Howa mini-action in grendel to be released in mid-2016

[adamjp]

Let me pull down some arbitrary numbers just to help focus the discussion. If we operate under the assumption that Hornady, Lapua, PPU and Nosler 6.5 Grendel BRASS — not talking about AR15 bolt — can easily handle 60,000 psi pressure rounds or whatever they shoot 6mmPPC at, what are the pros and cons of loading to, oh, 58,500 in a new Howa Mini-Action (MA)?

The expectation would be to gain 100-200 fps more velocity. (This assumes the next step up, something like the 6.5 Creedmoor, gains 350-450 fps per bullet in equal-length barrels at about 60,000 psi vs. the 65G. And feel free to question my assumptions! Let's get on the same page — this isn't ARF.com.)

Is this doable in the MA? Doable with caveats? Insane? Let's explore this from a technical perspective.

FFS, ignore the person who has been shooting a Grendel bolt gun for years and make it up as we go.

Grendel brass is NOT PPC brass.
Grendel chambers are not tight match chambers found in PPC.
Grendel reloading dies are not minimum disruption straightline dies found in PPC benchrest.

Grendel cases by Lapua cannot be run at 60k PSI with any expectation of even moderate life.

It has nothing to do with the action and everything to do with the brass.