Try out
Chris
I'm sorry but what you're asking for is unlikely in this country as the market is very small, virtually no one holds stock and if they did they would not let you try them as they would then be second hand or demo's (which don't exist). Even abroad there is little opportunity to try. MEC and Stoppers have ranges but I doubt would let you shoot stock.
Look for a big 10 mt club and hope that members have the guns you are interested in as most will let others try guns, we have two out of the three. Also a quick try will tell you little, it takes time to get the feel of a different gun.
The other option is a big meeting such as the British at Bisley in Feb where you may find people with most things but you would not be able to shoot them. (The ESSU meeting is Sun 5th May at Bisley).
I'm sorry but I think other than that you are out of luck.
Best of Luck
Robin
Walther KK500 Alutec expert special - Barnard .223 "wilde" in a Walther KK500 Alutec stock, mmm...tasty!! - Keppeler 6 mmBR with Walther grip and wood! I may be a Walther-phile?