Tenmilephenom
Nice shooten! Hope you really enjoyed yourself... it is just a ton of fun for me...
I think you might find out that you BD will shoot a ton of different bullets and shoot 'em well. You have only begun...
Just wondering, I am kinda surprised that some of you groups opened a bit after the first group. Were you patching or swabbing beteen shots? If you were using a damp patch what were you using?
I guess I am a little surprised the PB's open up in your shooting - they are usually a fairly accurate bullet, at least I can say one good thing about them.
Your first group you called TC Mag sabots... were the bullet Hornady's or did you use another bullet in a TC mag sabot. The TC mag sabot is an MMP HPH-24 sabot. If they went down the barrel with kind of a snug feeling I can understand why your group migh open a bit with the crush ribs - you were probably leaking some gas by the looser fitting crush ribs...
Most TC's are pretty decent shooter right out of the box. I am not a real BD fan becase of ho dirty the bolt/hammer area gets with blow back but sure can not complain about their barrels and their accuracy. If you want a good hunting gun that will do the job you got one... now just take care of it so it can work for you.
Keep experimenting...