Range Report 130 gr Berger VLD Match

[Rthur]

Has anyone had to increase the bc of this bullet on their ballistic program to get a reasonable soulution? I tried using the g1 of 552 and the g7 of 282. The g1 seems to work better for this particular bullet. I guess I should mention that I am using BulletFlight. My muzzle velocity is 2990 average over a oehler 35p, it has been checked several times and in many conditions. I tried raising the velocity with poor results at distance. I adjusted the bc to 565 and started to get good results. This data has only been comfirmed to 800 yards because that is all I have access to shoot.

 

[BoilerUP]

Re: 130 gr Berger VLD Match

What are you pushing it from, a 260? If so, what's yer recipe?

 

[Rthur]

Re: 130 gr Berger VLD Match

Yes, sorry I should have mentioned that. My recipe is:
nosler 7-08 brass
130 vld
45.9 gr h4350
wolf lr primer
oal 2.870ish
ES-13 Sd 7
The rifle is a UGSW Infidel, 22.5" bartlein

 

[gvanhyning]

Re: 130 gr Berger VLD Match

If you're using Bullet Flight on an iPhone, I would recommend using Ballistic. It uses JBM and IMHO is much better than Bullet Flight. Have you checked your data online with the JBM calculator?

 

[Rthur]

Re: 130 gr Berger VLD Match

I have not gvan, it has been very accurate on other loads. I can still get good solutions with this program. I just found it unusual to be increasing the bc on this particular bullet. I was also wondering if anyone else has found this with this bullet. My past experience has always to decrease the bc on most bullets advertised bc.

 

[gvanhyning]

Re: 130 gr Berger VLD Match

I shoot a 6.5x47 Lapua and my primary load has been 123 Scenar. I did have a 130 Berger load but after showing pressure signs in the heat, I've had to go back to the drawing board. When I was shooting the 130's I never saw more than 3/4 MOA variation from the calculated data and that was always at 600 to 1000 yds.

 

[wadebrown]

Re: 130 gr Berger VLD Match

I have used the 130 g Berger VLDs in my 6.5 x 47L and compared the trajectory from JBM using Bryan's measured G7 BC and the match between actual and JBM's predicted is spot on as usual. I have verified drops out to 1,000 yards with the 130 g VLDs. That data has been validated over three barrels in my 6.5 L and I also validated the data using my 6.5 x 55 AI, all shot out of my F-class rig.

I always figure if actual data does not strongly correlate with JBMs your measurement of the muzzle velocity is probably off. Yesterday I ran my new 338 LM out to 1,000 yards on a KD range, using my 100 zero and a JBM drop table in my hand. My 600 yard zero was .1 mil different than predicted and my 1,000 yard zero was .2 mil off of JBM's, and that is not bad considering I did measure the environmentals closely.

Long story short: You can take JBM's predicted drops to the bank if you do your job and get a good measurement of your muzzle velocity and range to target.

wade