maybe that Daisy single shot target rifle - 449 I think? There is quite a training and competition program all built around this gun. One place to start.
http://www.daisy.com/shopping/customer/product.php?productid=16199&cat=253&page=1Avanti Champion; Model 499 #16199
The Avanti Champion has been dubbed "the most accurate BB gun in the world" time and time again. The beautiful spring air rifle is used by thousands of shooting education programs to teach as well as compete. Emblazoned with the "Official Shooting Education BB Gun by Daisy" medallion in the stained solid wood stock, this single shot, muzzle-loading BB gun looks as great as it performs.
This airgun is for ages 10 and older with adult supervision.
Specifications
Weight: 3.10 lbs
ACTION: Lever cocking, spring air.
SIGHTS: Hooded front with aperture inserts; adjustable rear peep
SAFETY: Manual
MAX. MUZZLE VELOCITY: 240 fps. (73mps)
MUZZLE ENERGY: .70 ft. lb. (.90 J)
OVERALL LENGTH: 36.25 in. (92cm)
CALIBER: .177 (4.5mm) BB
STOCK/FOREARM/GRIP: Monte Carlo, stained hardwood stock; stained hardwood forearm with internal compartments for additional weight for competitive shooting
MAGAZINE: Single-shot muzzle loading; magnetic BB retainer. .177 cal. (4.5 mm) steel shot
BARREL: Smooth bore steel
MAX. SHOOTING DISTANCE: 177 yds. (162m)
Price: $ 85.00