Nosler Ballistic Tip true BC

[x_wolf]

Hi guys,
I'm desperately searching for true/tested BC of Nosler's 7mm Ballistic Tip 140gr.
Does anybody know something?

Any info will be very appreciated.

Thx.

 

[JEFFPPC]

Hi guys,
I'm desperately searching for true/tested BC of Nosler's 7mm Ballistic Tip 140gr.
Does anybody know something?

Any info will be very appreciated.

Thx.

Shoot your load over a chronograph, zero at 100yds, shoot at 500yds. Put results into a ballistics program and play with the BC until your drop matches. I would think this would give a close true answer, at least for practical purposes.

 

[x_wolf]

Not a problem to do it, but I won't make it until Sunday... And I need the number sooner.

 

[Berger.Fan222]

Hi guys,
I'm desperately searching for true/tested BC of Nosler's 7mm Ballistic Tip 140gr.
Does anybody know something?

Any info will be very appreciated.

Thx.

As far as I know no one other than Nosler has published a BC for that bullet. But most independent sources that measure ballistic tip BCs come in at 5-10% lower than the Nosler BC, which is 0.485 in this case. 0.437 would be a pretty good guesstimate in the absence of additional information.

 

[x_wolf]

Many thanks. Any info helps.

 

[x_wolf]

Range results: Norma factory ammo with Nosler Ballistic Tip 140gr, I've measured two 5-shot groups with my LabRadar. Both have averaged 2740fps out of 25,6" barrel (650mm). Norma states 2820fps on the box. I shot both groups at 330 yds, drop has matched the Kestrel calculations with BC G1= 0.485. Later I've shot at up 650yds, the drop was again matching the calculation. Conditions on range were at 720ft level and 57°F. I can only confirm the advertised BC G1= 0.485. The drop and the accuracy are more than enough for my hunting purposes.

 

[johnfred1965]

Applied Ballistics solver library lists the 140 ballistic silvertip(same bullet with black coaating) at .417 G1 and .213 G7