Lawnboi
"DADDY"
It might make it. It’s a saami cartridge so plenty available to guesstimate. At reasonable pressure I think you might be able to make it. I know the gt was designed to work in aics mags, but I know some have problems, I’d probably call Hawkins and ask if their flush mags worked.2800-2900 seems easily doable out of a 20” barrel, right? I’m seeing plenty of 3000+ reports with longer barrels. 28-2900 is enough for my needs. I wouldn’t be shooting critters much past 500 ish with this gun, I have others for that.
I know you said you don’t want to but I think a tikka and a short action flush mag would be about perfect for that.
People use Varget and h4350 for it as well which is another plus, on top of alpha brass being available for it.
I wouldn’t expect long barrel life if you push it though.
Or just get a 223….