Sighting in .303 British

stevewparadise

stevewparadise

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I will be sighting in my .303 British this weekend. I did some research on youtube about sighting in a rifle with two shots. Its a pretty interesting video.

Anyhow, if I am firing from 25 yards where should my bullet hit to be sighted in for 200 yards?? Im not using iron sights. I am using a scope

ANy info would be great
 
there's a chart called " first crosses line of sight at" on line , but it also depends on the AMMO you're using- i'm talking bullet weight and velocity, orwhatever the BALLISTIC CO-EFFICENT is- you just can't pick out a number arbuitrarilly and expect it to work
 
Check it at 100 yards anyways.The close range zero isn't all it's cracked up to be....off of a solid bench not the truck hood/box or trampoline
 
I would sight your rifle in for 100 yards, and then try the 200 yard range at about 3-5 inches higher. if you got an iphone or ipod download an app called isnipe.

It is a ballistic calculator and is very easy to use, and will give you an idea of where you want to sight it in and what drop you are looking at. Its fun to enter different info on different calibers and see how they perform. It will give good enough info for most of us.

If I had my ipad I here I would tell ya.
 
Don't go to youtube to find out how to sight in your 303 British.
Don't bother trying to find some version of a ballistic calulator.
Disregard much of the information you get here on CGN about ballistic charts and calculators.

Just do as hunters have been doing for a hundred years, sight your rifle so it hits 2 to 3 inches high at 100 yards.
To save ammunition, check the sights first at 25 yards. With your scope sighted 303, you will find that sighted dead on at 25 yards will be very close to what you want, a bit high at 100 yards.
First, get it hitting dead on at 25, then check it at 100.
 
H4831 is bang on --- pun intended ---- shoot at 25 yards or even closer the first shot. get it on paper so you know if there are any drastic changes that need to be made.

You may have an out of line set of screw holes, the scope may be pooched, you may be adjusted way to one side.... even with bore sighting or a tool - I have been soo frustrated that I have shot at 10 yards just to see if anything is coming out of the bbl!

Then back up - 50 yds, 100 , 200 etc if you need to...
 
H4831 said:
Don't go to youtube to find out how to sight in your 303 British.
Don't bother trying to find some version of a ballistic calulator.
Disregard much of the information you get here on CGN about ballistic charts and calculators.

Just do as hunters have been doing for a hundred years, sight your rifle so it hits 2 to 3 inches high at 100 yards.
To save ammunition, check the sights first at 25 yards. With your scope sighted 303, you will find that sighted dead on at 25 yards will be very close to what you want, a bit high at 100 yards.
First, get it hitting dead on at 25, then check it at 100.
Click to expand...

Actually,do not post any ,how to,or any questions,for that matter .Just pm the expert.
 
For what it's worth, if I zero my scoped No.4 at 100 yards, I'm about 6" low at 200. So, as mentioned above, a little high at 100 yards will have you hit the vital area (pie plate size) at any distance up to 200 yards.
 
As everyone said, go dead on at 25. You'll be in the ballpark at 200 and can do a better sight-in at 100 or 200 yards.
I'll give you the benefit of the doubt and assume that you intended all along to check the POI at longer range. Your post doesn't say that, though.
 
The only real way to know for sure where it will impact at 200 yards is to try it. And shoot a group to see how consistent it is at that distance. I do agree though, to first sight it in for 2-3" high at 100 to get you close.
 
H4831 said:
Don't go to youtube to find out how to sight in your 303 British.
Don't bother trying to find some version of a ballistic calulator.
Disregard much of the information you get here on CGN about ballistic charts and calculators.

Just do as hunters have been doing for a hundred years, sight your rifle so it hits 2 to 3 inches high at 100 yards.
To save ammunition, check the sights first at 25 yards. With your scope sighted 303, you will find that sighted dead on at 25 yards will be very close to what you want, a bit high at 100 yards.
First, get it hitting dead on at 25, then check it at 100.
Click to expand...

I'll agree with this. You are better off making sure your good scope is well mounted and you can get a good zero at 25yds, then confirm 3" high approx at 100yds.
Take your time at squeezing at all distances to avoid frustration and ammo waste.The problem with the 25yd zero and leave it, especially on a .303 that someone has drilled and tapped is line of sight not parrallel to line of bore. You may be dead on at 25, but your round may cross line of sight there on its way left or right, and you may be off as much as 12" windage at 100yds! This is where adjustable windage built into the scope base is nice.
Like H4831 said get it 3" approx high at 100yds and enjoy. Any line of sight line of bore out to where you'll probaly shoot a .303 will still put you on target. The 25yd sightin and confirmation at 100yds will show up this unparralel arrangement.
 
When sighting in, it takes more than 2 rounds no matter how you do it. The only way to know how your rifle will shoot with that particular ammo is to shoot a few groups and see. At both 100 and 200 yards. Yes, ammo is expensive. But a box is only ~$25 and you should shoot at least that many out of a new rifle to be sure of hitting what you are aiming at. Both you and your game deserve that much effort and investment.


Mark
 
H4831 said:
Don't go to youtube to find out how to sight in your 303 British.
Don't bother trying to find some version of a ballistic calulator.
Disregard much of the information you get here on CGN about ballistic charts and calculators.

Just do as hunters have been doing for a hundred years, sight your rifle so it hits 2 to 3 inches high at 100 yards.
To save ammunition, check the sights first at 25 yards. With your scope sighted 303, you will find that sighted dead on at 25 yards will be very close to what you want, a bit high at 100 yards.
First, get it hitting dead on at 25, then check it at 100.
Click to expand...

He s right, you dont need a ballistics calculator to figure this out, but it is a fun way to see how how you need to shoot with different rifles at different distances. If you dont care or arent interested on how different calibers perform, then disregard my earlier post.
 
gtrussell said:
Actually,do not post any ,how to,or any questions,for that matter .Just pm the expert.
Click to expand...

Whats wrong with his advice?
Did he hurt your feelings some with sage advice?
Sheesh , an app for a 303 British, what next an app on what ammo to buywhere to buy it and how to install it in the gun??
TMI (iphone applettes) for a new shooter who was asking for some advice on how to sight in his gun.
Tight groups,
Rob
 
I have been sighting in rifles with the advice that H4831 has offered up for years.
Simple and easy.
Bullseye at twenty five and move on out to 100.
Couple three inches high at 100 and if your range allows, do the two hundred.
Then you know for sure what your rifle and ammo is doing.
Reading script I think is a guide line to set you off in the right direction.
You want good advice, listen to what the experienced have to offer.
Well, most of the experienced......
As I have mentioned with humor in the past,
some are born with a small arse hole. :D
 
H4831 said:
Just do as hunters have been doing for a hundred years, sight your rifle so it hits 2 to 3 inches high at 100 yards.
To save ammunition, check the sights first at 25 yards. With your scope sighted 303, you will find that sighted dead on at 25 yards will be very close to what you want, a bit high at 100 yards.
First, get it hitting dead on at 25, then check it at 100.
Click to expand...

x2. Bring sand bags if you have them. A large piece of paper (I use old geological maps and other drawings) behind your targets is a help in case you're really off. Getting close at 25 yards first then going to 100 reduces the rounds required. Finish off by going to 200 yards.
 
I jus' git the feller at the powd'r n' ball ster to bore skope 'er in fer 300 yerds. Thay is ala'ys bang on!
All kidding aside just do what H4831 said. It works and is simple.
 
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