How are you raising the recoil pad up?I will second a vote for factory tikka mags, unless you have a really good reason to go aics. My Tikkas have spent a lot of time in KRG Bravo chassis' with aics mags and now they're back in the factory stocks with factory mags. The feeding is just so good, and if you raise the buttpad up an inch or so and get the vertical grip module, you're in high cotton regarding recoil control without the cost or weight of a chassis. I say just check that the "long action mag" internal length will accept your cartridge and get an appropriate bolt stop and rock on.