I've come to the conclusion.17HMR is a fad, otherwise the manufacturers (I've a Browning T-Bolt) would sort the ammunition issue and Browning would import the correct mounts. I'm sure others will have different opinions, but I now feel the 'average' UK shooter needs only four calibers / rifles:
12g Section 1 shotgun: Covers: Vermin & Practical / Target.
.22lr: Covers: Vermin out to 80 yards / Target.
.223: Covers: Fox / Vermin / Target. (ease of aquiring ammunition).
.308: Covers: Everything else: Deer / Boar / Target.
Sure, Hornet is a nice found, .303 is fun, we all want .338 & .50 BMG, .270 & .243 have their place. But I did say the 'average' shooter (average budget, average time etc.…)