There is alot of really good marksmanship information in the military sniper manuals if you can find them. That info will help you with the mechanics of marksmanship. Benchrest shooters have a great deal to offer with equipment, knowledge and simply knowing how to put the bullet where they want. Many of the tactical/practical shooters are another good source of information. I would warn you away from the tacticool types who want to have all the latest bells and whistles on their rifles rather than relying on practicing basics. They seem to talk alot, but not shoot very well. Sort of like armchair warriors.
As far as equipment, sure there is much better, and much worse than what you are using. I think what you have will work fine if you find a load that it likes and properly mount the scope, and bed the action. The last sniper match I shot at was won by a fellow shooting a stock Remington PSS with a stock Leupold 3-9 scope. All the people with fancy equipment who thought they could sort of "buy" into the winners circle were stunned. It was simply practice and good shooting that won...not an arms race. After a while, if you want, gradually upgrade equipment, but only after you can outshoot your gear. By that, I mean if your rifle is capable of groups better than you can shoot at matches, you don't need a better rifle yet. You need to shoot the one you have better. Nothing wrong with the equipment you have now.
I would check trigger weight, make sure the scope and mounting is tight, bed the action, and start practicing with it. Your gear is fine.
