a good shooting jacket helped, a lot,
a good spotting scope helped , a bit,
a few good books helped immensely, (Jim Owen's book, Tubb's high power, Zedikers Mouse that roared)
best of all was time on the range, and a few good mentors to help out,
but all that only helps if you concentrate and pay attention to what is going on, what you are reading, and what you are told, and work (practice) so that info works for you