I keep a mag of that Hornady 75 gr TAP around for my SLR106 for home defense situations, it is an awesome round.
As far as your feed issues are concerned, you definitely could have had an older gun that had just sat on a shelf for a while. The old SLR106(prior to the BD prefix) had feed issues directly related to the feed ramp. BD and later run smooth as butter. That would explain why they just switched it out, rather than fixing it.