Can someone please tell me how high I should be at 100 yards to have a zero of 250 with a 300 WSM, shooting 165 nosler PT at 3100 fps?


thanks

from Nosler Reloading Guide 5th Edition

165 grain Nosler Partition
B.C. = .410
@ a muzzel velocity = 3100fps

gives 200 & 300 yard zeros:

200 yard zero:
+1.4" @ 100 yards
0 @ 200 yards
-6.3" @ 300 yards
-18.5 @ 400 yards
-37.7" @ 500 yards

300 yard zero:
+3.5" @ 100 yards
+4.2" @ 200 yards
0 @ 300 yards
-10.1" @ 400 yards
-27.2" @ 500 yards

I'm guessing +2.5" @ 100 yards should give you about a 250 yard zero for the 165gr NP @ MV of 3100fps

Maxx, try 2.5"... BUT, the only REAL way to know is shoot it at that range.

Brad, are you a 'lefty' too? THose are great words of wisdom

I realize some don't have easy access to a range beyond 100 yds and they should be cut a little slack, but it's amazing to me of those who do how 99% of them never even sight in, much less practice beyond 100 yds.

It's easy. Place target at desired zero range. Shoot. Go home when they look like this:



It's so much more accurate than guessing from a 100 yd group.

Load Data
~~~~~~~~~

Name: .308 Cal, Nosler #16330 Part, 165 grn
Ballistic Coeff: 0.410
Bullet Weight: 165
Velocity: 3100
Target Distance: 250
Scope Height: 1.500
Temperature: 70
Altitude: 500

Ballistic Data
~~~~~~~~~~~~~~~
Range Elevation Velocity Energy
0 yds -1.50 in 3100 fps 3521 fpe
25 yds -0.18 in 3042 fps 3390 fpe
50 yds 0.91 in 2985 fps 3264 fpe
75 yds 1.77 in 2928 fps 3141 fpe
100 yds 2.36 in 2872 fps 3023 fpe
125 yds 2.69 in 2817 fps 2908 fpe
150 yds 2.74 in 2763 fps 2797 fpe
175 yds 2.51 in 2709 fps 2689 fpe
200 yds 1.98 in 2656 fps 2585 fpe
225 yds 1.15 in 2604 fps 2484 fpe
250 yds 0.00 in 2552 fps 2386 fpe
275 yds -1.46 in 2501 fps 2291 fpe
300 yds -3.29 in 2450 fps 2199 fpe
325 yds -5.46 in 2400 fps 2110 fpe
350 yds -8.03 in 2351 fps 2024 fpe
375 yds -11.00 in 2302 fps 1941 fpe
400 yds -14.40 in 2254 fps 1860 fpe
425 yds -18.23 in 2206 fps 1782 fpe

quote:

Originally posted by CanadianLefty:
Brad, are you a 'lefty' too?

Me older bro is a southpaw... I musta got some of his defective genetic's...

quote:

Originally posted by Maxx:
Can someone please tell me how high I should be at 100 yards to have a zero of 250 with a 300 WSM, shooting 165 nosler PT at 3100 fps?


thanks

Maxx, I have the Federal ballistics program and the cartridge you describe would be 2.3" high at 100 yards with a 250 yard zero.