I'm going to offer this advice.
Anyone that is totally new to reloading should start out with a batch of brass that is trimmed or at least sorted to the same length.
After you get a feel for things this won't be so important but crimping always seems to give new folk a fit.
If your brass isn't the same length and you set things up for a short case, then a longer case will get too much. If set up for the longer case then the short ones won't get enough. The difference in just a few thousands, while still in spec, will make a difference. New people chase this all over the place and get hung up a lot.
After you do a few you will get the feel for what is needed and it will be easier but when starting out removing this one thing will limit some frustrations.
My posts are things I have tried or experienced. You may or may not wish to emulate them so read them with this in mind.
Compromise means that both sides give something, but they never give, they just take.
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