Originally Posted by MikeMcGuire
No, I meant a 6.5/378. Actually I would prefer a 270/378 and would have preferred a 270/300, just prefer the 270 bore over both the 6.5 and 7mm.


Originally Posted by DBoston
The 6.5x378 has been done already, can you say diminishing returns? Hill Country Rifles has decided to not do anymore 6.5x300 Wby's as they can't guarantee the accuracy, I believe they will still do the 26 Nosler. This is contrary to the older wins at 1,000 yards with the Pennsylvania shooters in I believe the 1960's or 70s. Few shoot them now.

Anything smaller than the 7mm STW seems cantankerous to work up loads for, this is from what I have read, no first hand experience.


Thanks for the info.

Yesterday, I got the group on the right with 127gr LRXs from my factory Wby un-floated Accugaurd with a replacement free-floated B&C stock. The one on the left is my son shooting his 7mm Wby MkV.

[Linked Image from i.imgur.com]

So, it seems I've found a load that works with my 6.5-300.