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Why am I being negative.?

Because with no COL or other emperical data then IMHO publishing loading data for a projectile so out of the normal weight range is irisponsible.
As I said I know you have the normal warning, but this again IMHO, is not enough for a projectile that if loaded to normal COL will serverly impinge on powder space and lead the unweary/inexperienced to look to faster powders or great compression to restore velocity with a potential huge increase in pressure. The 458WM is a shit case to do this with it barely has enough powder space as it is and alegidly never makes origional published velocities.
According to german proof practices a 10% increase in bullet weight will give a 30% increase in pressure for the same load. Yours is 44% over standard,. So for the silly this is a hand grenade.

Many posters here will not publish loads that are out of the envelope or beyond factory/SAMMI/CIP max, although they may use them personally.

I shoot amoungst other things a custom 6mm BR in a Ruger #1 action. My loads are way over max, but I built it myself, and tested it myself, the barrel is brand new, the chamber cut with a custom Kiff reamer and has as close to practical zero headspace.. But I would not publish them or advocate them.

Now your loads may be used in a ex military 90 year old small ring Mauser conversion by some 20 year old kid who picked it and an old press and dies up at a gun fair looking for the biggest bang for his bucks to impress his friends. Now does that as an engineer ( which you clearly must be to cut such nice moulds) make you feel comftable?

I happen to disagree with the super heavy lead bullet thing, because it has been my experience ( I shoot for the national team and clock up more than 30,000 rounds a year on ranges) that most people cannot shoot for shit with fairly mild mid range rifles/calibers let alone big stuff and would be better with a 8mm or 30-06 and some practice.
I think that somebody will take a load like this someday, think it substitutes for a FMJ solid and get themselves and or a PH/tracker stomped. It was decided long ago that a lead bullet soft enough to be reliable could not be driven at great enough velocity (unless paper patched). And one hard enough to make the velocity is frangable in large game.
So I see little point except for blowing up water jugs ( which is reason enough if you like that).

Hell Sir it is no business of mine what you or your friends want to shoot. There is a thread here for " 12 guage from hell" which is well out of the box. The difference is that they are individuals having a ball and posting about it. You are selling bullets.

That IMHO puts a greater onus on you for responsible behaviour.

Regards

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