Don't bother with an A7 - if you are tossing up between the two. Especially if you are thinking of bedding either of the two. The T3 is far simpler, and you'll get a better result in any accurizing process and encounter the same drawbacks (e.g mag length seating of projectiles).
I've been following Nathan's work at
Extensive Field-Tested Rifle & Cartridge Research - BallisticStudies.com for some time now and he's right on the money. Only Issue I've encountered with the T3 has been related to the Suppressor I've used heating up the lite barrel like a frying-pan with 3 shots in reasonably quick succession, still shoots about .5-7 on a good day. Suggest if you do it in a magnum cal (like mine 7mm Rem mag) get a Terminator brake to match, and you've got a light rifle and sorted for the High country...
Take a wee mosey over top his site and take a look - 5 books later I'm a convert! BTW the only person who can make you feel bad about your choice of manufacturer is yourself - or maybe @
Gibo :XD: