Newbie help, casting for rifle

[sallen67]

I'm interested in starting to cast bullets for my .300 Blackout. (I have never don any casting before)
I have always reloaded lead for my pistols, and never had any concerns, all of the bullets I used were commercial products.

But now I'm thinking that I would like to start learning this skill.
My question and concerns are.
1. Do I have to worry about leading when shooting these through an AR platform rifle?
2. Is there anything I can do to reduce this possibility.
3. I have heard that the subsonic rounds produce less of this leading possibility, but they won't cycle consistently in my rifle. I don't have a suppressor and can't get one in my state.
4. Any recommendations for a bullet mold that produces good results in the .300 Blackout
5. Does anyone have load data they would be willing to share that they use with this caliber?

Thanks for any help you can provide

[runfiverun]

1 no
2 yes
3 bull
welcome to the board.

http://castboolits.gunloads.com/showthread.php?195381-300-blackout-cast-bullet-loads-for-ar-15
some ideas here

[sallen67]

Thanks!

[dbosman]

Welcome. Ditto what runfiverun said.

Personally, I rarely share load data online. A typo or cut and paste error could mean problems. Reloading manuals are available from every powder manufacturer, for free. Many are on line. They list tested loads that are within SAMMI specifications.
Others may feel differently, and often do. ;-)
Here is the J-word loading data from Accurate.
http://www.accuratepowder.com/wp-content/uploads/2010/09/300_ACC_Blackout_Data.pdf

Here is a thread on this forum.
http://castboolits.gunloads.com/showthread.php?171710-300-Blackout-cast-load-data

There is, if you're interested, a http://www.300blktalk.com/forum/ dedicated to your choice. I expect you'll get the best cast boolit advice here though.

[sallen67]

Yeah I was referred here from the 300 forum.
Right now if I am going to start casting the only thing I will be doing is the 300, so mold suggestions are good and if I don't have to worry about leading, I can work up my own loads.

Thanks for the suggestions.