I have now fired over 500 pellets through my pistols, a Colt 1911A1, a Walther CP99 and a H+K P30 ( which incidentally comes with a plastic pellet seating tool as standard) and have not had one stoppage since seating my pellets. To say I am pleased would be an understatement. Previously although they have been fun Umarex pistols were always a bit unreliable due to the stoppages and jams. Such a simple solution to such an annoying problem. If only I had known this before lol. Thanks to all those on here who responded. now on the hunt for loads more spare magazines lol.
Alan