Don,
Not trying to stir the pot here. However, after many conversations with Hi-Tek, he designed or rather created the coating for pistol shooters. Shooters that were aware and very pleased with the pistol results decided to try and push the envelope and see how fast they could go with the coating.
Hi-Tek has never (to my knowledge) advertised this as a pistol or rifle bullet coating. It's a bullet coating plain and simple. What you coat with it is up to you. He has never claimed that it will increase or decrease accuracy of the projectile. Only that it will not effect accuracy of the bullet.
He also simply stated it stops leading and reduces the smoke generated from wax lube.
I think we all know that to shoot MOA you need to run copper jacketed bullets. You want to run sub-moa, at distance, you need to weigh each bullet and group by weight. Then weigh your powder manually. Some guys even group each case by weight, size etc and even have custom tooling made to insure each primer pocket flash hole is centered to to obtain the perfect powder burn.
So I don't think Hi-Tek can be blamed at all for less than 1 or 2 moa.
Just my .02 worth