Jack all in all those bullets don't look bad. The bullet on the far right is obviously frosted, keep in mind the longer the lead is melted and the lower the level in the pot the hotter the alloy will get.
It's hard to tell from the picture but it looks like you might have some inclusions in the melt, a bit more skimming and fluxing might help.
Keep your cadence at a pace that the mould blocks don't get to hot,slow and steady will produce more good bullets than fast and irratic.
The #1 best thing you can do to even up your bullets is to get one of the locking mould handles from Cabine Tree products, either order direct or get from Buffalo Arms.