Do coated bullets have any drawbacks?? What comes to mind is the 'moly' bullet fad that died out for several reasons. One being that if you decided to shoot moly bullets, you could ONLY shoot moly bullets. People also said it took more powder to get the same velocity as conventionally lubed bullets.
Every pc'd bullet I've shot so far has had more/higher velocity than their traditional lubed counterpart in the same firearm, same cases, primers, powder charge, crimp. Perhaps the hi-tec coated bullets are different? I'm using the dry powder powder coat method with nothing more than a plastic bowl with air soft bb's in it and shaking them to get the pc coating before baking them.
The way the moly was used was a huge mistake!!!! The bullets should of never been coated. Moly is at it's best when it's used as it's intended, in the pores of the metal. I've used moly over the years to treat trigger groups, bolts and barrels.
Do some trigger work (spring change, polishing, etc) and try the trigger. Then moly treat all the moving parts, huge difference.
Polish the internals of a bolt some time & then moly treat the bolt body/fp & striker spring, it's amazing how much it cuts the lock time down along with having a more consistent stronger fp hit that can easily be proven with a chronograph.
The most important part of a bbl or cylinder is the leade of the chamber or where the bullet starts in revolver cylinders. Excessive heat & lead/carbon buildup in those areas destroys accuracy. Treat that area only with moly and it will:
Cut down on accuracy destroying fouling
Cut down on accuracy destroying heat
Moly isn't a bad thing, it just shouldn't be on bullets.
As far as coated bullets, I really like them. No smoke, no lead, no hard alloys or any alloy issues with the pressure/speeds of the bullet. The heating process in making the coated bullets anneals the alloys making them soft. They expand/seal the cylinders/barrels better/easier than their rock hard counterparts but the coating protects everything from leading. Clean guns, clean barrels, higher velocities for the same load/bullet and just as accurate but for a longer period of time (less accuracy destroying fouling).