6mmx47 Lapua as a varmint caliber

Chuckster · #1 08-13-2007, 06:48 AM

Does anyone know what the ballistics are for the 6x47 Lapua shooting lighter bullets (60-80)gr? All the specs I find are for the heavier bullets (95-107)gr.
Considering this caliber for a new varmint rifle. It should have the inherient accuracy of the 6br but more case capacity, hoping to drive 70gr at 3600-3700. Another plus would be easy to assemble brass from 6.5x47 Lapua.

Any input welcome

Thanks

wildcat · #2 08-13-2007, 05:12 PM

Chuck, from what I know about the 6x47, it is a good varmint round. However, you will not be able to get the velocity you want with a 70grn bullet. From what I now about the cartridge, you will be able to push the 70grn bullet out of a 26" barrel at around 3150fps. You could probably get 3250 with a 30" pipe.

If I were you, I would look at the 243. The 243 will push a 70grn bullet between 3500 to 3600fps out of a 30" pipe. The 243 will also push the 87grn V-Max at around 3300 to 3400fps out of a 30" pipe. The 87grn V-max is an excellent bullet for varmint hunting and it has a BC of .400.

Also, Lapua makes excellent 243 brass. The 6x47 is an excellent round, however, I am thinking the 243 will be better for what you want to do.

Anyhow, I hope this helped. I am a 6mm guy too. My favorite 6mm is the 6x284, fast and accurate.

Wildcat

huntinfool18 · #3 08-13-2007, 06:23 PM

arent they getting 3100 with the 107 MK? i think you could get around 3300-3350 with a 70 gr bullet but i could be wrong. huntinfool18

wildcat · #4 08-13-2007, 06:57 PM

Huntinfool, I might be wrong too. I think your right and I might be wrong. It looks like the 6x47 is similar to the 6BR Improved version.

Wildcat

wildcat · #5 08-13-2007, 07:05 PM

Chuckster, I might be wrong about the velocity with the 6x47. Look at 6mmbr.com, there is some good stuff on that website.

Wildcat

Chuckster · #6 08-14-2007, 07:51 AM

Guys,
Thanks for the replys, The 6x47 Lapua I am speaking of is a relativly new round. It is the 6.5x47 Lapua necked down to 6mm. In the 6br website there is info but it is all on 105-107gr bullets.

I am afraid I will have to go to a 6/284 or 6mm AI to get the velocity I want but I may decide to trade velocity for accuracy.

Any input as to the accuracy I could expect from a 6/284?

Chuckster

BountyHunter · #7 08-14-2007, 07:54 AM

Guys are running 105-107 from 3100-3200 with best accuracy at 3100 in the 1k BR game.

That seems to indicate that the 6x47 with a 70 should be 3300-3400 with the right twist.

BH