Where is the limit for 6BR?

[slowbalt]

New to 6BR and need some guidance. I wish to not exceed the limit, but am unsure where the limit actually is...

Looking at books, (as an example), I see H4895 between 24.5 and 27.5gr. But when I asked, I was told this was a light load. Browsing through the "Pet Loads" thread, most loads are between 28.5 and 29.9gr. I was always told not to exceed max loads, and not to try to make a cartridge perform out of its class.

I am looking for safety first, accuracy second, then brass life. Where should I aim?

 

[hoz53]

New to 6BR and need some guidance. I wish to not exceed the limit, but am unsure where the limit actually is...

Looking at books, (as an example), I see H4895 between 24.5 and 27.5gr. But when I asked, I was told this was a light load. Browsing through the "Pet Loads" thread, most loads are between 28.5 and 29.9gr. I was always told not to exceed max loads, and not to try to make a cartridge perform out of its class.

I am looking for safety first, accuracy second, then brass life. Where should I aim?

every gun is an individual and the manuals are just general guidance. nobody can tell you what will work in your gun— learn to read pressure signs and work your own loads up- go to the cartridge guides here for some additional guidance.

 

[quest450]

I don't shoot BR but like with any cartrige start low and work up your load in small increments until pressure signs, let the paper tell you what the rifle likes.

 

[Mulligan]

New to 6BR and need some guidance. I wish to not exceed the limit, but am unsure where the limit actually is...

Looking at books, (as an example), I see H4895 between 24.5 and 27.5gr. But when I asked, I was told this was a light load. Browsing through the "Pet Loads" thread, most loads are between 28.5 and 29.9gr. I was always told not to exceed max loads, and not to try to make a cartridge perform out of its class.

I am looking for safety first, accuracy second, then brass life. Where should I aim?

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CW

 

[Webster]

New to 6BR and need some guidance. I wish to not exceed the limit, but am unsure where the limit actually is...

Looking at books, (as an example), I see H4895 between 24.5 and 27.5gr. But when I asked, I was told this was a light load. Browsing through the "Pet Loads" thread, most loads are between 28.5 and 29.9gr. I was always told not to exceed max loads, and not to try to make a cartridge perform out of its class.

I am looking for safety first, accuracy second, then brass life. Where should I aim?

What weight bullet? I have several manuals to look up in. The powder manufacturers should have loads on their website.

 

[BoydAllen]

Any time that I am trying a new powder I do a one shot per load pressure test, with bullets seated into the rifling a little bit, around.006.
For the 6BR I would probably use .3 gr. increments, paying close attention to bolt lift and the primers. When I get to a load that is a little warmer than I want, I make a note of the load that was one step down, as my maximum load for that temperature and humidity. I find that knowing where the max is for my rifle, that bullet and the particular lot of powder that I am shooting, to be a good place to start working from. The only thing that I use published data for is to come up with a safe starting load for this test.

 

[slowbalt]

What weight bullet? I have several manuals to look up in. The powder manufacturers should have loads on their website.

105-107gr

 

[dgeesaman]

Book loads are always below where benchrest shooters with heavy duty single shot actions usually load. And that’s fine.

I agree to do load ladders and there is no award for running the hottest load (except maybe bonus points with your barrel supplier and gunsmith).

Most of the loads people talk about here are for Benchrest rifles so take care.

 

[pdog2225]

New to 6BR and need some guidance. I wish to not exceed the limit, but am unsure where the limit actually is...

Looking at books, (as an example), I see H4895 between 24.5 and 27.5gr. But when I asked, I was told this was a light load. Browsing through the "Pet Loads" thread, most loads are between 28.5 and 29.9gr. I was always told not to exceed max loads, and not to try to make a cartridge perform out of its class.

I am looking for safety first, accuracy second, then brass life. Where should I aim?

105-107gr

I have one 6 br. It is a savage mdl 12 and has a shilen pre-fit 26" long and 1in8 twist. I shoot long range steel and like you I wanted to know the limits of the varget powder with 107 smks. That 30.0 load is a good one. I tried 30.3, 30.6 and 30.8. The 30.8 had a stiff bolt lift and was not as accurate as 30.0 at 1450 yds. Start lower and work your way up. Pdog2225

 

[JEFFPPC]

I have one 6 br. It is a savage mdl 12 and has a shilen pre-fit 26" long and 1in8 twist. I shoot long range steel and like you I wanted to know the limits of the varget powder with 107 smks. That 30.0 load is a good one. I tried 30.3, 30.6 and 30.8. The 30.8 had a stiff bolt lift and was not as accurate as 30.0 at 1450 yds. Start lower and work your way up. Pdog2225

Real life information as asked for. Thank you pdog2225.

 

[Dgd6mm]

105-107gr

105 hybrid, 2865 fps, 1275 yards.
Give or take 25 yards.
Could be more with DA in your favor.
This would be banging steel and not shooting a scoring target.

 

[Bill Norris]

At best ballpark is about all anyone can give you. Your rifle and your loads will demonstrate the exact max. charge for you.

 

[slowbalt]

I guess the best answer would be how many reloads will brass take at 27gr vs 30gr?

 

[Bill Norris]

I guess the best answer would be how many reloads will brass take at 27gr vs 30gr?

There again all brass is not equal. Different brass manufs. will contain certain amounts of the several make-up components that are within the finished product. Consequently some brass will live longer than others.

 

[JSH]

It’s still a wildcat, manuals run parameters from the test gun or barrel with who knows how many rounds through it.

I and several others I have corresponded/visited with shake our heads every time we hear of some claim of super velocity “with no pressure signs”.

Let the paper and your chrono do the talking, but one has to listen.

 

[Murray Brook]

Most important thing in reloading, IMO, is being able to read pressure. Read all you can on this subject and once you get the hang of this all you will ever need is a starting load for whatever cartridge you may load. What can be max in my rifle can be absolutely safe or low in yours and vice versa.

 

[Rat Rifle]

I guess the best answer would be how many reloads will brass take at 27gr vs 30gr?

From personal experience, 105grn bullets, 30grns H4895, be prepared to get “CASE HEAD SEPARATION“ at the 9th reload. That is a HOT load in most rifles !

27grns of H4895, Your brass will likely last until You are tired of it, depending on how many pieces of brass You have.

Follow all previous advice and proceed carefully.

JMO based on real life shooting

 

[kneedtospeed]

There is no one right answer, but I can Guarantee you that the hottest load is not the Best load, in a Straight BR.

 

[Tesoro]

Dont run before learning to walk. Study up on reading pressure signs first and also how seating depth can influence pressure.

Most important thing in reloading, IMO, is being able to read pressure. Read all you can on this subject and once you get the hang of this all you will ever need is a starting load for whatever cartridge you may load. What can be max in my rifle can be absolutely safe or low in yours and vice versa.

^^^^^^^^

 

[BoydAllen]

From personal experience, 105grn bullets, 30grns H4895, be prepared to get “CASE HEAD SEPARATION“ at the 9th reload. That is a HOT load in most rifles !

27grns of H4895, Your brass will likely last until You are tired of it, depending on how many pieces of brass You have.

Follow all previous advice and proceed carefully.

JMO based on real life shooting

Every single case head separation that I have seen has been caused by repeatedly bumping the shoulder back too far. Your report makes me want to know how you set your FL dies.