I recently tried out the Sellier Bellot 180 grain (boat tail) ogives for my reloading. They are half the price of the 174 grain SMK's and I wanted something a bit cheaper for practice shoots.
There are a few differences with the SB when compared to the SMK.
The SB are open at the base; which may be an advantage in rifles with worn barrels.
The weight variation is bad; only 9 out of 100 were exactly on the 180 grain weight. Lowest was around 176 grains and high end was 181 grains.
However having weighed out and batched them into groups of equal weight. (I bought 500). They actually perform well. Not quite as good as the SMK, but in view of the price difference; it's good value.