You can cut down on sight-in time when you use Bushnell's Professional Boresighter Kit.
It aligns the muzzle with your scope's reticle to get you on paper quickly, saving you hassle at the range. Actual firing of the gun is not necessary, so you can even use it indoors.
This comprehensive kit includes a bore sighter and three expandable arbors all neatly packaged in a case for travel and storage.
Arbors cover all calibres from .22cal to .45cal and also includes a fixed .17 calibre arbor.
Available in store