Bill_Rights
Member
This throat and bore polishing system seems to consist of a special cartridge (pack of 20) that you fire in your gun and the bullet itself somehow polishes your bore. Or am I over-simplfying?
Below is one link to it, and I'll try to cut-and-paste as much other info about the system as I can after that.
The questions are, have any of you tried it? Did it work? How do you know it worked? Does it wear out your barrel sooner? (Probably other questions will occur to you....).
BTW, we just recently went through some of these issues on a major thread "Stubborn Copper Fouling" at http://www.thehighroad.org/showpost.php?p=5329998&postcount=1
http://www.midwayusa.com/viewProduct/?productnumber=939874
Here's the copy from the Midway page:
And here's the instructions (at least part of them; the flowchart is a graphic within a PDF and I didn't know how to post it - see the attachment for the full .PDF.)
Below is one link to it, and I'll try to cut-and-paste as much other info about the system as I can after that.
The questions are, have any of you tried it? Did it work? How do you know it worked? Does it wear out your barrel sooner? (Probably other questions will occur to you....).
BTW, we just recently went through some of these issues on a major thread "Stubborn Copper Fouling" at http://www.thehighroad.org/showpost.php?p=5329998&postcount=1
http://www.midwayusa.com/viewProduct/?productnumber=939874
Here's the copy from the Midway page:
"I have experienced much longer accurate life from a barrel using TMS, and much easier cleaning. It's a hard concept to accept for some people, but it's true: the more frequently this product is used the relatively longer the barrel will last." - David Tubb (11 time NRA National High Power Rifle Championship)
As most competition shooters know, barrel erosion is the number one cause for accuracy loss. These bullets are coated with a unique polishing compound that increases barrel life and accuracy at the same time.
Notes:
For instructions on how to use the components of the Tubb Final Finish System, please see Final Finish System Instructions
And here's the instructions (at least part of them; the flowchart is a graphic within a PDF and I didn't know how to post it - see the attachment for the full .PDF.)
Tutorial
Among the factors that affect accuracy and fouling in a barrel, these are very influential:
1. Reamer marks in the the throat area that result from chambering the barrel
2. Dimensional uniformity
3. Tool marks / surface finish
A typical factory barrel will be improved in all three areas, and even hand-lapped barrels need the chamber reamer marks in the throat corrected to perform to their potential.
FinalFinish and FinalFinish TMS will correct/improve all three of the above factors. These products will remove the most damaging (to the bullet) tool marks, generating a surface finish that goes WITH the bullet instead of against it, and work out “tight spots” that disrupt the bullet. It is okay to use FinalFinish in chrome-lined AR15 barrels.
See flowchart on back for process recommendations.
Do not make this simple process more complicated. It is very simple and forgiving and also invariably yields good results. Want to skip 5 shots of the #1 compound? Fine, it will still work and improve your barrel.
Cleaning
Again, do not over-complicate. Get the copper fouling (if any) out. We like Sweet’s 7.62 Solvent with a one caliber oversized brass brush to remove copper (keep the brush wet), or you can use Butch’s Bore Shine or Shooter’s Choice MC7 and let it sit a while.
Loads
We suggest a safe moderate pressure load. For most modern rifle calibers (.30-06, .223, etc.) something around 2200 feet per second is just fine. Typically, the suggested STARTING load in a reloading manual is recommended. Propellant selection is not critical. Please see www.davidtubb.com for loading data if you’re not sure of what to use.
DTAC, LLP / 800 North Second Street / Canadian TX 79014 / 1-806-323-9488 / www.DavidTubb.com