Back in the 1980's when I started loading the Swift, I used IMR4895 for 50-55 grain varmint bullets and IMR4350 for the 60-grain Nosler Solid base, about as good a .224 big game bullet as was available back then.
Have had several Swifts since. In the most recent rifle, a tang-safety Ruger 77 identical to my first rifle, Ramshot Hunter worked great as an all-around powder for 50-60 grain bullets, but the 1-14 twist wouldn't shoot the 53 TSX consistently at any elevation below about 5000 feet, even on warm days.
