I call mine the 7mm ARk.....laid out to work in the AR platform, k for kurz (short) ....shortened slightly to avoid inadvertently chambering a Grendel, not that it would hurt anything, we cross caliber fireform brass for our bench guns all the time....mainly to prevent having a blooper on a critical shot..
I've built (4) ARs and (1) CZ bolt gun so far.....finishing the 5th AR tonight for a range run in the morning and started the 2nd CZ yesterday....All were set up for supersonic....pretty easy to get a 120 Nosler moving over 2,800fps.....good bit of power in a small platform, something around 90% of a 7-08....haven't done any sub-sonic, so can't help you out with load data on that one...
6.8, 7mm, .30 ARk
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I built a sub-sonic 7mm based on shortened SPC brass a while back....the
TAC7, around ~ 7 or 8 grains less capacity than the grendel, don't know if that will help much....
TAC7 line-up
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Threaded Mode