Two tips, if you are able to take the barrel out of your pistol such as for fieldstripping, BEFORE you get to the range, drop each round into the chamber (scientifically known as the plunk test) to make sure that your newly made rounds will fit the chamber of your pistol. Later, you can buy a case gage that does the same thing if you wish.
Second, do not load a full magazine. Load one round. Fire it. Listen for any unusual sounds such a a muffled report or if you feel unusual recoil. Make sure that the target--use a new target at very short range so you can't miss--was hit. Check the brass for any unusual signs of high pressure or other abnormality. If all went well, then load two rounds into the magazine, fire the first while carefully observing and listening for proper function, then fire the second if all is well. Stop and unload the remaining round if anything does not feel or look right after firing the first round.
Semi-autos can sometimes be a bit finicky on feeding because the recoil spring and the design of the firearm may not cycle low pressure rounds correctly resulting in failures to extract and feed. For that reason, load only a few rounds and try them before going whole hog and loading a bunch that will not function your firearm. If you really want to, you can load ten rounds at the lowest recommended grains of powder, load ten more at x+.1 grain, and so on until you get to the max recommended powder load. Not sure how far you are from a range but if you are far, then this saves time to determine what load properly functions your pistol.
These are things that I know from hard experience--did not plunk test my 9mm bullets but did check gage them with a SAAMI spec'ed gage. However, my Sig P6 has a short throat so it does not like certain profile bullets regardless what SAAMI says and so the end result is that I had a lot of 9mm ammo that did not fit my gun's chamber.
Obviously for me, the solution for the problem was that I bought a S&W Third Generation 9mm which eats most anything in order to use the ammo that I made. I could have pulled the bullets (btw, I recommend getting one) but did not look forward to pulling all of those bullets--faster to acquire a new used gun that would eat them. My FIL loaded his 9mm incorrectly one time, and I had to pull about 500 rounds which is not fun.
