Twist is so important in any gun. I shoot mostly revolvers and the Ruger 1 in 20" can handle up to 330 gr boolits. A rifle can shoot faster so you might not want as fast as it can go. There will be a sweet spot.
I look at the S&W 29 with a 1 in 18-3/4" rate and 240 gr boolits in flight will rotate around the flight path but are still super accurate. Go to a 250 to 265 and the boolit stops the rotation. The Ruger 1 in 20" will not rotate with a 240 gr. yet will stabilize heavy boolits. The only thing is you can not slow the heavy boolit because not enough spin is a slingshot or BB gun. As long as you keep pressure in limits, you can make a lot of boolits shoot. I much prefer a faster spin anyway since you can reduce velocity and still spin up.
You can't make the little 44 fast enough in a 1 in 38" rate.
My opinion is the .44 should be 1 in 16" to expand boolit weights. As a revolver barrel gets shorter, the twist should get faster.
1 in 20" should be just right in a 44 rifle. Just find the velocity and spin each boolit needs.
We are still pulling hair with a 1 in 38" 444. Even it can't reach spin.