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Hunting & Ballistics - 50 Yard Sight-In.
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50 Yard Sight-In:
Written by: Kim Lockhart, Copyright.

Rifle Sights And Bullet Trajectory:
1. This first thing to know when sighting in a rifle is that all rifle sighting systems give you a point of aim on any target.
2. The second thing to know when sighting in a rifle is that all rifle sighting systems compensate bullet drop.
3. The third thing to know when sighting in a rifle is that a bullet constantly drops once leaving the rifle barrel, the arc that it drops in is the bullet trajectory.

Rifle Sight-In Procedure:
Step 1: Place your target at exactly 50 yards down-range, be sure that your down-range area is clear and safe to shoot. Wear ear and eye protection while shooting. Always use a target that you can clearly see with your sight system, preferably with 1" graduation grid marks.

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Step 2: Go to your shooting position, load your rifle with one shell at a time as you will need to shoot at least 3 rounds of ammunition for a group to assure everything is accurate and tight on the rifle. Line up your sights correctly and fire one accurate round. Clear your spent rifle cartridge case, wait approximately 1 minute to cool rifle barrel. Repeat this procedure for three rounds of ammo.

Step 3: Make an exact measurement from the center of your group to the center of your target make your windage and elevation adjustment accordingly, if you need to go left or right and you have windage adjustable scope bases, use the windage screws on the base, rule of thumb for windage adjustment, if your bullet impact is to the left side of target center loosen the right rear windage screw on the base and tighten the windage screw on the left rear side of the base.

Step 4: Fire three more rounds to confirm your setting, if all is well and you have centered your group move on to step 5. If you are not satisfied with the accuracy of your ammunition at this point go no further until you have the ammunition you are happy with.

Step 5: You have now established a 50 yard reference zero point, next you have to do bullet trajectory plotting to see if this zero point is what you want for a true rifle zero.

Step 6: Bullet Trajectory Tables For Precise Rifle Sight-In:
 To use the below tables simply select your rifle and cartridge combination of bullet muzzle velocity and your rifles sight height, the table will show you approximate bullet impact and trajectory at various ranges.


50 Yard Rifle Sight-In, Bullet Trajectory Tables:

50 Yard Rifle Sight-In, 1" Sight Height Bullet Trajectory Table:
Bullet
Muzzle
Velocity:
Bullet
Trajectory
50 Yds.
Bullet
Trajectory
100 Yds.
Bullet
Trajectory
150 Yds.
Bullet
Trajectory
200 Yds.
Bullet
Trajectory
250 Yds.
Bullet
Trajectory
300 Yds.
Bullet
Trajectory
350 Yds.
2,500 Fps. Zero - 0.6" - 3.0" - 7.5" - 14.3" - 23.9" - 36.7"
3,000 Fps. Zero - 0.1" - 1.4" - 4.1" - 8.4" - 14.5" - 22.7"
3,500 Fps. Zero + 0.2" - 0.5" - 2.2" - 5.0" - 9.2" - 14.7"
4,000 Fps. Zero + 0.4" + 0.1" - 1.0" - 2.9" - 5.8" - 9.7"
4,500 Fps. Zero + 0.5" + 0.5" - 0.1" - 1.4" - 3.5" - 6.4"


50 Yard Rifle Sight-In, 1-1/2" Sight Height Bullet Trajectory Table:
Bullet
Muzzle
Velocity:
Bullet
Trajectory
50 Yds.
Bullet
Trajectory
100 Yds.
Bullet
Trajectory
150 Yds.
Bullet
Trajectory
200 Yds.
Bullet
Trajectory
250 Yds.
Bullet
Trajectory
300 Yds.
Bullet
Trajectory
350 Yds.
2,500 Fps. Zero - 0.1" - 2.0" - 6.0" - 12.3" - 21.4" - 33.7"
3,000 Fps. Zero + 0.4" - 0.4" - 2.7" - 6.5" - 12.1" - 19.7"
3,500 Fps. Zero + 0.7" + 0.5" - 0.7" - 3.1" - 6.7" - 11.7"
4,000 Fps. Zero + 0.9" + 1.1" + 0.5" - 0.9" - 3.3" - 6.8"
4,500 Fps. Zero + 1.0" + 1.5" + 1.3" + 0.5" - 1.0" - 3.4"


50 Yard Rifle Sight-In, 2" Sight Height Bullet Trajectory Table:
Bullet
Muzzle
Velocity:
Bullet
Trajectory
50 Yds.
Bullet
Trajectory
100 Yds.
Bullet
Trajectory
150 Yds.
Bullet
Trajectory
200 Yds.
Bullet
Trajectory
250 Yds.
Bullet
Trajectory
300 Yds.
Bullet
Trajectory
350 Yds.
2,500 Fps. Zero + 0.4" - 1.0" - 4.5" - 10.3" - 18.9" - 30.7"
3,000 Fps. Zero + 0.9" + 0.6" - 1.2" - 4.5" - 9.6" - 16.8"
3,500 Fps. Zero + 1.2" + 1.5" + 0.8" - 1.1" - 4.2" - 8.8"
4,000 Fps. Zero + 1.4" + 2.1" + 2.0" + 1.1" - 0.8" - 3.8"
4,500 Fps. Zero + 1.5" + 2.5" + 2.8" + 2.5" + 1.5" - 0.4"


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The Hunter's Guide To Ballistics:
Caldwell Stable Table
Caldwell Lead Sled Plus Recoil Reducing Rifle Rest
Caldwell Ultimate Target Stand With Target Backer
Centerfire Rifle Ballistics - Hunting & Ballistics - 50 Yard Sight-In.
Centerfire Rifle Ballistics By Caliber - .17" - .20" - .22" - .24" - .25" - .26" - .27" - .28" - .30" - .31" - .32" - .33" - .35" - .37" - .41" - .43" - .45" - .51".
.17 HM2, .17 HMR, .17 WSM, 5mm Rem. Mag., .22 BB Cap, .22 CB Cap, .22 Short, .22 Long, .22 LR, .22 WRF, .22 WMR.
17 Rem., 204 Ruger, 22 Hornet, 222 Rem., 223 Rem., 22-250 Rem., 220 Swift, 223 WSSM, 243 Win., 6mm Rem., 243 WSSM,
240 Wby. Mag., 250 Sav., 257 Roberts, 25 WSSM, 25-06 Rem., 257 Wby. Mag., 6.5 x 55mm Swedish Mauser, 260 Rem.,
6.5mm Rem. Mag., 264 Win. Mag., 6.8 Rem., 270 Win., 270 WSM, 270 Wby. Mag., 7mm-08 Rem., 280 Rem., 7mm Rem. Mag.,
7mm WSM, 30-30 Win., 308 Win., 30-06 Sprg., 300 Win. Mag., 300 WSM, 300 Wby. Mag., 325 WSM, 338 Win. Mag.,
340 Wby. Mag., 357 Mag., 44 Rem. Mag., 444 Marlin, 45-70 Government.