Question 1. I have a few manuals that's Ive read thoroughly, but I'm on the edge of what I should do. With everything I have, the manuals all call for somewhere around 15 gr. Powder. Would it hurt to start a tad lower because I'm just starting? With all my research Ive learned 2400 is a great mag powder, but works best under hot loads. Would I be better buying lighter bullets and different powder to start?
► All powder burns best near
Max Load. That is the nature of the granulated fuel we call powder.
But, that doesn't mean the bullet is it's most accurate at that pressure.
DO NOT confuse those 2 ideas. Decide whether you are out to break your wrist, or want to hit what you aim at. Those are 2 completely separate investigations.
► When a book gives one load, then that's
Max Load. That is typically reduced by 10% to find the
Starting Load. So for a 15gr
Max, your
Starting would be 13.5gr. Then divide the range of 1.5gr by 5 to get the increments for your loads. So your
suggested incremental loads might be 13.5, 13.8, 14.1, 14.4gr, etc.
► If you're going to buy anything, then the place to start is with a modern reloading manual. Since about year 2000, labs have used more sensitive computers and digital pressure gauges to measure chamber pressures. Since their introduction, some books had to be completely rewritten. For your own safety, you want to work with this new information. You can get new info from the powder maker's web site, but a nice manual is hard to beat. I would suggest the
Lyman #50 in hardback.
► You're also going to need to keep a reloading notebook of your own loads and the results. One load with each powder-bullet combo is going to deliver excellent results. You're going to want to repeat that load in the future.
Question 2. Do you find it easier using the primer arm on a single stage press, or hand priming?
That changes year to year as new products come out. As in baking a cake... there are many ways to accomplish some tasks. It's all up to what you like and what suits your loading process.
Question 3. Because the 3 die set seats and crimps with the same die, would it be smart for me to practice on some blank cases until I get the hang of adjusting for seating/ crimping?
Practice building cartridges with just the case and bullet (no powder, no primer) is always a good thing. Lots of people keep one perfect cartridge around to help set their dies and other useful purposes. You can always "unload" a practice cartridge using a kinetic bullet puller, like this......
https://www.midwayusa.com/product/685703/rcbs-powr-pull-impact-bullet-puller-kit
Question 4. The internet is undecided on whether 2400 and small pistol primers get along well. Apparently her grandpa never had any issues because he seemingly used this combo often.
This is another good reason you need a modern reloading manual.
Thanks in advance. I don't know anybody personally who reloads, and my local gun store employees aren't too talkative unless you're spending money.
Believe me, you
DO NOT want reloading advice from some counter jockey ! Be sure and bounce all reloading advice off a good reloading manual. If the advice runs counter to what the manual says, then forget it. This may come as a shock... but not everything you hear (even on the internet) is true.
Be safe.