As a probationer at a local club and if successful in my FAC application later this year I will definitely be reloading my own as I think that it completes the circle and understanding of shooting and I have already looked at some of the links on this thread many thanks. I'm a machine tool fitter by trade and would never mix tolerances as in the .223 v 7.62 argument. The one of the things I have learnt from the broad knowledge in the club is only chamber a rifle with the calibre and round it is built for.
Another question is if I have .223 rifle on my Certificate then surely I would not be