And what bullet are you using? Lead, plated or FMJ? 95gr or 100gr?
Also what pistol are you shooting them out of - specifically the barrel length?
Don't overthink it.
Just shoot..that is how I learned.
I have shot from .925-.980. I settle on .950. As long as it fits in your pistol, run it.
I won't mention the loads I have shot off the book, but they work.
The list I gave you up the threads, are the loads that worked for me.
I have shot over 500 in the last few days.
My favorite is actually 3.0 SR7625, but you don't have that
I shoot
Lead roundnose 95
extreme 100
Montana gold 95
extreme 115
Of the powders you are shooting, this is what I would do.
2.7-3.1 bullseye .950, and shoot.
3.5-4.0 Power pistol.. .950 and shoot.
3.3-3.7 Unique. 950 shoot..
You will find it.
My best load with those powders was 4.0 Power Pistol I am shooting left handed, and my writing sucks. My right arm is broke. that is why my writing looks weird