6BR loading tips
- Emietenkorte
- A Poster
- Posts: 229
- Joined: Fri Apr 11, 2014 7:41 pm
- Location: Ephrata, WA
Re: 6BR loading tips
No problem! I have a 26" Barrel and I am getting 2800 FPS with the 95gr. Berger, I could probably slow it down but it shoots like a laser and I don't mind the extra "recoil" that velocity brings. The 115gr. Berger is moving at 2700 FPS, does a pretty good job with rams so far....MTelkhunter wrote: ↑Thu Feb 11, 2021 6:51 am Thanks Erich. I do have a few pounds of VV 140 so will do a little experimenting.
-
- AAA Poster
- Posts: 514
- Joined: Wed Oct 14, 2009 11:39 am
Re: 6BR loading tips
Why are you guys running your loads so hot? Does the cartridge require it? Are you using the longer Norma chamber?
What would you recommend for a milder load? If it matters, I hit the lands at 2.270 with 90 grain bergers. I have tried 28 and 28.5 grains of Varget for short animals and 26 grains with the 107 sierra for Rams. I don't remember the COAL of the 107s.
Appreciate your wisdom.
What would you recommend for a milder load? If it matters, I hit the lands at 2.270 with 90 grain bergers. I have tried 28 and 28.5 grains of Varget for short animals and 26 grains with the 107 sierra for Rams. I don't remember the COAL of the 107s.
Appreciate your wisdom.
- DavidABQ
- Expert Master Poster
- Posts: 1819
- Joined: Mon Jul 27, 2009 9:33 pm
Re: 6BR loading tips
I would think that with the kinetic energy equation; KE=0.5(Mass)(Velocity^2) that you would with to optimize the velocity for my kinetic energy when the bullet strikes the target. Even with the momentum equation; P=(Mass)(Velocity) you would want to maximize the velocity to increase the momentum transfer from the bullet to the target.
Maybe I am wrong? Hopefully someone much smarter than me will chime it.
-
- AAA Poster
- Posts: 684
- Joined: Tue Jun 11, 2013 3:07 pm
- Location: West Monroe, LA
Re: 6BR loading tips
I think there might be a point of diminishing returns in regards to higher velocities. At some point the bullet will explode upon impact rather than transferring the energy into the target? No?
I am NOT Danny Hatch.
- DavidABQ
- Expert Master Poster
- Posts: 1819
- Joined: Mon Jul 27, 2009 9:33 pm
Re: 6BR loading tips
I agree but where is that line? Is it above safe maximum loads or a somewhat lower velocity? I was just theorizing why a shooter would want to run higher velocity’s for silhouette.
-
- AAA Poster
- Posts: 684
- Joined: Tue Jun 11, 2013 3:07 pm
- Location: West Monroe, LA
Re: 6BR loading tips
I think the line is probably very dependent on the specific bullet, but I don't think it would be far fetched to think it would be below max velocity considering most of these bullets weren't designed to be slammed against steel at those speeds.
I am NOT Danny Hatch.
- Emietenkorte
- A Poster
- Posts: 229
- Joined: Fri Apr 11, 2014 7:41 pm
- Location: Ephrata, WA
Re: 6BR loading tips
For me, that's the load that was most accurate. Every chicken, pig, and turkey that I have hit has gone down. Berger bullets hold together really well on the steel so I just run it. I try not to overcomplicate things... accuracy and effectiveness on target works for me.
Another thing, I travel up North to the Bull River Shooting Range up in Cranbrook, British Columbia whenever I can and they have some heavy pigs, I've seen slower 6BR rounds ring them.
Another thing, I travel up North to the Bull River Shooting Range up in Cranbrook, British Columbia whenever I can and they have some heavy pigs, I've seen slower 6BR rounds ring them.
-
- AAA Poster
- Posts: 514
- Joined: Wed Oct 14, 2009 11:39 am
Re: 6BR loading tips
Does anyone have access to a published load for the 90 grain bergers? The Sierra loads I have on hand list 29 as max for the 107, but it does not list a 90. I have tried to extrapolate from some published loads for the 85 grain sierra, but apparently there are two different chamber lengths in use. For what it is worth, the man who built my rifle said he got pressure signs at 29 grains. I think he was pushing the bullet hard into the lands though if that makes difference.
- Emietenkorte
- A Poster
- Posts: 229
- Joined: Fri Apr 11, 2014 7:41 pm
- Location: Ephrata, WA
Re: 6BR loading tips
SqHunter wrote: ↑Sun Feb 14, 2021 12:06 pm Does anyone have access to a published load for the 90 grain bergers? The Sierra loads I have on hand list 29 as max for the 107, but it does not list a 90. I have tried to extrapolate from some published loads for the 85 grain sierra, but apparently there are two different chamber lengths in use. For what it is worth, the man who built my rifle said he got pressure signs at 29 grains. I think he was pushing the bullet hard into the lands though if that makes difference.
