Well done Mick, nice pigs and the Rigby looks very nice, good to see that you are happy with it. 7x57 seems to be your new favorite cartridge and with good reason. Incidentally the 338-06 is Geoff McDonald owner of Woodleigh bullets favorite cartridge for deer and pigs etc. Have you tried any Woodleigh 160 grain PPSN in your 7x57's, would be interested to hear what you think.
Hornady make brass headstamped with 275 Rigby of the shelf.

Matt.