6mm bullets

[quigley257]

My 6mm ARC gas gun is nearing completion. I am looking at a few different bullets for it. One of these is the Hornady 105gr BTHP Match bullet, the other is the Barnes 112gr Match Burner. Hornady lists the G1 BC of the 105 at .530 and the Barnes is listed at .624. Surely one of these numbers is farther from the truth than the other. Does anyone have experience with either of these bullets as far as truing up the BC? Both of these seem to be economical choices versus the ELD-Ms, A-Tips or TMKs. The hornady 105 only gives up .006 in BC compared to the ELD-M version which run on average $10/box more than the BTHP match bullet. I'm struggling to believe that the Barnes is nearly .096 higher than the Hornady bullet. The 110gr A-Tip is listed as a .604 BC, .010 less than the Barnes. Maybe I'm missing something. Please chime in if you have trued numbers for either of these. Thanks.

 

[Pdyson]

Barnes and Nosler have been known to fudge their BCs in the past. Bryan Litz tested Barnes and Nosler against Berger in 7mm and 30 cal and found Barnes BCs were 5% over actual. Here is a link to the article.

Barnes’ tests proves why Berger Hunting VLDs are so successful

Recently, Barnes did several tests to compare Berger and other competition to their hunting bullets. They prove why Berger Hunting VLDs are so successful.

bergerbullets.com

 

[QuietTexan]

How far are you shooting this thing?

If you aren't shooting more than 600 yards what does it matter? Ignore the BC and shoot whatever shoots well in the rifle.

If you are shooting more than 600 yards, then know that G1 is functionally useless. Shoot your real drops, use muzzle velocity to true up out to 600, then tweak BC to make it work however far you need it to.

The core issue here might not be what you think - BC matters less than consistent BC. I'd take a very consistent .400 G1 over a .650 G1 that any given bullet might be .625 or .675. This is where Litz's Ballistic Performance of Rifle Bullets comes in handy - to look up the stats on the BC for any particular bullet and not just the one number on the box. BC is dynamic and changes with velocity, so shooting an identical 108gn Berger Target BT from a 6 ARC and a 243 AI will have different BCs at any arbitrary range due to velocity differences.

Ballistic Performance of Rifle Bullets 3rd Edition

store.appliedballisticsllc.com

FWIW I shoot a lot of both Hornady BTHPs and Barnes Match Burners. Using the AB CDMs the app spits out surprisingly accurate drops, but past about 800 yards in my 6.5 CM is where the 140s start getting inconsistent. I've used a Hoover trimmer to try to even out the points, and have a Whidden pointing setup to close them back down some. I have 1k of the 112gns 6mms on hand, haven't used them in the 243 AI yet but might if the Berger 108s don't work out.

 

[quigley257]

Barnes and Nosler have been known to fudge their BCs in the past. Bryan Litz tested Barnes and Nosler against Berger in 7mm and 30 cal and found Barnes BCs were 5% over actual. Here is a link to the article.

Barnes’ tests proves why Berger Hunting VLDs are so successful

Recently, Barnes did several tests to compare Berger and other competition to their hunting bullets. They prove why Berger Hunting VLDs are so successful.

bergerbullets.com

LOL... funny that you get the 404 not found message when you try to click on the Barnes link.

 

[Pdyson]

LOL... funny that you get the 404 not found message when you try to click on the Barnes link.

Yep! They scrubbed all mention of lab tests on their website after they got busted.