Vihtavuori has a 90gr. Lapua Scenar listed in their reloading data using N140 which is very similar to Varget... but better. Not exactly what you were asking for but it may be a place to start.
https://www.vihtavuori.com/reloading-da ... rtridge=63
-
- AAA Poster
- Posts: 514
- Joined: Wed Oct 14, 2009 11:39 am
Re: 6BR loading tips
Thank you. I wonder if my chamber being a little shorter than the norma is why I get pressure signs at 29 grains while everyone else seems to be able to run 30 or more?Emietenkorte wrote: ↑Mon Feb 15, 2021 12:02 amSqHunter wrote: ↑Sun Feb 14, 2021 12:06 pm Does anyone have access to a published load for the 90 grain bergers? The Sierra loads I have on hand list 29 as max for the 107, but it does not list a 90. I have tried to extrapolate from some published loads for the 85 grain sierra, but apparently there are two different chamber lengths in use. For what it is worth, the man who built my rifle said he got pressure signs at 29 grains. I think he was pushing the bullet hard into the lands though if that makes difference.
Vihtavuori has a 90gr. Lapua Scenar listed in their reloading data using N140 which is very similar to Varget... but better. Not exactly what you were asking for but it may be a place to start.
https://www.vihtavuori.com/reloading-da ... rtridge=63
-
- B Poster
- Posts: 45
- Joined: Tue Apr 26, 2016 10:20 am
- Location: Houston
Re: 6BR loading tips
A shorter chamber can definitely limit your case capacity. Also, what kind of pressure signs are you seeing? With a factory action, the 6BR is prone to flowing its primers into the firing pin hole, especially to get up to 2800fps and beyond. Many shooters with factory actions get their firing pin hole bushed, to tighten up the tolerances there. If you have a custom action this shouldn't be a problem.
As a point of reference, I'm running a Savage action with a Criterion barrel in 6BR. With H4895, I found a really good accuracy node around 2600fps, and around 2700 the primers are wanting to flow back into the firing pin hole. So I stay at 2600. This is for an any/any sling rifle.
As a point of reference, I'm running a Savage action with a Criterion barrel in 6BR. With H4895, I found a really good accuracy node around 2600fps, and around 2700 the primers are wanting to flow back into the firing pin hole. So I stay at 2600. This is for an any/any sling rifle.
-
- AAA Poster
- Posts: 514
- Joined: Wed Oct 14, 2009 11:39 am
Re: 6BR loading tips
Thanks for the info. Wish I had a chrony to compare our results.mychippy wrote: ↑Fri Feb 19, 2021 7:15 am A shorter chamber can definitely limit your case capacity. Also, what kind of pressure signs are you seeing? With a factory action, the 6BR is prone to flowing its primers into the firing pin hole, especially to get up to 2800fps and beyond. Many shooters with factory actions get their firing pin hole bushed, to tighten up the tolerances there. If you have a custom action this shouldn't be a problem.
As a point of reference, I'm running a Savage action with a Criterion barrel in 6BR. With H4895, I found a really good accuracy node around 2600fps, and around 2700 the primers are wanting to flow back into the firing pin hole. So I stay at 2600. This is for an any/any sling rifle.
The bolt is hard to lift sometimes and it does not extract smoothly at others. That was with 28.5 of varget and 90 grain bergers. I have some 28 grain loads to try ,but it is a two hour drive to get to anywhere I can shoot a centerfire so working up a load has proven to be a real pain in the butt
-
- B Poster
- Posts: 45
- Joined: Tue Apr 26, 2016 10:20 am
- Location: Houston
Re: 6BR loading tips
Are you full-length sizing your brass? If not, you should be. Check out the video here about clickers:SqHunter wrote: ↑Sun Feb 21, 2021 8:24 am Thanks for the info. Wish I had a chrony to compare our results.
The bolt is hard to lift sometimes and it does not extract smoothly at others. That was with 28.5 of varget and 90 grain bergers. I have some 28 grain loads to try ,but it is a two hour drive to get to anywhere I can shoot a centerfire so working up a load has proven to be a real pain in the butt
https://www.wheeleraccuracy.com/videos
Also watch the one about finding your lands. This will let you discover if you are pushing the bullet into the case farther than it needs to be, or if you have the bullet out too far and it's wedged into the barrel. Both conditions can cause excess pressure.