Sighting in a .270 win

[Mulie_Hunter]

Here's the Question I want to have My .270 win dead on @200 yards but I don't want to blow 3 boxes of shells doing it. So if I sight it in @ 50 or 25 yards will it be flat all the way to 200? I'm using winchester super X 130gr power points. Anything will help.
Thanks Mark

[todbartell]

try shooting at 200 yards http://www.ls2.com/forums/images/smilies/huh.gif

or get it printing 1.5-2" high at 100 yards...

if you don't want to waste ammo at long range, like "200 yards" because you fear missing and wasting ammo, well you will not hit a deer under field conditions anyways, at least not in the vitals...

[416]

The following is from the barnes bible....130 gr. bullet flying at 3000 ft/sec and zeroed at 200 yrds will be 1.5 inches high at 100 yrds. and just over 6 inches low at 300. Like Todd suggested, 1.5 inches high at 100 gives you a dead on hold out to 300 yards. Winchesters offering will be a bit different, but for hunting accuracy, it will definitely be in the right ball park.

[Mulie_Hunter]

Thanks for the info guys!

Mark

[willyqbc]

I don't shoot the 130's, but Fed premium 150 grn noslers in my gun at 2 1/2" high at 100 puts me dead on about 225yds. Pretty much point and shoot center mass on moose out to 300, mid to upper 1/3 on deer at 300.

Chris

[barehunter]

I have my .270 sighted at 2 inches high at 100 yds and its dead on at 200 yds . this rule sems to work for almost all of my bullet weights and loads. give it a try .

[magnum]

Muli Hunter,

Ran the load through Point Blank and it gave the following results.

