Giggle...
Been down the same path - years ago, I bought a Rem 700 VS (1-14") and when I'd put about 5K through it - realised I wanted (needed?) a new barrel.
I wanted something heavier for distance and wind, but still wanted the speedy 50-55 gn BT's to do their thing...
You know, compromise.
So, I put a 1:11.5 Truflight barrel on it about 10 years back...
But, it's just the wrong twist for anything serious at long distance.
Basically, just about the only slippery bullet you can use is the 60gn Nosler BT.
Have to check my records, but IIRC, the 69 HPMK keyholed.
And there's nothing much else you can use above 55 gns (happy to be shown something, but...)
(Not counting gamekings or very open HP bullets).
But with the 60 gn BT, I took it out and was doing fairly consistent head shots on silhouette targets at 600 meters a few weeks ago (rain/snow/wind), plenty accurate, but not the smartest of moves. To be fair, my requirements have moved on - I was doing a lot more varmint shooting then, and more long-distance target now.
If it was today - I'd be looking at 80+ gns and twists around 7 or 8 with >3100 fps