To answer your questions would take a lot of writing. Most reloading manuals cover OAL (COAL) and I would suggest reading any of the popular manuals.
Changing seating depth changes available case capacity which changes pressure which changes velocity. Changing seating depth varies how much...
After using my new Lyman 1200 DPS for 2 months now - I am sold. Like someone said, you can seat a bullet while the next load is dispensing, so no wasted time. It is definitely the way to go if you are loading 20 or more.
My only dislike is the time it takes to change powders. So if I am...
According to the Lyman manual, moly reduces pressure 3 percent while reducing velocity 1 to 2 percent. So, for a given pressure, moly increases velocity.
IMHO, if you are planning on putting in excess of 1000 rounds thru a barrel, use moly.
I fill a small cooler hlaf full of ice, then add water until its almost to the top of the ice. Then place a hand towel on top of the ice. In Arizona where it is so dry, the damp towel rubbed over the barrel along with evaporation cools the barrel down quickly.
I also made a 6 rifle stand out...
I ended up buying a 12 BVSS Savage in 22-250. I'm moly coating NBT 55s and getting 3900 fps. Here are some groups with less than 100 rounds thru the gun. Trigger was 2 pounds OUT OF THE BOX.
Thanks Rem Man.
I'm definitely leaning toward the Lyman model. A guy over on WSSMzone said the RCBS Chargemaster was much faster, but I have some gift certificates to use up at Cabelas and the RCBS model is $80 more than the Lyman there. :?: