mauserand9mm,

Is the projectile with the large lead nose on the right between the 500gr Woodleigh and 400gr PP Woodleigh kind of what your looking for? Under $25 per 50 from memory.
Taipan only makes a limited number of 45cal projectiles ... 300gr FN and a 300gr semi-spitzer. I tried years ago to get him to introduce a cup-core 500gr weight 458" for plinking ... but the mantle of 'cheapest' bigbore pills has now shifted to The BulletFactory in Sydney. I think they're working on a heavier 45cal pill than what's shown below, but I've also requested a jacketed spire point in 325-350gr weight for a future short 458cal wildcat. I use lots of their 308cal 150gr projectiles ($23ish per 100) and have no complaints. Just regular cup and core projectiles suited to our light feral game and practice.

Weight is 405gr and I use them as 'plinkers' in my 458AccRel.
Cheers...
Con