What absolute rubbish,
Abbey Road, it's never magenta on an Airbus...
Think I'd ask ATC if there was any magic in 10 miles. It's slightly ambiguous anyway, IMHO, unless there's some protocol I'm not aware of. And it depends where you are when the instruction is given (e.g., you might be on the downwind leg).
Do you:
a) complete the turn on to the localiser at 10 nm;
b) head directly for the 10-mile final, and then start the turn on to the localiser so as not to shoot through it;
c) self-position so as to give yourself a short intercept leg at, say, a 30-degree angle?
"Is there an accurate way, other than inserting a PBD, to intercept at 10 miles?"
Even that's not strictly accurate (and the distraction is unacceptable). Defining the PBD without forcing an OVHD results in (b). Defining it with an OVHD means you shoot through the LLZ.
I'd probably use ROSE NAV and do my own headings, so would use AP. But check NAV ACCURACY first, or you might overfly the presidential palace like I once did in a third-world country.
