IMO, the answers are yes, and yes.  More specifically, the Metford-style bullet seems to be the most efficient for LR use - this more specifically means the best BC in the velocity range with BP, i.e. transonic use.  Last year I used a Metford PP bullet in my last BPCR midrange match - I was not only suprised at its accuracy, but also at the eficiency - the relatively smaller sight adjustments required when comparing with my 'normal' bullet, even with a lower powder charge.
Just my opinion, of course - and worth whatever you paid for it...