thanks for the info river rat i have a half box of shockwaves 200gr and 250grdidnt work along with hornady's and precision dead on bullets etc.i am not going to try to float the barrel til after muzzleloading season is over here in mich i dont want to have to sight in again.i feel rather comfortable the way the platinum 270 powerbelts are shooting and i have 4 bullets and 6 100gr loads left and dont want to drop another $45 until season is done.let me know if you float the barrel on ur apex and how it worked out...good luck