Yes, it's a very deep cavity - I once filed the meplat off a bullet and put a straightened-out paper clip down inside. The lead core starts a long way down.
As to being characteristic of the breed, IME every Scenar is a fresh sheet of paper job. No other .308 Scenar / Scenar-L has anything as good as the 155's G7 0.988 form factor - the others are all well over 1.000 including the newest members, the 175 and 220gn L types which appear to be more 'tactical' types than long-range F-Class or similar. Most calibres seem to have one, occasionally two, low drag / high BC models for long-range shooters and the rest are different, usually higher drag. Never figured Lapua's bullet design philosophy out, to be honest. Lapua must be one of the very few manufacturers which still produces 30-cal match quality FMJBTs, in the form of the B-series Lock-Base models and the legendary D-series, the 185gn D46 being the great, great grandchild of early boat-tail Lapuas designed for and loaded into Finnish 7.62X53R machine-gun ammunition for extreme long range firing, starting sometime back in the 1920s
Very, very well made / consistent models though. Over the years, I've used the 155 308, 123 and 139 6.5mm, 105 6mm, and 181gn 7mm 'L' with good results and complete satisfaction at long range and I still have a few boxes of D46 308 185s in my cupboards.
To illustrate the designers' addiction to Heinz 52 varieties, let's look at the 6.5s which the Scandinavians specialise in having been designing and making them from about 1894 or so. Although not as high a BC as some 140-143gn competitors, the antediluvian 139gn Scenar is a super long-range bullet and still very popular among experienced shooters in the UK in all 6.5 cartridges. The much younger 123gn Scenar in the calibre is another great design especially for the smaller 6.5s and a very capable 1,000 yard performer in the little 6.5X47 Lapua. Yet, the still newer 120gn Scenar-L is a relatively high drag model, albeit a great choice for short-range and the fairly recently introduced 136 'L' has almost the same form factor as its 139gn grandsire - so no external ballistics progress in a generation or more, unlike Berger which simply keeps pushing the drag envelope. I doubt if the putting production quality ahead of raw BC value does Lapua any great commercial favours these days as the market is now in thrall to BC alone.
