I have to admit I’ve never been a believer in the “too slick lube” idea. It has never seemed logical for more than one reason.
It is said that the pressure pushing the ball builds to a lower peak if the lube is slicker than if it isn’t. The idea is that the friction of the lubed patch against the bore resists the ball starting to move, and that a slicker lube will allow it to start moving quicker, to sort of squirt out of the barrel before maximum pressure is achieved, so that it causes lower muzzle velocities. I’ve always thought that the proportion of resistance to movement contributed by friction is tiny when compared to that of inertia of the ball itself, but I don’t know how to figure that. It’s beside the point, anyway. For the sake of argument, say that it’s true, that reduced friction of a slicker lube causes lower pressure and therefore lower muzzle velocity...so what? So long as velocities are consistent, it matters not a fig if they are a little higher or lower. Consistent velocity equates to consistent accuracy. The simple fact that one lube reduces friction more than another would not in any way cause it to be less accurate of itself. If you used either lube for all the shots, it’s velocity would be consistent because it’s lubricity and pressure would be consistent, and so it’s accuracy would be consistent.
Many years ago this same discussion was raging in the online BP groups and people were saying “too slick lubes” were the bane of all good shooting, never to be tolerated. At the same time, the high-end target shooters were all agog over a wonderful new patching material, teflon, which worked so well because it reduced friction so well. Our shooting may, if we are very lucky, be consistent, but we certainly aren’t, almost certainly will never be.
I see the same thing all the time in discussions of the weight of balls. Although extremely minor, there are changes in trajectory from slightly changing the weight of balls. But, if you sort them into groups of balls within a narrow range of weights, the actual weight has no bearing on accuracy. As long as all balls weigh the same, whatever that may be, accuracy will not be interfered with. It’s only of you shoot balls of significantly different weights at the same target that you might see a difference. Neither lighter nor heavier balls are more accurate than the other.
And so, even if the idea that "too slick lubes" make balls squirt out at lower velocity is true, which I’m not convinced of, I believe neither slicker nor less slick lubes are inherently more or less accurate. So, "too slick lubes" are a non-problem.
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