I like what @Quintus is shooting in those 155's. I shoot the 168 classic h and 168 eld-m out of mine with good results. Lapua brass, Varget and BR2 primers. Mine is also a 20 inch barrel and I always wanted a hint more velocity so I switched to the 151 Hammer's. Since you're trying to use up what ya got, I'd lean towards the 168 classic hunters.