Sighting in a 243?

[HANS76]

Im going to be sighting in a 243. Does anybody know how high I should site it in at 100yds? Shooting a 80 grain soft pt. Thanks!

[Brad B]

it would all depend on if you plan to shoot out past 100 yards. if not then just zero it to be right on at a 100 yards. now if you plan to shoot out to 200 yards then try sighting 2 or 3 inches high at 100 yards for a starting point then fine tune from there.

[harvey lee]

+1

[HunterLee]

I sight most of my rifle in at 1.5 at 100yds, should be almost dead on at 200.

But you need to shoot at the distances you plan on shooting. You may think you are dead on at 100 and then at 200 you could be couple inchs off left to right. So take a couple shots at the max you will shoot just to make sure its dead on.

[paul pachowicz]

Before you start shooting at 100 I'd recommend starting off at 25 yards to get yourself on paper with less rounds. After you are dead center at 25 then move out to 100 and get your self set with center and how ever high you want to be. Would help alittle if we knew what you are going to be shooting, animal wise. A pretty good gauge though is 3 inches high at 100 and a knowledge of your muzzle velocity. For instance, say your .243 is screaming 3100 FPS at the muzzle you will be pretty close to dead on at 310, 2800 will get ya 280 yards, etc. However, I can't state this strong enough. If you are going to be shooting with any accuracy at all at those longer ranges then you have to actually shoot from those distances. Another rule of thumb is dead on at 25...dead on at 250. Again, these two examples will get you "close".

[DonBo]

As always, good advice Paul. It would help to know what you plan on hunting with that load. Seems to me 80 gr may be a bit smaller than you want to use on any type of big game.

[rumeye]

Shot many Whitetails with the .243 smokes them.Shot placement is the big thing.

[klecker]

Its all I use and I use it well

[PurpleFloyd]

I sight mine in at 1 inch high at 100 but I am shooting 55g bullets.

[Archerysniper]

There is no problem taking a deer sized animal with a .243 or 6mm a good quality bullet and proper shot placement is the key. I have only taken 3 with the 6mm but my dad is around 40 or more and we only have ever lost one and that was that he grazed on a deer drive. I don't know what weight bullets that are offered as factory loads but we shoot 100 grain remington core locks that is also the load I used on my 300# wild boar.

[DitchPickle13]

Yeah, these guys are correct.

To be exact, you need to know the ballistic coefficient and velocity of your round, as well as the height of your crosshairs in relation to the center of your barrel. Unless you're shooting some funky bullet/load combo, you're probably around 3000fps with an 80grn bullet and likely have a BC between .3 and .4 and your sight height is probably around 1.5 inches.

That would put put your bullet .3 inch low @ 25yrds, 1.7 inches high @ 100yrds to achieve a 200yrd zero(-7.7" @ 300, -23.3" @ 400).

BulletFlight is a sweet app' that lets you draw from an extensive projectile database and enter your specific variables. Takes a lot of guess work out!

[paul pachowicz]

Don, I use a 100 grain Sierra boat tail on whitetail, mulies & goats.

[gpalma]

I am a proponent of the "sight in 3" high" methodology for all normal high-intensity deer cartridges when hunting medium game. It is pretty much a no-brainer for shooting out to 300 yards. Hold dead center on the vitals and they will die fast. That said, most hunters should concentrate on getting as close as possible to their game. The farther you shoot, the lower the percentage of a clean harvest.