Any reason not to go 6BR?

[Infrequent Shooter]

Yes that seems to be an issue, I'd rather get the required performance comfortably. Better to step up in case capacity than push too close to the edge. Straight BR or BRA are the easiest choices for me, Lapua brass, SRP(I have quite a few), accurate, low recoil, ok barrel life. It's that or Lapua 6GT I think if I want to push slightly heavier bullets/use my existing magazines. I looked at 6XC, probably a bit more capacity than I need and brass is unavailable and £180/100 when in stock here.

I looked at a line up of the 6mm cartridges. I was surprised how big the 6xc compared to others!

 

[Tangent]

I looked at a line up of the 6mm cartridges. I was surprised how big the 6xc compared to others!

Yes it doesn't look much smaller than 6CM. Seems too much for med range and at 1000yd I think there are other larger cartridges that would best it in the wind.