Size .410 bullet to .401..with Lee sizer?

[Maine1]

I'd like to have a 200 grain bullet for the 10mm, but i can't seem to find one, and was thinking of getting the Lee 41 mag moulds and sizing this down. Can this be done? I realize that .9 is quite a stretch...

anybody know of a good 200 grain HP mould for the 10mm?

[runfiverun]

i'd lube it first or you'll lose a lot of your groove.

[sqlbullet]

I managed to run a well lubed 40 S&W case (.424 base diameter) through my lee die. I was inspired after seeing some nice jacketed bullets in the swaging forum.

I gotta think if I can get a .424 diameter brass through there, a .410 lead bullet shouldn't be a huge trick.

If I ever move to a HP design for my 10mm, I will probably get a mold from mountain molds (http://www.mountainmolds.com/) and then send it to hollow-point mold (https://www.hollowpointmold.com/~hollowp2/) for conversion. If you want your finished product to drop a 200 grain mold, talk to Eric at hollow point mold first to find out how many grains oversize to order you mold.

[dakotashooter2]

Your gonna lose your groves on a lee bullet.

I have an .41 cal (.415 with WWs) RCBS that I had HP'd buy buckshot and that I size down to .403 for my 40 S&W. I lose very little groove and they are the most accurate cast bullet I have for the 40. I generally size them on an old lubrisizer within hours of the cast and don't have any problem pushing them through.

[wallenba]

You will wipe out the lube grooves for sure. If you are willing to spend a little extra, go to the Lee Precision website. Somewhere on there, I think in the FAQS, there is a program that you can use to specify a custom mold and they can make one for you.

[wallenba]

Yep just checked Lee Precision. Once there go to FAQ, then custom services, then molds. Would be $126.00 for a two cav or $152.00 for a six.

[Maine1]

Thanks!

[Trey45]

If this helps, RCBS has a 10mm 200gr swc mold.
Part number 82068 10mm-200-SWC

[theperfessor]

Wouldn't recommend Lee for a custom mold right now. Most group buys are running at least 6 - 12 months for custom molds. Don't think a single custom mold would make it through much quicker, but I could be wrong.