I have a CBI and I can't speak for the MK or the A-Max since I have not picked any up yet (on my to-do list). I did load some 100gr Sierra Spitzers and had an OAL of 2.250 and I was not jamming in the lands. Best measurement I got was that length was about .050 off the lands.
Don't know if that helps or not but there it is.
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