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Guys.... what is the cannelure there FOR? Certainly not for looks.
I'm assuming this plated bullet is not a hollow-base bullet? The reason you could load the hb bullets flush with the mouth is because of the hollow base. It effectively added to the case volume. If you load a solid base bullet to the same depth as the hollow based ones, you are effectively decreasing the case volume.
I go back to my earlier statement, if you load a solid based wadcutter to the same depth as any other solid based bullet, you should be able to use similar powder charges.. as long as bullet weight is similar. Being that wadcutters are usually lighter than similar swc bullets, the same powder charges should actually be a little on the light side.
Using powder charges developed for hbwc bullets on solid wadcutters is probably a little dicey, and should be well thought out, and approached with educated caution.
Heavier charges were not used on hbwc bullets to avoid blowing the "skirt" off the base when the bullet exited the barrel, due to excessive pressure.
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