Comments on: 6mm Bore Diameter and Bullet Selection

By: Ian Hames

Ian Hames — Tue, 20 Apr 2010 00:19:41 +0000

The 105 6mm Custom Competition bullets are undersized as well; they have been difficult to make work in a 6BR.

By: Rath

Rath — Wed, 24 Jun 2009 14:25:16 +0000

Can anyone say if the 115 DTAC’s work best with a .236 or .237 bore?
Thanks

By: Ian Hames

Ian Hames — Thu, 05 Feb 2009 23:19:26 +0000

I keep a good supply of every type of 6mm match bullet specifically for load development in my various 6mm chamberings. I have never been able to get Lapua 105 Scenars to work well in anything, including numerous .236 Kriegers (I am the Canadian importer for Krieger Barrels). I am stumped… I too found these bullets to be the most consistent in terms of weight and dimension, but Berger VLD’s win every time.

By: LRCampos

LRCampos — Fri, 22 Jun 2007 02:39:27 +0000

Oh boy… what a doubt. Moderator, could you ask the folks at Krieger (next time you talk with them)) what would be the best configuration to shoot equally well the Lapua Scenar, Berger and Sierra? What is your opinion on this?

Being abroad, I canot reach them by phone to and have a good english conversation. And they never answer any email…

By: LRCampos

LRCampos — Thu, 21 Jun 2007 21:02:48 +0000

But how a Berger and Sierra 6mm bullets would shoot from a .236 bore size? The accuracy would be teh same as a .237 bore size? It will cooper foul more?

Moderator: You really can’t tell until you test. Just today I discussed this issue with Krieger and they acknowledged that land configuration (e.g. 3-groove vs. 4 vs. 5-groove, and canted lands vs. regular lands) can make a difference. Jason Baney has a .237″ land-diam Broughton barrel that shoots the skinny Scenars very well. Broughton is known for lapping a bit of choke into its barrels however.