All of the reasons why modern competitors choose solid-frame revolvers were present on original solid-frame revolvers.
There is nothing on the reproductions that make them more functionally desirable or different than originals. There's nothing about an out-of-the-box $400 Uberti or Pietta 1858 Remington that is going to make it a "match gun". In fact, many serious shooters buy them and then send them off to make them "match guns" through gunsmiths who ream chambers to be bore-aligned with the barrel, rebarrel the guns, add forcing cones and crowns, and tuned triggers.
The main reasons why I think competitors choose the 1858 Remington design (and that is not all that competitors shoot for solid-frame revolvers - the Rogers and Spencer is still also popular despite not having been offered for some years now) are these:
- Ability to easily remove the cylinder for loading off-the-gun.
Most competition shooters in the N-SSA use an external cylinder loading stand. This allows for faster, easier, and generally more consistent loading of the chambers. It also takes the loading stress off of the loading lever of the gun. This is the biggest reason, in my opinion.
- Solid-frame designs are generally more mechanically consistent.
With the Colt, you have to take the gun to pieces. And while yes, if your wedge is just right and your wedge slot in your arbor is aligned with the wedge slot in the frame just right and your arbor isn't too long or too short and if your arbor isn't loose in the frame then yes a Colt can be just as mechanically consistent. But a solid-frame design always is.
- Solid-frame revolvers are less prone to cap jams.
With solid-frame revolvers, the hammer face is narrow and passes through a narrow slot to reach the nipple. This small window acts like a cap rake that helps prevent the cap from following the hammer face and falling down into the crotch of the hammer where it can get flattened and stop the hammer from falling completely on subsequent shots or drop down into the action from above. With Colts, the window for the hammer is the entire width of the hammer and so caps can easily be blown off or stick to the hammer face and be pulled off and so cause the problems above. Some people fill the safety notches on the face of the hammer to try and prevent this pull-off effect, and some people install a tiny "cap rake" pin in the frame that the safety notch falls over but it stops the caps from falling straight backwards. This is unnecessary with solid-frame revolvers.
I'm not sure what you are referring to here. Parker-Hale made pretty faithful copies of the Type IV Enfield series. They made Pattern 1853 muskets, but they also made Pattern 1858, which historically had faster twists. This was not a Parker-Hale thing, this is the way they were made historically. It is a modern lore that during the first NRA matches in England, if you shot a P58 you were automatically given a 10% penalty due to the increased accuracy of them. But I have been recently informed there is actually no evidence of this. (if my memory is serving on this story) The P1853 Enfields had a 1:78 twist historically. I believe the P1858 was 1:48. It also had a 5-groove barrel as opposed to the Pattern 1858 that was 3-groove. The Pattern 1861 was similar to the Pattern 1858.
Generally speaking the evolution went like this:
P1853 3-band musket. 1-78 twist, 3-groove
P1856 2-band musket. 1-78 twist, 3-groove. Found to be inferior in accuracy to P1853.
P1858 (navy) P1860 (army) 2-band musket. 1:48 twist, 5 groove.
P1862 2-band musket. Like P1860, but with Baddley bands and 1200 yard sights.
At some point in all of this progressive-depth rifling was introduced on some or all of them and I'm not sure the details there.
So this was not an original vs. reproduction thing, nor a match vs. non-match thing. Just entirely different rifling mechanisms.