My guess is tha the SSII doesn't open up as fast as the SSI.
Tony
That aint a guess, the s2 is an Aframe with a plastic tip, lots of guys like that, i dont..if i wanted absolute weight retention i'd shoot mono's exclusively,they've the corner on that market.
I thought the S1 wasnt bonded, and the S2 is, but you probly have it right,i really cant remember. just know i much prefer the older bullet.