Noveske 300 AAC BLACKOUT

[Dr.Phil]

Here is an excellent thread that discusses the barrel break in process ad nauseam.
http://www.snipershide.com/forum/ubbthr ... 996&page=1

I have personally used and gotten excellent results from the Tubb FF & TMS products though.

Namely increased velocity & lower pressures and minimal fouling

[300Blk]

Probably makes the bore larger which may lower velocity.

[silentbushmaster]

Dr.Phil the Tubb's system has given me good results also. Had higher velocities and better standard deviations after use. Picks up less fouling and a bit easier to clean. Have had good results with the higher end bore pastes also.

[Dr.Phil]

Probably makes the bore larger which may lower velocity.

In the purest scientific sense, I suppose it does make the bore larger by a miniscule amount as does polishing anything, but the velocity increase is due to a polished bore.
These results are fairly well documented and reviewed.
http://www.davidtubb.com/finalfinish.html
http://www.davidtubb.com/tcom_images/fi ... _sheet.pdf

Whatever your opinion is of David Tubb or Barrel Break in, the product works as advertised.
I've used it on four barrels now with similar results in all cases.
- Increased velocity using same charge weight before & after treatment.
- Minimal fouling in the bore
- Same or better accuracy after treatment

[eyeson247]

This train is starting to go off the tracks..........