Thanks for the reply. But isn’t really answering the question put forth.

I just picked up a beautiful #2 rolling block. Stamped.22 on the barrel. It takes .22 short and .22 long. 
I wanted to use it matches with targets at different distances up to 200 meters. I thought I would rechamber it to 22 LR but in reading about . 22 short and long I found, among others, CCI 27 gr 1105 fps short. That’s right up there with 22 LR. So, any thoughts? And then there is 22 long?

I disagree with the comments about .22 Shorts.  A dozen years ago, I had use of a Steven-Pope with a 44 1/2 action and a gain-twist choke bored barrel.  I used my 12 X Unertl scope. I tried every type of Short that I could find, including several types of Shorts made for the Olympic rapid-fire competition.  

I would agree with your findings.  I have a couple of Maynards in 22 short and they perform very well at 100M.
Lots of evidence at my range that 22LR will not perfrom in rifles chambered for short or long.

I tried to find Peters Thunderbolts or Remington Rockets, but they are long gone.  I tried some old Winchester plated hollow points, but they were too old.  I bought a carton of Monarks, probably the least accurate Shorts I ever found.  I tried some Fiocchi stuff with copper cases.  Some of them detonated, vaporizing the rear of the case but leaving the bullet and the front half of the  case in the chamber.  Leave that stuff alone.  I bought some Polish Army Shorts from Midway.  Those were as good as the CCI Target Shorts, but they were a one-time thing.

CCI Target Shorts, 29 grain bullet, advertised MV about 880 fps, were the most accurate of all the stuff I tried.  Over time, I bought 3 cases of them.  Accuracy varied by lot, but they were about 92 % to 95 % as accurate as the old Peters Semi-Smokeless loads.

After the Stevens-Pope went home, I was loaned a Winchester 52B with a Pope barrel.  I put the Unertl on it.  The CCI Target Shorts were the most accurate in this rifle also.

I shot both of those rifles off the bench at 100 yards & at 200 yards.  Using the ASSRA 100 yard target, both rifles would keep almost all the shots inside the 22 ring, all in the red, with most of them inside the 23 ring.  At 200 yards, even with weighed ammunition, 20-shot groups gave a pattern 6" wide and some 21" long.

I have 3 Winder Muskets, one of the last bunch made, about 1920.  Another is an ordinary 3rd Model from Dec. 1917.  The last is another 3rd Model but it has a 2nd Model barrel that I got from Steve Garbe. I put scope blocks on that.   All those have 20" twist rifling and Long chambers.  They do much better with CCI 27 grain plated hollow points.

Back 12 years ago, I entered 2 of our club's Sunday AM 30-shot Schuetzen Matches.  Both times, I had 27 holes in the paper and did not finish last.