This will take quite a bit of time, so bear with me...
1st of all, the targets used in the anglosaxon world (more or less standard for LR work) have a 5-ring as max score, with an x-ring inside that, which is called V-bull.
When you shoot and are scored, the number of V-bull is noted, so a 60.03 would be a score of 60 (out of a possible max. of 75), with 3 V-bulls.  In LR shooting, MLAIC rules are not used, so it is not the best 10 out of 13, or whatever.  
For LR work, you shoot 15 shots for score, each shot having a potential max. score of 5 ( so the max. score is 75).  
BUT you also have  - as a rule - 5 ranging shots, to get on target and 5 sighters to get good sight settings for the range and conditions.  The 1st shot hitting the target will be your 1st sighter.
You can usually convert your sighters to scoring shots in the reverse firing order, i.e. you can convert the last shot, or the last 2, 3,... - or all 5.  However, you won't be allowed to convert the 1st 3, and not the last 2 (reverse firing order, remember?)
And as to spotting your shots, actually nobody is able to see them with their spotting scopes - but there's markers in the butts which will both indicate score and fall of shot on the target.  Sometimes these are 'dedicated' markers, sometimes it is just other shooters that aren't shooting in the current detail, so your turn will be next...
 

Belgmart can you take a look at this link and tell me if it�s anyone the target used long range you mean ( five rings , v-bull , etc ) ??
 
http://images.google.es/imgres?imgurl=http://www.pistoleer.com/targets/pics/MR.g if&imgrefurl=http://www.pistoleer.com/targets/highpower/&h=250&w=248&sz=16&hl=es&start=18&tbnid=dgGHnsGIyi35OM:&tbnh=111&tbnw=110&prev=/images%3Fq%3DNRA%2BRifle%2BTargets%2B%26svnum%3D10%26hl%3Des%26rls%3DGFRC,GFRC:2007-08,GFRC:es
 

Okay Gents is it 5 ranging shots �and 5 sighter or unlimited ranging and 5 sighters?
 

FWIW,  I only have experience with the HBSA and The WLRHSA matches, so those are all the reference points I have...  Suffice to say, getting on target at 1,000 isn't as easy as it seems at 1st glance!  LR shooting is at the same time a very satisfying but also sometimes an extremely frustrating sport - like getting off the target during your string, and trying to get back on...

600?  Now, that's midrange!  And where in/near Madrid might that be?  In Januari, would be rather cold, no?

Unless you have the modern luxury of electronic target scoring you will most likely require a butt marker to pull target frames up and down, mark shot placement and signal score. Shot placement is simple indicated by placing a 'pin' through the shot hole - the pin itself holding a piece of flourescent orange card which the shooter can see with the aid of a spotting telescope. See the MLAIC rules refered to above for signals etc used.
 
Some competitions shooters share duties with marking while in others paid markers are employed. It really depends on your renage facilities.
 
David

Yes, you need a marker for each shot so that the shooter can see the plot fall. It is also usual to have 2 or 3 shooters share one target, so one will fire while the others are loading. After the shot is fired, the next shooter will take his turn. So you could have say 5 targets, but 15 shooters in the same detail. For this reason each shot is scored and recorded.
 
I realise all this sounds somewhat complicated if you don't have experience of it, but things do (generally) run smoothly!
 
David