Originally Posted by
sabotloader
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They are not in any way attached to the bullet - the bullet just sits on top of the base. All the base does is act as a 'Wad'. You could use a shot card or even a regular wool wad to accomplish almost the same thing. I believe the sub-base provides the best gas seal.....
I was wondering about the wool/felt wad. If the sub base works better, that's what it will be. Only in jest I will say, I'm working on that 5%'er, and I'm almost there.
Originally Posted by
super_hunt54
It's called a sub base (also called a sub bridge). The bullet is seated on top of it. It helps in creating a better gas seal with these harder brass bullets since they don't obturate very much (if at all). I got mine from MMP. I think Midway carries them as well. I tried them under some of my connies and really saw little to no difference in performance but Sabot seems to feel they do help greatly with these brass bullets. I'll be using them to try out my new bloodlines when (if) they ever get here.
Thanks again to both of you for the great info.