303 British case flaring for use with cast bullets

[vmaxaust]

About to try my own cast bullets in 303 cases. The bullets are 174gr and triple Hi-Tech coated. Looking through various die maker sites I found the Lyman neck expanding M dies for 7.65x53mm Argentine Mauser...
https://www.lymanproducts.com/rifle-nec ... ing-m-dies

Can anyone suggest from experience which case flaring dies they use for cast bullets on the 303? This Lyman die looks like it will do the job but would like opinions as to whether I'm correct or if there are better options in seating cast bullets without scraping coating and lead off during seating.

Sam

[eddahenry]

Are you sizing the projectile post coating ? i just use a lee sizing die (.312 for my 7.62x39 and 303) and lee universal expanding die to do my stuff

[vmaxaust]

Are you sizing the projectile post coating ? i just use a lee sizing die (.312 for my 7.62x39 and 303) and lee universal expanding die to do my stuff

Yes, sizing to .312" or .3125" after doing coating. I have automated sizing machine. I will use Lyman die or Lee as you suggest. Thanks.

[in2anity]

Lee