I am trying to figure out the various versions of this barrel kit. I have seen the following two scenarios:
1. 2k3 (original, long inserts), 2k4 (shorter inserts), 2k7 (not sure of change), 2012 (claim same as 2007 but better honing process)
2. 2k4 (original, long inserts), 2k7 (shorter inserts), 2012 (claim same as 2007 but better honing process)
I'm leaning towards #2. Please help if you can.
I'd also like to know what bore sizes were available for each version.
My original long insert kit has .684, .686, .688, .690, and .692.
My short insert kit has .680, .684, .686, .688, .690, .692, and .696.
I've used an original kit for a decade now and just picked up a kit with shorter inserts. They are both great kits.
What barrels (kits, two-piece, or one-piece) have bores smaller than .680?