What twist for 30BR

rputansu said:
Alinwa brings up a curious point with the 30X47. This seems to be a versatile cartridge but how much of a hastle would it be to switch from group, score and HBR? Money always seems to be an issue so I will most likely stick to single purpose rifle for a while. I will have to take a look at the 6.5X47 and compare it to the BR case.
Is there an advantage of 30X47 over the 30BR?
Robert
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The advantage of the 30X47 is that it's legal for Hunter Bench Rest where the 30BR is not. The 30BR is responsible for a resurgence of Varmint For Score Shooting and for the decline of Hunter Bench Rest.

In my short experience with the 30X47 I find it to be equally amenable and as accurate as the 30BR.


The switch is accomplished by bolting/unbolting the aluminum forend plate and by changing out the scope. YES it's a bit of a hassle but you're actually competitive with ONE rifle.

HBR= 10lb rifle, 30cal case w/45gr H2O capacity and limited to 6X scope (or taped down variable) with a 2 1/4" wide forend. This is your "base rifle.

VFS= 10.5 or 13.3lb rifle, any case/cal, any scope power. 3" wide forend permitted. For these disciplies you bolt on your forend plate and add weight as desired into the buttstock. Upgrade your scope power.

Group= 10.5 or 13.5lb rifle, any case/cal, any scope power. 3" wide forend permitted. For these disciplines you bolt on your forend plate and add weight into the buttstock as desired. Upgrade your scope power.


hth


al
 
alinwa said:
The 30BR is responsible for a resurgence of Varmint For Score Shooting and for the decline of Hunter Bench Rest.
Click to expand...

I think you give the 30 BR way more credit than it is due when you claim it has caused the decline of Hunter Class shooting, there is no VFS to go to in NBRSA and in IBS the 3O BR is the cartridge of choice in Varmint Hunter class.

The decline of Hunter class is due to other Factors.
 
Something to also consider...........

............The "hunter" classes of both organizations require at the very least a magazine cut-out in the bottom of the receiver.

Some claim this compromises rigidity and therefore........... accuracy.

You don't say if you actually intend to shoot competition.......If you do my advice is to hook up with someone doing so and perhaps you can actually shoot the guns of the various disciplines.

As simple as it may seem, the various classes are difficult for laymen to grasp.

I recently had 2 rifles chambered to 30 BR and have started to shoot both VFS and Varmint Hunter at most matches, because I really enjoy both disciplines.

I have noticed a trend toward shooting 2-guns ( different classes) at score matches and it is good to see the hunter classes may not be on the verge of extinction.

FWIW...My Rem. 700 10# VH in 30 BR is at MY threshold of recoil tolerance...............I did consider the larger cases for Hunter class, but am glad I didn't go there......................Remember in competition you will shoot around 50 rounds/event...............and every one of those shots have to be let off EXACTLY the same----------Extremely difficult do .
 
Dick

It has been a while since we got into the "why nobody wants to shoot HBR", but in the Gulf Coast Region, you could use your fingers and toes to count the number of active HBR shooters and still have one shoe on.

I know a lot of shooters who are wanting to build 30BR's and 30PPC''s, but none are interested in building a legal HBR Rifle........jackie
 
The IBS and NBRSA Hunter classes mandate a smaller barrel profile than the Varmint classes. Additionally, the recievers cannot be wider than 1.400 and must have a cutout for a follower in them. The popular Panda and Viper actions used in the Varmint classes are 1.500 wide.

In contemplating building a (10.5 lb) 30BR...which is technically a Sporter class gun since the bore is bigger than .230...an NBRSA Hunter barrel profile will give the rifle a better balance than the normal LV profile. I've built 10.5 lb. 30BR's both ways and the balance issue is huge. A nose heavy 10.5 lb. 30BR in a 3" fore end stock can be an evil thing.

A HV (13.5 lb) 30BR using a LV barrel of no more than 22" length with the weight properly distributed in the stock (not always hung in the butt) is an absolute joy to shoot.

You can also get these 13.5 lb. HV's nose heavy with a HV barrel around 24" long and a very light stock...then aggravate the entire deal further by hanging a 36 oz. scope (think NiteForce) 3" above the bore. With that much weight that far above the bore on a nose heavy combination...when the rifle torques in recoil the weight being higher aggravates an already bad situation. You've effectively made the 'lever' longer that wants to twist the rifle out of the bags.

A well balanced 10.5 lb'er will go around a Score target a whole lot better than a nose heavy 13.5 lb. gun.

A nose heavy rig will almost always shoot good groups..but a Score rig is about going around a target with no change in the P.O.I. from the sighter to every record target.

Just my 2 cents worth. You can probably even get change back. ;) -Al
 
jackie schmidt said:
It has been a while since we got into the "why nobody wants to shoot HBR", but in the Gulf Coast Region, you could use your fingers and toes to count the number of active HBR shooters and still have one shoe on.

I know a lot of shooters who are wanting to build 30BR's and 30PPC''s, but none are interested in building a legal HBR Rifle........jackie
Click to expand...

Hey Jackie
You are Right it is somewhat unfortunate but there's very little activity in the Hunter classes down south, it seems to be more a NorthWest, MidWest, and Western thing.

Dick
 
Why not just drop the case capacity rule in HBR and combine varmint hunter and HBR?:D

Flame suit "ON"-----Mike Ezell
 
Mike

As the HBR class evolved over the years, certain things were dropped, such as safeties, functioning magazines, the ban on "target sights", etc. But, there are two features that now define the class, and are carved in Granite. They are the minimum case capacity, and the 6x scope........jackie
 
mturner said:
Most people on here have realized the accuracy advantages of using as slow a twist as you can get by with and still stabilize the bullet. Here is another big advantage. Let's take a 150 gr bullet at 3200 fps and you will have a bullet rpm of 230400. Now the same bullet out of a 16" twist will have an rpm of 144000. That's 86400 lets rpm. This drastically changes the bullets ability to penetrate to the vitals of game. So you hunters need to try this. I was actually a little disapointed in how the Ballistic Tips don't expand as much on neck shots on deer. It used to bore a 3" hole through the neck with a 10" twist, but with a 16" twist it's more like 1.5" hole. Now rather than using 180-200 gr bullets with a 10" twist in my 30-338 Win Mag for Elk hunting, I will be using 150 gr pills and a 16" twist with equal penetration.

Michael
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Mr. Michael Turner, do you really believe, that your out of place useless piece of information has a chance to be voted as the most important post on the BR forum?

Con
 
I'm an advocate of both the IBS and NBRSA dropping the case capacity requirements for Hunter class.

In the IBS world, this would give us one 6 Power class. IBS's Varmint Hunter is identical to Hunter with the exception of having no case capacity minimum.

In the both organizations, I believe the elimination of the case capacity rule may possibly bring more competitors to the game. The 30BR road is pretty well mapped out and this would eliminate all the hassles of case forming, reamers, dies, etc. for shooters contemplating the buiding of a Hunter rig.

For me, the two defining factors in Hunter are the 6 power scope and the 2.25" fore end.

In fact, given a hypothetical choice to shoot 100 yds. with either a 6 power scope and a 3" fore end...or a 36X scope and a 2.25" fore end...I'd opt the former.

Now at 200 yds, my choice would be just the opposite. -Al
 
I may be asking what is obvious to others but where can I find the rules and regulations for all of the BR venues?
Thanks for all the great comments, suggestions and personal experiences.
Robert
 
Robert

Go back to the home page. Look on the right, and you will see both the NBRSA and IBS logo. Just click on these, and the info on the sites will take you to the rule books..........jackie
 
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