Can anybody provide information regarding the length of the contact area of the Lee Tumble Lube .356 bullets?

I am looking at the 124 grain versions, Truncated Cone vs 2R. The images LOOK like the TC has more engagement.

If you have either of these and are willing, can you take a few measurements and report?

Very highest regards,

-Joe

I have that in a 6 cavity mould Lee #TL-356-124-TC.
Diameter = .356 Weight = 124 grains, depending on lead mixture
Bullet length (after tumbling) = .583"
Contact length = .303" The TC does not engage the rifling.

Thank-you, sir.