On Sun, 24 Oct 2010 09:05:57 -0700, "Steve B"
wrote:


"Ignoramus22870" wrote


That's an interesting idea, but how accurate are those boresighters?

The main purpose of a boresighter is just to get the gun to shoot on the
paper and save a $20 or so box of shells. When done carefully, they can be
accurate enough, so that when you go to the range, you will save a lot of
shells.

Steve

Right, and .22LR ammo is cheap.

Boresighters that use a chrome-plated stem that fits into the muzzle
can damage the crown and screw up what was an accurate rifle.

It should only take a few rounds to zero a rifle if the scope behaves
ideally. Start at 25 yd (or less) get on the paper with big paper.
The first of those rounds will be a fouling round which doesn't matter
at 25 yd. Zero the scope. Move out to 50, fire 1 round and tweak,
another two rounds if the first round didn't quite feel perfect. Then
move out to 100, fire a 3-round group, zero on the group centroid and
check with another 3 rounds.

Scopes that behave ideally are pricey, north of $500. The difference
in cost is more than the cost of ammo expended to grope with a scope
good enough to hunt, and sniper-class accuracy isn't necessary for
hunting -- except for varmint hunting.