I am fairly new to this reloading thing. I have been reloading for my .270. I have had good accuracy from my spitzer, flat based, reloads. I originally purchased SSTs, but could barely keep them on the paper. Tried different powder, but could not improve consitancy. I have also tried some sierra's that have a boat tail, and a couple of barnes. The barnes had the best group, about 2". I know Barnes recomends crimping (though I didn't know that when I loaded the sample bullets). From another post I got the impression that factory loads are crimped. Would crimping my reloads improve the accuracy of the boatails?