and a guy in my church has a BAR in 30.06 that is also a shooter.
Back in the late '60s, when I was 16 (44yrs ago!) I worked for a furniture store whose owner hunted deer every year out in West Texas. He had a Belgium made BAR in 30.06 and his only gripe was that it only handled the 180gr loads. He claimed it would jam with the 150s, all these factory loads then. Those 180 Corlokts were pretty tough to use on Hill Country whitetail with many running a long way before expiring. Another young guy, later in the mid '70s had a .300 BAR and I had a 7mm Remmag BAR. He shot a lot of deer with his, I shot only one. I got good accuracy with it, but that particular rifle was a jamomatic for some reason. It was 20yrs later before I bought the above mentioned .338. I got this .270 in 2001, and it is a sweetheart. Good luck to you!