Greetings @
Hg1990,
You are on your way on your handloading journey. You have already learnt that 5 shot groups beat 3 shot groups in predicting precision. Yes I realise that you have not shot on paper yet but you have noted the low ES and stable velocity around that 43 grain charge level. I would not get too excited about the appearance of your primers. There are just too many things that produce primers that look like that that are not high pressure. I would be more interested that your velocity is in line with the minimal tested load data I have been able to find. Allowing for your barrel length your pressures are a little under max. Further there are no ejector stamps or swipe marks that would indicate excessive pressure.
You will find your own way in your handloading selecting methods that work for you. These will change as you move along and gain experience. I still learn something new often after close to 50 years loading my own. Enjoy the journey.
Regards Grandpamac.