Bula,
Hardcast can never be too hard my friend.....
Sizing is everything, mainly so, and even more important with very hardcast bullets.
fecmech hit the nail on the head with that post.....
I think in your post you realized the problem when you stated the bullets were bevel based, then stated about using flat based bullets......at least it seemed that way when I read it.
The only reason why you see bevel based bullets sold by commercial caster's is because they drop cleanly and easily from the moulds during the auto casting process.
Bullets with square bases don't do so as easily, slowing down casting rates by a lot.
Check with "Creeker" (LAH) on this site, who ran a successful casting business for many years on what I said. Many times, he had stated that he had to hand cast specific types of bullets for customers that wanted square based "Keith type" bullets. He offered a choice, which many cast bullet shooters appreciated.
These tapered "boattail" type bases are good for long range rifle rounds, but they don't lend themselves to cast bullets well at all.
Even with proper sizing, these bullet bases, as the powder is fired beneath them, softens, and due to the angle they have, directs the molten particles directly to the bore walls.
With flat plainbase bullets, everything is at right angles, and not blasted directly at the walls during ignition.
Sizing is, and should be the paramount concern, but the bevel base is far more a benefit for the caster, than for the purchaser/shooter.
You'll read claims of easier reloading, especially in progressive presses and all, but although they might seat a little easier, and with slightly less belling of the case mouth, the difference is minimal, and when fired in the gun, there is no benefit, which in essence, is where it counts.
Take care,
Bob
