I dont know anything about paper patches do you wrap a paper and lube around a conical of 100 or more grains as the 32-20 pistol bullet for example . Also I dont think you can get a 250 grain bullet that small diameter can youYou ain't using a patch with that twist unless it's paper. Something around 250 or heavier grease groove bullet is what you're looking for
How do them groupI shoot a 210gr bullet out of a .32 with a 1 in 14 twist. With a 1 in 10" you're going to have to go beyond black powder speeds . I use a 170gr in 1 in 18 twist.
A long bullet will work in such a slow twist, but you need to add a lot of powder.I haven't tried it so I don't know but I suspect you might have trouble getting the bullet started into the bore straight. That's why the old timers used a false muzzle. I wonder if a coned muzzle would work for shooting bullets? It would be an interesting thing to try. My .45 is coned but the twist is 66" so a long bullet wouldn't work.
I did that, no charge is accurate with patched balls.Try a lower charge (12-15 grains) when shooting roundball.
Your targets will show if the bullet is loaded perpendicular with the axis of the bore. In accurate target rifles such things make a big difference.I did that, no charge is accurate with patched balls.
No false muzzle is needed. The long cast bullets are sized in a sizer made of the same parent barrel. They load with thumb pressure and no wiggle. They are a perfect match to the barrel.
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