My Bear Kodiak Mag stacks like a brick wall past 28".
Yep, I've shot a few different kodiak mags and they do hit a wall just past 28", but that's also a very short bow design at 52" AMO.
I asked Craig from HH one time (mainly because of BF comments) what I'd loose other then poundage if I used a HH bow measured at 30" at 29". He said nothing.
He'sright.