02-16-2020, 04:37 AM
grayfox Wrote:That's where I figure you're going. Essentially it's a case that is just longer than the std Grrr by 0.100" but keeping coal under 2.300....... bullets in mind I was guessing probably 123-129...
I still would estimate that you're talking a bolt action vice AR, I'd guess internal pressures go up to around 55,000-58,000 psi (all guesswork mind you! Where are you QL guys!!!)... so well within a std bolt action which the short action handles 58,000-62,000 psi in 6.5 Creed, 243 Win, 7mm-08, etc, 308...
Kind of a mini-Creedmoor but maxi-Grendel.
If you get ~+160 ft/s with this new case, does that get your MV up to where you want?
Not building anything just got bored and was looking at some cases next too some grendel cases and the thought hit me. What would the usable case capacity be if the grendel case was stretched out too 1.610.
I already get over 2600 with the 129 ablr with the case like it us now.
Hypitically speaking 2700 to 2750 sounds probably right where the accuracy load would be in this dreamed up case with cci450, h4895 and 129 ablr.