I was interested to see if paying for premium match grade pellets was value for money in my match pistols. So I rigged up a temporary clamp rest at 10 Metres (33ft) and tried various pellets. The answer is, in my Morini 162ie the cheap RWS Hobby pellets performed just about as well the R10 premium grade pellets. I now know that those 7's are nothing to do with the pellets or the pistol - can't imagine where the fault lies.
5 shots, outside to outside, 8.4mm
And 5 rapid fire shots in my Aeron B96 with the same pellet.