I have to agree with Timberhunter. Except for competitive shooting, if you can even tease-out real data, that would be tough. Remember the Capitalist ocean in which we swim and the incentives therein. The force that brought forth all these wonderful advances and contraptions also has it's own interest in getting your money (and screen time and clicks) I'm a fisherman, and maybe worst of all, a FLYfisherman, which means there is a fair probability that I tie my own flies (I do) As I have gained in-the-field experience over these years, I have found that there are MANY products that produce NO significant, identifiable or defensible increases in performance: magic this, special that, machined aluminum instead of cast, $400 fly reels to basically hold coils of line and to retrieve fish that very, very rarely go over 2 pounds. Somethings do make a difference, some don't, many, you just can't tell. (colors of soft plastic baits for bass... some pros use like 3 max) But if you buy everything, the only one who loses it you (your $$$)
So there will ALWAYS be some product to sell, some procedure that requires it, and someone promoting that procedure, even if it is a small thing like graphite. I, and others like me from the past to the present, did the basics of reloading to get really good "sub MOA" accuracy (I only quote that because it is such a selling point. HEY, MY G I Joe guy has the Kung-Fu grip!!) AND this rifle says "sub-MOA!!) I expect your context is quite advanced, but if a less experienced person happens to read this, I don't want them to get spooked-off of reloading by the immense minutia possible in it. Until recently, no one in my family of relaoders EVER had a media cleaner, and our Reminton 660's, 700's (ADL and BDL) and A-Bolts shot great groups. Use the same brass shot the same # of times (this is even iffy), Watch your case dimensions. Watch your headspace, Find an opitmal bullet seating depth using the Hornady kit. I think every reloading manual has pretty much full reloading instructions in its introduction.