Well cleaned and shot my 20 dollar rifle again today (Springfield 187R) and found out some interesting quirks. Highspeed Longrifles ( Federal HP bulk) would jam about every other shot a lot of the time or it would work some of the time and then jam. I did have it double a couple of times and jam. I tried some Highspeed shorts in it and they worked great semi auto I could fill up the tube (22 shots ) and empty the tube any way I shot it slow or as fast as I could pull the trigger and not a jam not one through a full box of shorts. So if your Savage 6 or Springfield 187 or Stevens 87 jams and does not like long rifles give the shorts a try. I am also going to try the Aquila SSS in them and see how they work not sure if it is the short case or overall short length. The SSS is as long as a LR so maybe it will not work, but I am going to try them will post resulsts when I do. Jim