Almost lost my aim after 2 years

	It has been months or years since i last held my rifle... to my disappointment some of the lead bullets are now corroded and worse, I can't hit the target! Well i almost hit the bull's eye (see pic) but my precision has deteriorated. :(
filling air into the gun....
syempre puro porma! hehehehe
The Target. (about 20 metres away)	my back against the target...
Take that! eat hot lead... i mean cold air bullets =)