Thinking of obtaining a barrel for my 44 1/2 in 22 LR. for competition. 
I have a few questions;
Do you shoot factory fixed ammo?
What ranges are shot?
What positions are used? (ie. bench, offhand, etc.)
What sights are called for? (scopes, tang sights etc.)
What else am I ignorant of?   

Frank gave a good run down, only thing I can add is gallery indoors at 50'.  Gallery is a good place to work on offhand wintertime, No conditons to deal with and the rifles are good enough to shoot a perfect score. Off shots are the shooter not the gun.

Most gallery is AS=any sight and IS=iron sight then agg of both you can enter one or the other but match final standing is usualy aggrate


Boats

BPCR .22 Silhouette;
BPCR legal guns/classifications, classes for iron sight and scope (must be BPCR legal-not larger than 3/4" tube). 40 and 60 shot matches, targets- chickens 50 meters off-hand, pigs 100 meters prone or sitting, turkeys 150 meters prone or sitting, rams 200 meters prone or sitting. The targets are scaled down to give essentially the same sight picture as 200,300,385, and 500 meter BPCR targets.
This game is basically a shrunk-down version of BP Silhouette, legal guns will have exposed hammers, no palm rests, hooked butt plates, slings, tuners, etc. Also, no tight shooting coats.
All the fun and anguish of BP Silhouette, but no casting or loading.

One problem I've run into. 
I shoot ISs on my .22 for OH matches.  Even though the match will be advertised "any sight" the proper targets for ISs are seldom available. I've learned to take my own targets to a match. Most Schuetenmeisters are not friendly to the idea of providing the proper targets when one oddball shows up.  One such match is the ISSA NW Regional coming up in Spokane.  The large IS targets for 100 yards have never been available. I'll scrounge some up and take them along.

                 Joe.

Not all the ASSRA targets are double sided Boats. 

Seems theres always a couple matches I go to that dont have the double sided ones.  For .22 IS OH, the large black bulls are the very best.  At 100 yards I can almost always see the bullet holes with my spotting scope.

              Joe. 

Minor correction.  ranges will vary, some ASSRA matches are hed at ranges with 100 yrd limits.  Others shoot at 200 yrds.

At the Etna Green range where I shoot, during our 3 annual regular matches, we shoot the 22s at 200 yards on a single entry 10 shot benchrest target. We also shoot a 100 shot "mini-hudson" an offhand match on an approprately scaled down target.  In addition we shoot 2 50 yard matches--both re entry, one is ten shots on a much reduced 2-bull target for score and another, the Stich match which is two shot on each of 5 small bulls for single shot closest to center.

In addition we have two  22 rimfire only matches, our first match in the Spring and out last match of the Fall.  At these we shoot a full panoply of ASSRA matches, offhand and bench, score and group, irons and any sight. except we do not do the 50 yard matches, needing all our portable backers for the 100 yard shooters.

While some of the shooters use the VERY high priced imported match ammunition, it may or may not be reflected in their scores.
  Winning scores are a combination of high quality equipment, (and a well fitted match grade barrel and chamber on a well tuned CPA would certainly meet rifle standard), the most accurate ammunition you can find for that specific rifle,  high quality optics or sights and good solid reliable bench equipment---for both bench rest shooting and also for ammo testing and sight regulation, spotting scope (22s make little bitty holes at 100 and 200 yards), wind flags and other down range gear may help too.   

However hardware is only part of the requirements.  Having or learning the shooting skills, learning to "read" the wind and environmental conditions---when to pull the trigger and when to wait.  Having patience.  The finest most precision rifle and optics and the nose-bleed high-dollar imported match ammo is wasted if the shooter does not have the skills to employ it properly.

Wayne,,,,,,,,,, you could sell Aguilla ammunition to Lones Wigger. 

              Joe. 

If you are going to obtain a barrel for your 44 1/2 in 22LR, Get a RKS (Ron Smith) gain twist and never look back. You can do no better.