260AI Criterion Barrel, match or standard chamber?

[alphapygmy]

I'm using a Criterion 260AI with the match chamber. I currently use the barrel on a long action but put a couple rounds in a short centerfeed mag so you can see about how long they run. The shorter round is a 142 SMK .020 off the lands and runs 2.895" the longer is a Berger 140 LR BT .020 off the lands and runs 3.005." My short action centerfeed mags have 3.00" to use so the Berger is a tad too long. Even if it ended up at 3.000" eventually you would end up chasing the lands and have round too long to work. The 123 Lapua Scenar is short enough to work in my mag also, no pic though......

[Trapper458]

Thanks to both of you for your responses. As I will be using the short action with the detachable mag, I've decided to go with the "standard" chamber and see how it works for me....thanks again,
Regards,
Trapper458