When I purchased my 95K from SFS Tony took me upstairs to see what pellets the rifle liked. First ones he tried were the H&N FTT in 5,53 and reported back its nearly pellet on pellet. So I purchased two tins there and then.
When I went back a month later to have the power of the rifle adjusted as it had crept up we went back on the range and tony said he would try some AA fields at 5,52. The pellets given the lesser size just fall into the chamber where as the 5,53 H&N were a very tight fit.
Remarkably tony said the group was tighter with the AA's and the rifle sounded smooth