Re: Math of Sighting in
[Re: GREENCOUNTYPETE]
#6993840
09/18/20 05:19 PM
09/18/20 05:19 PM
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Joined: Sep 2013
Posts: 19,997 Green County Wisconsin
GREENCOUNTYPETE
OP
trapper
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OP
trapper
Joined: Sep 2013
Posts: 19,997
Green County Wisconsin
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the center should be the center at 3 or 9
however I do typically sight in at the highest because I can see the small square better and see my own bullet hols most of the time.
shooting with a very steady rest high power is good cause you can see
but if it is not very steady you can see all your movement and people tend to over correct for it and can be better off reducing the magnification till the image stabilizes some.
hunting I always leave it on the lowest , it is faster and typically hunting shots are not that far away when they are far away you have time to turn the dial.
America only has one issue, we have a Responsibility crisis and everything else stems from it.
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Re: Math of Sighting in
[Re: GREENCOUNTYPETE]
#6993868
09/18/20 06:29 PM
09/18/20 06:29 PM
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Joined: May 2010
Posts: 10,802 MN
Steven 49er
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trapper
Joined: May 2010
Posts: 10,802
MN
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Pete, you are going to confuse me, I've switched over to Mil lol then either you are ahead of the curve or completely lost. but for rough calculation there are 0.3 mill to a MOA so if you need to move 3 moa you need to move 0.9 milrad most milrad optics are 0.1 milrad to the click or the graduation is in 1/10s of a mil Nah, not lost. When I decided to start thinking about the possibility of some longer range shooting and was looking at FFP scopes I decided to switch to the dark side, aka the metric system. I was and still am a sight it in at a hundred yards and work it out to 200 and never gave thought to MOA or mils. One of these days I'll start working on long range shooting. Adam, SFP scopes should be shot at the highest setting if one is trying to shoot longer ranges. If one uses a SFP scope at lower settings and has to adjust for distance the math changes.
"Gold is money, everything else is just credit" JP Morgan
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Re: Math of Sighting in
[Re: GREENCOUNTYPETE]
#6994073
09/18/20 10:23 PM
09/18/20 10:23 PM
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Joined: Oct 2015
Posts: 3,108 Wyoming
cmcf
trapper
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trapper
Joined: Oct 2015
Posts: 3,108
Wyoming
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Three shot sight in for bolt action rifles that are sub MOA. With a properly mounted scope. Clamp the rifle in a padded vice pointing at a wall about thirty feet away. Place a spot on the wall about where the muzzle is pointing. Then remove the bolt if you haven’t already. Look through the bore of the barrel and adjust the base of the vise and tilt of the rifle until you can see the spot centered in the bore, then look through the scope. If the vertical crosshair is on the spot and the horizontal is about 1” above the spot you are ready to shoot! If not then adjust the elevation and windage. Just like adjusting a front sight if the vertical is to the left of the spot turn the windage adjustment to the left. Same for the horizontal if it’s to high turn the adjustment up. Don’t sound right but that’s the way it is. If you think about it it makes sense. If you have done it correctly the spot will be centered in the bore, like a peep sight and the cross hairs will be like described above. Now you are ready to shoot. Off sanbags with the target at twenty five yards aim at a spot you want to shoot. Fire ONE shot. If you have done the things above correctly the bullet hole will be within a couple inches of your point of aim usually less than that . With the rifle clamped in a cleaning cradle, you all have one of those things don’t you, move the cradle and rifle until the crosshairs are on the original point of aim. Then WITHOUT MOVING THE RIFLE adjust windage and elevation until the crosshairs are on the bullet hole. Just like above, up is up down is down left is left right is right. Now move the target out to 100 yards. Again fire one shot you will be very close to the point of aim. Make your fine tuning adjustment this time adjust in the direction you want the point of impact to move, tap lightly on the scope to settle the adjustments. And fire your third shot for verification and save the rest of your ammo for some field position practice. I have done this with my rifles and customers rifles many many times it flat out works.
“The world is governed by very different personages from what is imagined” B. Disraeli
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Re: Math of Sighting in
[Re: wildflights]
#6994158
09/18/20 11:52 PM
09/18/20 11:52 PM
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Joined: Jan 2020
Posts: 5,251 Aliceville, Kansas 44
Yukon John
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trapper
Joined: Jan 2020
Posts: 5,251
Aliceville, Kansas 44
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I'd like to know what a good rule of thumb is...like an inch high at 100 yds? I know there are many different scenarios, just looking for a good go to. A fair rule of thumb- Dead on at 17 yards is close to sighted in for Maximum Point Blank Range for standard deer rifles. If it's one of flatter shooters, that may stretch out to 22 yards. This is ignoring things like the nuances of different velocities, ballistic coefficients and line of sight above the bore. It is a general rule of thumb and is one that I've used for Thirty-some years. Thank you, this is what I am looking for. I'm not a benchrest shooter, I just want a starting point, and something to "shoot" for so I can adjust my optics when I am hunting, thanks again!
Act like a blank, get treated like a blank. Insert your own blank!
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Re: Math of Sighting in
[Re: GREENCOUNTYPETE]
#6994454
09/19/20 09:52 AM
09/19/20 09:52 AM
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Joined: Sep 2013
Posts: 19,997 Green County Wisconsin
GREENCOUNTYPETE
OP
trapper
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OP
trapper
Joined: Sep 2013
Posts: 19,997
Green County Wisconsin
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Yukon John
I have been giving the general purpose sight in distance for most all hunting more though.
50 yards would be the most forgiving for sight height universal sight in distance figuring most game is taken between 10 and 100 yards
a 308win with irons at 1 inch high or a scope at 2 inch above bore axis you are between zero and an inch high on the target at 100 yards
with 223 form an AR you would be around 1 1/2 inches high at 100 yards (AR rifles typically have high sights 2.5 to 2.75 inches above bore axis)
a shotgun with rifled slugs , probably 3 inches low at 100 but it is really the outside of where rifled slugs are actuate enough to take the shot and good for its usable range
22lr would work
pistol cal carbines would still be effectively sighted in
If I had to pick one distance to set the most guns to a very usable zero for general hunting 50 yards would be it.
as for specialty tools for working on guns or sighting them in a screw driver set with bits so that you fit every screw you turn and can turn them with out marring the screws would be first followed by a inch pounds torque wrench.
Last edited by GREENCOUNTYPETE; 09/19/20 09:54 AM.
America only has one issue, we have a Responsibility crisis and everything else stems from it.
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