Gas checked mold for AR-9mm's?

[Castinator]

A follow-up of this old thread (https://castboolits.gunloads.com/showthread.php?414067-What-cast-bullets-loads-are-you-using-in-the-ar15-9mm-s),

I now have 2 9mm AR's: A Sig MPX and a homebrewed CMMG. Both eat my powdercoated Lee 356-124's just fine:

307026307027307028

But I am not satisfied. I'd like to find a gas checked 9mm just because (please do not try to talk me out of this). Let's call it peace of mind for a $2000 piston-operated firearm (again, resist the urge to tell me how powder coating vitiates the need for gas checks, as this is about want not need).

Is anyone doing a gas checked 9mm design with some decent load data (i.e., approximates the dimension of a popular cast bullet design)? Ideally something that feeds well (e.g., truncated cone).

Silly me, I bought this design (http://www.accuratemolds.com/bullet_detail.php?bullet=35-125YG) from Accurate Molds just to discover it was made for 357 Sig (too long to load safely for 9mm), and now I have to use it for 38/357.

I was thinking this:

http://www.accuratemolds.com/img/bullets/catalogue/35-120BH.png

Or customizing this to include a check:

http://www.accuratemolds.com/img/bullets/catalogue/35-125E3.png

I prefer the latter because 125 is more common in load data and it has a recessed front for good chambering.

[Grayone]

Sages plain base gas checks would work. I check the RCBS ,44 SWC with them and then powder coat and use in a 44 Mag rifle. No leading and good velocity. Took a deer this week with them.

[pacomdiver]

or get one of the pat marlins check over plainbase checkmakers and use the bullets and same load you use now