I dial very quickly. I pretty much flick the turret and it lands on the number. I don't always clean the stage every time. I only shot 2 stages that required close to that much dialing last season, that I remember. Both were 10 shot stages and 90 seconds. I had time to spare on both. Both were prone from one position. One was 400, 600, 400, 700, 400, 800, 400, 900, 400, 1000. I got a 9 on that one. I missed the 900 yard target. The other was from 300 to 700 in 100 yard increments one shot each and then start over at 300 and do it again. Before that stage people were asking me how I was going to shoot, and no one thought I could dial without timing out. No one else in my squad dialed. Everyone held. I shot last and I dialed and finished with 12 or 13 seconds left. I did clean that one.
The Rifles Only stage is equivalent to 12 shots in 90 seconds with a target transition on every shot. I would definitely have to rush the last shot on that, I am certain. Also, it would depend on if you start prone or build the prone position on the clock. If I start prone ( no movement) I would probably have to rush the last shot. If I had to build a prone position on the clock it would be a lot more rushed. I could probably break 7 good shots though and MAYBE the eighth at time. I would likely have to rush shot 8. Also, 1 min for 8 is less time/shots to make up for taking a little extra time on the first shot to hone in on a wind call than 90 sec. for 12.
If the COF requires multiple positions there is no way I could dial that much and make the time. Whenever there is movement involved, even a little, with that many target transitions, I have to hold over or I will time out. I do not shoot nearly as well with hold overs especially if the targets are not generous. Also, we would need to compare target sizes for the above stages as well. The precision level of sight picture required for a 2 moa targe vs a 1 moa target is drastically different. Also, the stigma of that stage with only one person ever cleaning it during a match would mind fuck me. I would likely have a stupid fundamental issue that would cause a miss. If it was just a fast stage in some bumfuk local match the mental part would be much different. The other part of that stage is the name. I am not familiar with that stage as I have not shot at rifles only ( I hope to soon) but the stages where I have been successful have pretty easy to memorize target sequences. It sounds like the target sequence that Jacob came up with might not be as easy and would require some extra thinking or notes. Either/both of those would eat time.
I guess what I am saying is that the reverse frustration ladder at rifles only would seem to be more difficult in several subtle ways than the stages I have had success on with a lot of dialing. I will say that it seems hard, but not impossible to clean. It sounds like a good stage to practice for a few sessions to improve speed. I would bet if the stage is in match after match there, eventually people will become accustomed to it and clean it more regularly.