Name: .277 Cal, Hornady SST, 130 grn
Ballistic Coeff: 0.460
Bullet Weight: 130
Velocity: 3100
Target Distance: 200
Scope Height: 1.500
Temperature: 70
Altitude: 500
Ballistic Data
~~~~~~~~~~~~~~~
Range Elevation Velocity Energy ETA Drop Max Y 10mph Wind Deflect
0 yds -1.50 in 3100 fps 2774 fpe 0.000 sec 0.00 in -1.50 in 0.00 in
25 yds -0.44 in 3048 fps 2682 fpe 0.024 sec 0.11 in -0.57 in 0.03 in
50 yds 0.40 in 2997 fps 2593 fpe 0.049 sec 0.46 in -0.48 in 0.15 in
75 yds 0.99 in 2947 fps 2506 fpe 0.074 sec 1.05 in -0.33 in 0.29 in
100 yds 1.33 in 2897 fps 2422 fpe 0.100 sec 1.88 in -0.12 in 0.54 in
125 yds 1.42 in 2847 fps 2340 fpe 0.126 sec 2.98 in 0.17 in 0.88 in
150 yds 1.23 in 2798 fps 2260 fpe 0.153 sec 4.34 in 0.53 in 1.31 in
175 yds 0.76 in 2750 fps 2183 fpe 0.180 sec 5.99 in 0.97 in 1.82 in
200 yds -0.00 in 2702 fps 2108 fpe 0.207 sec 7.93 in 1.49 in 2.42 in
225 yds -1.06 in 2655 fps 2035 fpe 0.235 sec 10.16 in 2.09 in 3.11 in
250 yds -2.42 in 2609 fps 1964 fpe 0.264 sec 12.70 in 2.78 in 3.87 in
275 yds -4.09 in 2562 fps 1895 fpe 0.293 sec 15.55 in 3.57 in 4.71 in
300 yds -6.07 in 2516 fps 1828 fpe 0.322 sec 18.72 in 4.45 in 5.62 in
325 yds -8.43 in 2471 fps 1763 fpe 0.352 sec 22.25 in 5.43 in 6.66 in
350 yds -11.10 in 2426 fps 1699 fpe 0.383 sec 26.10 in 6.52 in 7.75 in
375 yds -14.15 in 2382 fps 1637 fpe 0.414 sec 30.33 in 7.72 in 8.96 in
400 yds -17.61 in 2338 fps 1578 fpe 0.446 sec 34.97 in 9.05 in 10.31 in
425 yds -21.48 in 2294 fps 1519 fpe 0.478 sec 40.02 in 10.51 in 11.77 in
450 yds -25.77 in 2251 fps 1463 fpe 0.511 sec 45.49 in 12.11 in 13.35 in
475 yds -30.49 in 2209 fps 1408 fpe 0.545 sec 51.39 in 13.84 in 15.04 in
500 yds -35.66 in 2167 fps 1355 fpe 0.580 sec 57.74 in 15.72 in 16.84 in
525 yds -41.28 in 2125 fps 1304 fpe 0.615 sec 64.53 in 17.76 in 18.74 in
550 yds -47.36 in 2084 fps 1253 fpe 0.650 sec 71.79 in 19.94 in 20.75 in
575 yds -53.90 in 2043 fps 1205 fpe 0.686 sec 79.51 in 22.29 in 22.86 in
600 yds -60.92 in 2003 fps 1158 fpe 0.723 sec 87.71 in 24.81 in 25.06 in
625 yds -68.57 in 1963 fps 1112 fpe 0.761 sec 96.54 in 27.54 in 27.47 in
650 yds -76.62 in 1923 fps 1067 fpe 0.799 sec 105.77 in 30.42 in 29.90 in
675 yds -85.35 in 1884 fps 1024 fpe 0.838 sec 115.68 in 33.54 in 32.53 in
700 yds -94.78 in 1846 fps 983 fpe 0.878 sec 126.28 in 36.89 in 35.36 in
725 yds -104.91 in 1808 fps 944 fpe 0.920 sec 137.60 in 40.50 in 38.37 in
750 yds -115.76 in 1771 fps 905 fpe 0.962 sec 149.63 in 44.37 in 41.55 in
775 yds -127.35 in 1735 fps 869 fpe 1.005 sec 162.39 in 48.50 in 44.90 in
800 yds -139.67 in 1699 fps 833 fpe 1.049 sec 175.89 in 52.90 in 48.40 in

So my advice is to shoot your rifle at 100 yards to ensure your load is a good one (good 3 shot group) and sight it 1.33" high then try a couple of shots at 200 yards.

Cheers,
Magnum

[swamper]

Hey Mark. Use the ballistic program I told you about. I you sight it in at around 25 yards, you should be right there at 200. Jack O'Connor was a diehard .270 fan and he always used to say that 25 yards was a good place to start.

[leftcoast]

Yup I am with Swamper. Get it sighted in at 25 and then do your 100 yard practising.


=keith=

[boxhitch]

Mulie asks " So if I sight it in @ 50 or 25 yards will it be flat all the way to 200? I'm using winchester super X 130gr power points. Anything will help."

The basic answer is "no". No rifle has a flat trajectory.
I think even O'connor would say to start by getting it on paper at 25/50 yds., then move the target out farther, say 100 yds. Elevation should be your only adjustment, although the further you go, the horizontal error will show up larger also.Sight and practice for the distance you expect to shoot. If you want to be able to shoot at 200 yds., you had better 'waste' some bullets and practice at that range. All in the name of fun !!

[Foxer]

Here's a trick a good friend taught me to save you some ammo.

If you're on paper, do this at 100 yards. If you're not sure you're on paper, start at maybe 25.

Shoot one round, putting the crosshairs on the target. Now here's where it gets tricky - you must have a friend handy.

Re sight on the cross hairs, and have your friend turn the nobs with the screwdriver until the crosshairs move to the bullet hole! You must hold the gun VERY STEADY for this to work - use sandbags. However, the gun will now be zero'd. Remeber to tap the scope every few clicks as it's moved, to make sure the crosshairs move appropriately. Adjust the appropriate number of clicks to give you the hight you want.

Now fire again. I bet you find you're almost zeroed. A three round group will tell you what you need to do to make the final adjustments.