I just think that cost wise makes it not worth doing. True that the lil divets WOULD increase their stability, but at the cost of BB's I doubt it would be worth while for anyone other than people with a single shot sniper rifle.
Besides the only way that these could be made to any "precision" is in the moulding, which would require detailed modifications to the moulds themselves. Which is also very costly.
"The hydrogen economy car from the people who brought you the 'Hindenburg
'" - Glen Foster
Condoms do not guarantee safe sex any more. A friend of mine wore one and was shot by the woman's husband!