Yep , I to use a 1-8 in a 243Ai shoots the 107 SMK and 105 A-max great. The only thing is that when I run the lighter bullets out at full speed some will blow up due to the high rpm
I thought about the next barrel being a 1-7 so I could shoot the 115gr Berger VLD's with a BC of almost .6 they should be able to buck the wind realy well.
The 1-8 shoots the 105gr Berger VLD's pretty good so long as you keep the speed down , i have to run them about 200fps slower than the SMK or A-max's