I get the point of the video that excessive break in steps are practiced by some and swear that it improves the performance of the rifle/barrel, and as mentioned if there are tooling marks, burrs, etc. in the bore a 'scrubbing" with JB compound may well help in that area. High quality barrels are usually burnished/polished to take care of that issue and would require little if any so called break in operation. Hesitant to suggest Sweets 7.62 for many do not follow instructions and over do it, but it will reveal any copper by showing up very dark blue on patch. If the barrel does leave copper wash in the bore you will know it by sheer visual inspection in strong light down the muzzle(rifle in SAFE mode of course) and it can be cleaned out. As for throwing a rifle down on the ground with scope can't imagine what my Dad would have done to me if I even dropped a rifle, he could be harsh at times(I of course needed that at times.) When rifles of yesteryear had less quality made barrels compared to today a break in was considered as necessary, but your rifle was not a low cost one and should be good to go out of the box in my opinion.
Also as mentioned, there is no good reason to routinely take the rifle down, inspect all the parts, put it back together, two weeks later repeat, etc., etc. It only defeats the quality of performance, load it, shoot it, apply small amounts of grease where needed, clean the bore and enjoy it. Many bores are damaged by over cleaning and unless you are in the tropics with high humidity, salt air, etc. the rifle will take care of itself with minimal attention, they are not a high maintenance item in normal conditions. Just a suggestion.
