FWIW... Reloading, as stated previously, is a manufacturing process. It's also a very detail oriented hobby... pay very close attention to every step along the way to a finished product, for EVERY ROUND YOU BUILD, not just the first one... It's been stated that "we are literally playing with dynamite" and, if you look at it from a broad perspective, we are.
Safety is of the utmost importance, none of us here want to see, or hear, of anyone getting themselves hurt. Unfortunately, there is always someone, somewhere who gets a little complacent in their ways, and have made mistakes, fortunately, so far, since I've been on THR, no-one has been seriously injured (that I am aware of). Most of them are not proud of their mistakes, but are moral enough to come on here and enlighten us to their experiences. Most often, it's something simple. And to these gentleman, I tip my hat, and have the utmost respect for sharing their experience, and their guidance.
Attention to detail is critical... even when typing a forum post. Punctuation, however meaningless in other mediums, is quite important here... I had to read your original post several times before I realized you were using "Power Pistol" powder...
Anytime I sit down with a new load in mind, I get my old data out and go over it to see what I've tried before, what's been good, what's been not-so-good... What components I used, what I have in hand that might not be the same. Whether it's a primer, or a different manufacturer of bullet, or any number of other factors that will put me in a "start from scratch" frame of mind... i.e. start at the lower end of the spectrum, and work up several batches of five or 10 rounds per load. Then it's off to the range to test them... whichever one works best for me, is the one I come hom and make a bunch of.
Load data is out there for a reason... use it, use as many sources as you can, stay safe, and enjoy the hobby for years...
Cheers...