Save your brass, get a neck sizing die, research load data on the internet, and cross-reference the data. Find someone that has the right reloading equipment and some components. Then learn to reload your own. I can teach. I can't do reload for you too much liability to load for someone else...
seems like you might not be able to tell to much difference between 65 yards and 100 yards if the rounds impact within .50 moa. What you get center to center x 2 would get you close to moa at 100 yards. Look at snippet. Zero range is 65 yards and the target range is 100 yards it shows that...
It would seem that the same method used for storing primers in their original packaging would work for the storage of pre-primed. The problem may be more in the primer manufacturer as the thickness of the material varies and as long as you can hold certain processes to a set procedure you can...
Stick with the min to mid charge of powder, observe how the crimp impacts your reloads performance. Write it down. Change variables write them down. After more experience, some variables will transfer to other caliber reloads.
700X is most of the time at a decent price for 1,4, and 8 lbs. It can do what the other powders can do based on the typical reloading manual, or google your pistol bullet and cross reference with reloading manual. Great accuracy at a good price and you can shoot a lot due to the small amount...