Thanks for the replies.

I use a an rcbs powder thrower which seems to be very consistent.

I also use a Lee factory crimp die, rather than seating and crimping in one go. I read somewhere that this method works well; it certainly works for me so far. I’ve had cloverleaf groupings at 25 metres, rested.

I have Unique, GM3 and RS12, so looking to see which one is the best for my role and loads