6BR Vs 6.5 X 47L?

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lyle1

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I am curious to hear various opinions between these two cartridges. Why would Lapua bring out this new cartridge to beat the 6BR for 300m competition when the 6BR appears to do a better job with roughly ten less grains of powder. Is the 6.5 supposed to be more accurate at closer and/or longer range? Does the cartridge have enough "horsepower" to push the ballistically superior 140g class bullets? It looks like barrel life isn't quite as good as the 6BR? To me it looks like the biggest advantage of the 6.5 is the ability to feed well in a magazine.....opinions/experiences, would be much appreciated......:)
 
actually, the 6.5 lapua was touted as being for 3-600M ISSF competition, which is iron-sight shooting popular in Europe. It also received a tremendous amount of shooter input during development.

6.5mm bullets in the weights typically used for the Lapua cartridge have BC's that are comparable to the heavy 6mm's, and in some cases they are better. It has good inherent accuracy, but I feel the BR is better. For the amount of powder it burns, it is actually quite efficient.

In 3-600M F-Class, I think they are pretty closely matched, but if the 130 Berger VLD is used, it has a ballistic edge. BC is everything in long distance shooting and it delivers a great balance between recoil, barrel life and ballistic coefficiency.

I think now it has been around for a few years, it is easier to make work, but I know it was a frustrating cartridge for a significant number of shooters when it first came out.
 
6.5X47 Lapua now dominates 300 metre shooting and is a fine cartridge to 900 metres and has set 600 metre BR records. Fine cartridge and there are great 6.5 bullets.
 
Both excellent options.

The 6.5 offers a bit less wind drift and a bigger scoring hole. Inside 5 vs outside 4

Either can win in the hands of a capable shooter on any given Sunday.

Both have superb factory Lapua ammo

The 6BR is a bit less money to shoot. Quite a bit more support from the reloading industry re dies and components

Barrel life should be comparable.

Nice to have so many awesome target rds to choose from.

Either can be made to run through a mag IF you choose the correct chassis and mag.

Jerry
 
I have to disagree with peter, the 6mmBR is still the dominant 300M round in F-Class, in fact, it is interesting how many people are returing to this round after dabbling in the bigger better mousetraps.

Bullet size does not matter in F-Class because every shot is subject to the 8mm rule. Whether you use a 20 cal or a 32 cal, the hole for score is deemed 8mm across, and you are given credit for the higher value if the center of your shot comes within 4mm of the ring. This is how "Challenges" are evaluated.

If you want easy to use, less powder, better barrel life, cheaper bullets and exceptional inherent accuracy, go 6BR. Its long range performance is likewise fantastic, and I have regularly shot this round, with 105 VLD bergers on my neighbour's property to one mile at gongs , and have no trouble making them hit with great accuracy.

The best componenets for this cartridge are all made by Lapua, so it is win-win as far as I'm concerned for the exceptional Hirsch Precision, Peter and lapua!
 
Obtunded said:
Bullet size does not matter in F-Class because every shot is subject to the 8mm rule. Whether you use a 20 cal or a 32 cal, the hole for score is deemed 8mm across, and you are given credit for the higher value if the center of your shot comes within 4mm of the ring. This is how "Challenges" are evaluated.
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I've never seen this done in any competition I've attended in Canada or the US. Outside edge of the bullet hole is the scoring index as far as butt crew is concerned. I have never seen a an 8mm template in use, or even an 8mm template or plug.

NormB
 
NormB said:
I've never seen this done in any competition I've attended in Canada or the US. Outside edge of the bullet hole is the scoring index as far as butt crew is concerned. I have never seen a an 8mm template in use, or even an 8mm template or plug.

NormB
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Then they were not abiding by ICFRA rule F12.7
 
I was not aware of the 8mm rule. To me, that is a mickey mouse rule which compounds the benefit of the smaller cartridge. Less recoil, easier shooting, and no scoring deficit. A sorry rule which will work to limit cartridge experimentation and development (not that any such is needed). Although I seldom use mine, my vote would go to the 6BR. Regards, Bill.
 
Obtunded said:
Bullet size does not matter in F-Class because every shot is subject to the 8mm rule. Whether you use a 20 cal or a 32 cal, the hole for score is deemed 8mm across, and you are given credit for the higher value if the center of your shot comes within 4mm of the ring. This is how "Challenges" are evaluated.
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It was 8mm before ICFRA changed it to 30cal

F12.7. When a shot touches the line between two divisions of the target, the competitor will be credited with the higher value. In case of doubt a gauge of 7.82mm diameter (=0.308 inches) will be used (regardless of the actual calibre in use) to determine the value of the shot. The ruling by a Butt Officer will be final.
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That being said I do not believe that a gauge is ever used here in BC, even at Provincials, in the past few years that I have been in the sport.

Benefit usually goes to the shooter if you are teetering on whether or not it is breaking the line in anyway, shape or form. At least it is when we pull targets.
 
CyaN1de said:
It was 8mm before ICFRA changed it to 30cal



That being said I do not believe that a gauge is ever used here in BC, even at Provincials, in the past few years that I have been in the sport.

Benefit usually goes to the shooter if you are teetering on whether or not it is breaking the line in anyway, shape or form. At least it is when we pull targets.
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Ian's right- that is the rule, but I don't think it's actually applied and more than simply giving the benifit of the doubt to the shooter. I certainly have never seen it applied.
 
The rule is unworkable

CyaN1de said:
It was 8mm before ICFRA changed it to 30cal



That being said I do not believe that a gauge is ever used here in BC, even at Provincials, in the past few years that I have been in the sport.

Benefit usually goes to the shooter if you are teetering on whether or not it is breaking the line in anyway, shape or form. At least it is when we pull targets.
Click to expand...

The reason it is not used anywhere is that it is totally unworkable. Even if a template were available (which it is not) every near miss of a line would have to be gauged when shot with caliber smaller than .308. Now does the butt crew know the caliber? Not in my experience and they change around. Second, scoring on a black target with a black template line would be difficult at best and impossible at worst.

If a plug gauge is used, they normally can only be used once. If pulled before a challenge for higher score, the butt officer couldn't put it back without enlarging the hole if he is checking the challenge. Challenges rechecked by plug gauges would be invalid.


NormB
 
Personally, I think the larger scoring circle is not a good thing and glad that it isn't used in practise (and certainly wasn't mentioned to me the times I scored).

If you want to get a big hole in your target, shoot a big bullet and all the joy that goes along with it.

But I'll likely waffle next season when I start pushing 22cal slugs downrange :)

Jerry
 
Actually there ARE bullet templates at the local ranges here and the BCRA ranges. Butts officers are supposed to know this and they are supposed to use it as the basis for scoring and challenges.

the "8mm rule" as it is called is based on the fact that it is supposed to make everyone's shot the same size as the largest allowable caliber. (32 cal or 8mm). I didnt make it up, it's just there and when you participate in a sport, you should know the rules. If we really want to argue over 0.18mm...:D

This is an ICFRA rule for ICFRA competition, If your local PRA or club uses different rules, that is totally OK.
 
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