RE: practise at what ranges
I practice at ALL ranges, I own a 1200yrd range, and have used every inch of it on MANY occasions. With my hunting rifles, the accuracy is usually poor enough that I can' t shoot well enough at the full length, usually only out to 800yrds with my ' hunting' rifles. Some of these rifles I have data collected for ranges in 10yrd increments for the entire length of the range (plus several 5yrd increments such as those at 20-25-30yrds, 70-75-80yrds etc). You only know where your bullet is AFTER you' ve actually seen where it hits at varying ranges. When I just started seriously shooting, my family taught me to shoot at at least every 50yrds for the length of what you would hunt, plus at least another 100yrds, that way you' re surely covered, now, I know that that is the MINIMUM you should practice...at least every 25yrds, every 10yrds is better in my book, in just a hunting rifle, target or varmint rifles are another story.