IMR 4166 applications in the 6mm ARC
#8
OK, Giving the Tubbs final finish a go & must say early experience is leaving me in doubt. In doubt of what you ask? I do not think this is anything close to what Tubbs was marketing early on with this system.

Where I am going here is my understanding is that this is supposed to be a lapping process or a process to remove material from the bore. More to the point is these bullets seem to be leaving what ill say looks like plastic or teflon coat on the bore.

When I clean the bore I am seeing and removing way more copper than I ever seen in the past. Using a bronze brush along with bore solvents. And what is different now than any time in the distant past Is now I am able to get a look at what is going on in the bore. with a bore cam I am seeing more than I had in the past

As iI get closer to removing all of the copper I am seeing a thin coat of something every where else in the bore that the bronze brush is scraping loose.

Wth the instructions they recomend firing more rounds on a maintenance type basis after this process is done, on what Id consider to be a fairly regular interval. Think I need to reach out to the company and see if what I received is giving their intended results. I look forward to contacting the company to better understand what I should expect from this product? The bore coating is something I was not expecting.

On a side note the rifle seems to be shooting at least as good as ever with these bullets. This is based on ringing steel plates with the 1st through 4th of five series of bullets. Cleaning has been a drawn out chore each step of the process. Worse than ever.
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RE: IMR 4166 applications in the 6mm ARC - by CZ527 Guy - 08-14-2021, 11:15 PM

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