Who owns a Nosler #6 loading manual?

[SuperCub]

A few years ago, I bought a Nosler #6 loading manual. Today I was looking at two 7mm Nosler bullets in the bullet drop tables and something does not seem right.

Bullets in question.

1. NBT 120gr 7mm @ 2800fps 0.417BC
2. NP 160gr 7mm @ 2500 FPS 0.475BC

Both these examples show strange drop numbers when compared at 100yd zero and 200yd zero. There are other strange numbers in the tables as well but am not going to bother with those. You can look and see for yourself.

I did some comparisons with two other online calculators which agreed with each other but are nowhere near what the Nosler data states.

Online calculator results ....

1. 120gr NBT .......... 100yds +1.8", 200yds zero, 300yds -8.1", 400yds -23.5".
2. 160gr NP ............ 100yds +2.5", 200yds zero, 300yds -10.0", 400yds -28.6"

There are other strange drop numbers in there but will concentrate on these for now.

Am I missing something here?

 

[Paul_T]

I have Nosler version 7 but are you taking into account the sight height above bore in your online calc?
Nosler data is using +1.5 inches

 

[SuperCub]

The online calculator does factor in 1.5" above the bore.

What does your manual say for these two bullets at the velocities I get?

 

[9.3mauser]

I have Nosler #5, and their numbers seem optimistic.

With a 200 yd zero, drop at 300 5.4 & 6.7 respectively, drop at 400- 11.8 & 14.3 respectively.

From the look of things I think those numbers need to be shifted over one column to the left.

 

[Paul_T]

The online calculator does factor in 1.5" above the bore.

What does your manual say for these two bullets at the velocities I get?

Number 7 only goes by BC, not bullet weight in the Universal Drop Table

0.417 (2800 muzzle) -3.6, 0.0 (200 yard zero), 5.5, 11.8, 19.0
0.475 (2500 muzzle) -5.2, 0.0 (200 yard zero), 6.7, 14.2, 23.2

edited to add 500yd drop

 

[SuperCub]

Number 7 only goes by BC, not bullet weight in the Universal Drop Table

0.417 (2800 muzzle) -3.6, 0.0 (200 yard zero), 5.5, 11.8
0.475 (2500 muzzle) -5.2, 0.0 (200 yard zero), 6.7, 14.2

I used the BC and velocity in mine as well.

 

[SuperCub]

Here is the #6 data for the 160gr NP at 2500fps .475BC.



Load data for the 120gr NBT at 2800fps .417BC

 

[Paul_T]

Slight difference between Versions 6 & 7 (couple of 1/10th of an inch).

They dropped the tables completely in 8 (at least the electronic version)

 

[jamesharrison]

Data in Nosler #4 matches your lower numbers, as does BEX. I just re-read your post #7. They're the same numbers as shown everywhere else, including your online calculators. That is 120 gr. BT bullet, 2,800 fps MV, 200 yd. zero, 0 = -1.5", 100 = +1.8", 200 = 0, 300 = -8.1", 400 = -23.6" Each column represents a different zero range; you must read the numbers down in your chosen zero column, NOT from left to right! There's nothing wrong with the numbers shown in the book.

 

[SuperCub]

Each column represents a different zero range; you must read the numbers down in your chosen zero column, NOT from left to right! There's nothing wrong with the numbers shown in the book.

LOL ........ Well duh. That's exactly right. Good call.

No wonder the numbers I was getting were wonky.

 

[jamesharrison]

No problem; we all, or at least I do, have a case of Old-Timer's kick in from time to time.

;-)

 

[SuperCub]

No problem; we all, or at least I do, have a case of Old-Timer's kick in from time to time.

;-)

The other two manuals I was looking into read left to right.