Hey guys, I'm new to the world of custom rifles and have a few questions for those more experienced. I've wanted a 25-06 for years as the round has intrigued me for a long time. I've also always been intrigued by the work of P. O. Ackley and always thought it would be neat to have an AI rifle so I'm killing 2 bird with 1 stone and building a Tikka t3 in 25-06 AI. With the new blackjack 131 ace I'm looking to do a 1-7.5" twist barrel in a magnum profile or a heavy magnum fluted barrel (same weight after fluting). The question I have is regarding the reamer. Miles from black jack has stated that anything between 0.130-0.170" free bore should be fine. When ordering a reamer from PTG they ask you to specify how much free bore you want them to build the reamer for. Given that how much free bore do you guys feel would be optimum for this rifle. I'm also open to input on how many grooves I should get the rifling done in and why? Also, is it worth the $200 or so to get the heavy magnum barrel fluted vs just going with the standard magnum profile? My overall plan for the rifle is to get the action trued, get a JC Custom barrel (I have one on a target 260 and it's fantastic plus I'm Canadian and like supporting local when I can), bed it in a greyboe Terrain stock with an AICS style bottom metal and a Leupold VX-5 3-15 optic with CDS. This will primarily be a hunting rifle that I will also use to practice long range target shooting as far as I am able to find. Any input is appreciated, I've been following the forums on this site for a few years now and have found a lot of useful and interesting information here.