30BR for 300 m/y with some constrains

[raro]

First post here - all advises are highly welcome!

I'm from Germany and looking for a benchrest rifle for 300 meter target score discipline.

A possible candidate is a 30BR. But the issue is, that according to the German C.I.P regulation, a minimum freebore should be at least .157" (G-h = 4mm)

https://www.cip-bobp.org/homologation/uploads/tdcc/tab-i/30-br-ge.pdf

Therefore, the nice 112-118 BIB bullets, Robinett Reamer and 17 - 18 twist will probably not work here...

So here are the questions:

1. What bullets and what twist would you take?
2. Is that even worth to try under these circumstances?
3. If not - what could be an alternative in .308 boltface?

Cheers

 

[BRGUY]

30 Bench Rest

Speer 130 gr. Hollow Point

1-13" twist rate

 

[raro]

Wow, really prompt! Appreciate!

What barrel length and contour would you recommend?
Any candidates from Berger or Bart's 30th?

 

[BRGUY]

I shoot a 27" 1.250" straight tube.

Freebore is .062

My gun does not shoot either Berger or Bart's bullets, which is why I shoot those 130 gr. Speer bullets.

300 yard average is 5/8" or less.

 

[raro]

Tx! @BRGUY

 

[KenOath]

Good alternative would be a 6BR, it has a .308bf and is very capable at 300..

 

[raro]

yes, this would be my second candidate

 

[KenOath]

yes, this would be my second candidate

There’s good choices of bullets to from 80 to 108gns.. can go lighter also..

 

[raro]

what would be a good choice in 6BR for FB .105 (CIP min)? I guess something around 100 Gr in 8 to 10 twist?

 

[KMart]

what would be a good choice in 6BR for FB .105 (CIP min)? I guess something around 100 Gr in 8 to 10 twist?

In a 6br, the Berger 80gr fb varmint is a very good choice. The bullet has a long bearing surface and you will be able to reach the lands with the .105 freebore minimum. A 10 twist should work just fine with the 80 Berger. It also works well in an 8 twist.

 

[raro]

@KMart thank you!

 

[bugman]

300 yard average is 5/8" or less.

Care to post some photos of this "average"

 

[North Fork]

I have fun shooting the 125 gr Speer TNT in my 30 BR

 

[raro]

to be honest, I was bit sceptical regarding the speer 125 in 30BR. The plan was to find a way to import BIB's or Cheeks or Bart's (which could be quite tricky now for europeans). Probably I should change my mind.

 

[raro]

Update regarding CIP:

I spent some additional time to analyse CIP pdf's more precisely, and now I'm tending to think, that Zero-FB is possible in CIP. The FB should be s, not G - h . It makes initial question obsolete and leads to the new ones:

BR 300 yards with 30BR rifle:

1. Twist 18 or 17?
2. What Berger or Bart's or Hornady or XYZ could be used (instead of BIB's or Cheeks, which I'm not know for now how to get in Germany). Ok, one candidate is already mentioned above.
3. Barrel length 24 or 26? Or something else?

Thanks!

 

[KMart]

Update regarding CIP:

I spent some additional time to analyse CIP pdf's more precisely, and now I'm tending to think, that Zero-FB is possible in CIP. The FB should be s, not G - h . It makes initial question obsolete and leads to the new ones:

BR 300 yards with 30BR rifle:

1. Twist 18 or 17?
2. What Berger or Bart's or Hornady or XYZ could be used (instead of BIB's or Cheeks, which I'm not know for now how to get in Germany). Ok, one candidate is already mentioned above.
3. Barrel length 24 or 26? Or something else?

Thanks!

Berger makes a 30 cal 115 grain FB Target and they shoot well.

 

[raro]

17 twist should be ok for them, right?

 

[DCRYDER]

17 twist, 22-1/2” barrel is plenty since you will be shooting fast powder (H4198 or RL7), Berger 115’s. Barrel contour at least HV or as heavy as rules allow.

 

[raro]

Weight is not an issue. Short barrel due to the burning rate of powder? I was thinking about 24-26”. Thx!

 

[josh shrum]

I would recommend Berger 115gr 30 Cal FB, 17 twist barrel @24", VV N130.

There really is no need to go longer than 22 1/2 inches. That said, I have run a few 24" barrels in 30BR, only real advantage is that you have room to cut the tenon off and re-chamber it and end up with a 22 1/2" barrel if that barrel is particularly good.

In either length, you will find that the Bergers like to shoot around 3000 FPS, which is easily achieved in either barrel length.

It is the next best thing to impossible to fit enough powder into a 30BR case to get into a higher node. That is where you see people using a wildcat of the 30 BR like a 30 Dasher or 30BRX.

If you have a way of getting a Tuner imported and on the rifle you will be in good shape.