My method is from the long range muzzleloading as they do at Oak Ridge in the spring and fall. My Badger barrel has a .450 bore with .004" rifling and 1 in 18 twist - like the Shiloh Sharps guys in Big Timber, MT.
I swage a 540 gr smooth-sided bullet. The paper patch is IIRC is .002" thick. With 2 wraps around the bullet, it is just slightly smaller than the bore. I can thumb press the bullet into the bore. The weight of the ramrod will lower the bullet into the bore.
Although it is a loose fit, when fired with say 80-90 grains of ffg bumps up enough to shred the paper as it leaves the muzzle. If a squib load would be used the bullet would not bump up, and the patch would be burned. (I tried that to see.) The load will vary, but many shooters aim for 1250-1350 fps. I would guess that I could duplicate a .45-90 with this barrel and load.
Keep in mind that this is for long range target shooting and not for hunting. Remember that the bullet is a loose fit. The risk of having the bullet slide away from the powder would be a risk. It is a great target load but not for hunting.
Idaho Ron will provide the "paper patched bullet" in hunting situations. I will be interested in how his methods differ from mine. I'm sure a major difference will be the tighter fit to the barrel.
Regards,
Pletch