I fashioned a rear sight on a old 20g with gray epoxy putty. Files to shape easy and has been solid for 20+ years. Give it enough surface to bond it should work for really cheap.
I have Kilroy screened on the left chest of most of my shirts. I am not having a Bad day, I'm not freezing in a foxhole, bombs are not dropping, food in the store.... Not a bad day at all.
Many years I have been on an off on getting a 460.
It seems I don't spend enough time with what I already have..... to add more would distract me further.
** You may want to look at Berry's copper clad for a plinking round. For me hard cast seems to fade groups. [leads a bit] past 1000fps.
I use the Lee Collet crimp on about everything I load, it easily lets me control the holding power, Most of mine do well with a 1/4 to 1/3 turn on setup.
Thermometer, infrared non contact.. Ammo temp as well as barrel temp [barrel seems less sensitive]
Depending on the game you play, hunting...
Be realistic if yours is "Picked range brass or brass in the box... Or cleaned and polished...
Discount a couple bucks if you want it gone... If you have lapua / norma etc... that is a premium.