There you go, a decent platform, scope of known quality, married with solid mounts and rings,time tested loads with forgiving bulletsand a bit of guidance in how to steer it. Not surprising it works, there isn't any shortcuts or real guesswork involved.
When they get them home and start in load developement, and the inevitable bedding and trigger job they will work even better.
Okay I just finished reading every post and what many of you aren't getting that I believe the OP was meaning is: when you state like the above ^ decent platform, scope of known quality, solid mounts/rings, tested loads with forgiving bullets and a bit of guidance in how to shoot... = not surprising it works and there is any shortcuts or real guesswork involved??? WTF!
So yeah have somebody who actually knows very well what to do and have them choose the rifle, optics,mount/rings plus ammo. and then have them work out the load parameters and it's easy peasy. No sh*t sherlock, but try and do all that on your own with only say a .22 rifle max. 100yd. plinking and sighting in year deer rifle at 200Yds. once a year shooting history and it's not so easy at all; not even close.
I've been shooting or have seen many shooters at the range struggling to hit paper at 100Yds. to 300Yds. and it's definitely not there first time at the range.
Are you kidding me? While many here have stated good information, shooters needing to read up to gain the knowledge, put in the time and effort at the range then they will be rewarded with some chance of shooting LR solo.
Let's not forget a few thousand dollars for basic set-up (i.e. $1,000+ rifle & $1,000+ scope, $600 range finder & $1,000+/-spotting scope) plus a couple thousand dollars of match grade ammo. to practice with in the first year alone.
Then and only then are you going to have any luck of hitting a reasonably sized target at ranges exceeding 800Yds. to 1,000Yds. on even sporadic basis
if you have some talent with your nerves/eyesight and judging the winds...
Please do not think I'm trying to disrespect anyone here, it's just that many experts (in any sport/hobby) can become a little complacent on how difficult it was in the beginning of their own shooting career. Particularly if they were not given the opportunity to have an (expert) coach set-up the rifle, scope, ammo. etc. and coach them through all the aspects of making a such difficult long range which a 1,000Yd. shot is.
Many rifles may or not be MOA, however it will take many, many rounds of practice to determine if the rifle you've chosen is capable of MOA with yourself at the trigger (especially at these greeter distances where wind is such a factor). This expertise can only come with time if your not getting expert help. Something that everyone one of these posts had in common (that being the posts showing great success while using assistance of an expert to do).
Cheers D