No I do not think so - I understood that you thought the 1/20 might be a great big conical gun but I am not sure of that because lead conicals can develope 'wobble', do to rotating to fast, much easier than a copper lead manufactured bullet.

I am not sure there was a confusion, I believe that the 1/28 could shoot the LONG conicals better than the 1/20 because of over-spin.

I have in the past shot long conicals...50 cal, very well from 1/24 - 1/28 - 1/48 - I have no experience with the faster 1/20 twist rate, but form the reading I have done - I am not sure it would work with a lead conical - but I do not know that.

Correct because the 1/28 or even the 1/24 does not induce over spin or over stabilization with the charges that we shoot heavy conicals with. It is my estimation that a 1/20 would unless you backed way down on the charge...

Here is an clipping of what I am trying to say....

A term we often hear is "over-stabilization" of the bullet. This doesn’t happen. Either a bullet is stable or it isn’t. Too little twist will not stabilize the bullet, while too much twist, with a couple of exceptions, does little harm. Faster than optimum twists tend to exaggerate errors in bullet concentricity and may cause wobble. The faster twist also causes the bullet to spin at higher rpm, which can cause bullet blowup or disintegration because of the high centrifugal forces generated. For example, the .220 Swift, at 4,000 fps., spins the 50-grain bullet at 240,000 rpm.

I think we are talking the same point - but I am disagreeing with the 1/20 concept and a lead conical unless it is awfulwell built....