Dear AK49, Good to see that you discovered your LED. Try target shooting close at 10m to get more accurate results with a .177. In case you are using .22 it would work relatively. Plus at 25m remember your target is further still. So it would be problematic for your gun to be zeroed more accurately. Let me explain - at 25 m (vis-a-vis 10m or 33 ft) gravity has already exerted its pull and hence the pellet is in trajectory over 2.5 times the distance it was meant to hit and is going to 'dip' somewhat. Plus .22 pellet is gonna be heavier. So for the same (or similar) power bank your accuracy is bound to be off. But stick with it if you do not have any other option so that you get balance, sight alignment and trigger pull experience firmly fixed. Do *NOT* try to compensate for shorter distance and lower cal. Stay "AS IS". It's like swimming in the sea. Once you switch to the pool it might feel different at first but then you still come back strongly. Ideally, 10m + .177 cal for target shooting. If possible get peep sights installed if you are keen on competing in future as open sight options are getting terribly reduced. Of course, for the joy of air gun target shooting nothing beats the springer with open sights.
Just my 2 cents worth.
BTW, classes at Savarkar Smarak range are expected to start in 2nd or 3rd week of Jan. Will keep you posted. Good Luck.