doublegunshop.com - home Forums General Discussion DIY Gunsmithing @ doublegunshop.com Scope Dope

Thanks keith, yes I’ve tried different tricks, I’ve even had some luck with running a couple of clicks past, then coming back, but Ive heard it so many times that, such and such a rifle is a bear to sight in, but once it is, it’s a tack driver.

Yah, if the ammo’s pricey, I like to fiddle for a few minutes, looking through the bore and adjusting the glass, then commit to the first shot. I don’t steady the rifle much, just move the cross hairs till they look centered and a bit high at fifty. I don’t like shooting at my point of aim.

If I don’t need to, I also prefer not to turn and old scope to its stop. Even with a light touch, I’ve had a couple somehow get off track, and be far from worth thinking about having them fixed, so they just sit with the rifle, broken. Anyway, minute of deer vs 220 swift, I think in the end it’s probably better to shoot the swift for group, and stretch it out a bit.

I read today that there are bullets available now that will let the ol' Swift be loaded effectively to 4500 fps. That's smokin', and puts it in rare air, as far as centerfire varmint calibers go. Of course, the depleted uranium rounds that are used out of the M1 Abrams smoothbore gun leave at somewhere between 5700 and 6300 fps, according to who's talking, but that's another class of varmint gun, eh?

Eighty-eight years old and still outrunning the bunch. Pretty cool, IMO.

I read this trick somewhere on how to recenter a reticle.

Go to a bathroom mirror and put the objective bell up flat against the mirror. When you look through the scope you should see 2 reticles, adjust the knobs until both reticles are aligned.

Don't know why but it seems to work fine.

Cantankerous fellow that I am, I may just try that with a living room mirror.

Years ago when I owned a 22-250 and I wanted to zero it in, looking at various books I read that all bullets cross the path of your eye twice. I forget now what the 22-250 was with a55 grain bullet but I believe it was 27 yards and 104 yards.
So as Stan stated if the gun is a bolt action remove the bolt and set a target at 27 yards and with the rifle rested look through the bore to set the rifle to hit the target then look through the scope.
Again if I am not mistaken a chuck at 400 yards aiming at his head the bullet would drop 4" at 3810 fps.

I own 2 Bushnell collimators. One puts the gun close to zero and the other 4" high. They still save a bunch of money on ammo.

That exact distance has to do with the measurement that the exit pupil of the scope is above the centerline of the bore, among other things. I always liked to keep my scopes as low as possible. "See-thru" rings, and other very high rings, exaggerate the numbers and caused me more problems than they were worth. JMO, OMV.