I finally got around to loading my third rifle for cast boolits today. Its my marlin 336 chambered in 35 Remington. I used a fired case and candled a cast lee 200 grain lee boolit to check my max aol length. I checked it 11 times since the cast boolit fit tight in my case and kept getting stuck in the chamber. The lowest reading i received was 2.353". I the last 7 readings were from 2.358" down to 2.353". I loaded up three dummy rounds at 2.350"and cycled them perfectly through my gun. I did notice that i could barely see the micro groove land marks on all my boolits. So i made more dummy rounds all the way down to way to 2.320" and still could see the micro groove lands marks on my boolits after test cycling them. I made the executive decision to load them at 3.350". Is this common to see the micro groove land marks even loaded as short as i did? I don't want to create pressure spikes. The other issue i had was the rcbs seater die cut rings in my boolits when seating them. Is there a pistol die flat base seater i can switch out my die with?