Casting for AR

[bcnorth]

Anyone casting 225 for their AR or other semi auto. Just wondering what mold. How well do they feed and what kind of accuracy.
I tried the GC bator mold. It didn't feed worth a s#### and accuracy was marginal.

 

[just having some fun]

Casting for a Ar can be done with full function

Lots of info at castboolits.gunloads.com/forumdisplay.php?27-CB-Loads-Military-Rifles

http://castboolits.gunloads.com/showthread.php?156326-AR-15-500-Round-Cast-Bullet-Test
quote from above
I was able to put 500 rounds of cast bullets through an AR-15 without cleaning it and did not have any problems or malfunctions at all. The test showed (to me at least), that AR-15's can be made to work consistently with cast bullets. In regard to accuracy, I didn't see any significant change in accuracy, but I wasn't really testing for it.

A 1/12 twist barrel is a must have to get higher velocity

Barrel twist and speed =RPM and if you have too much rpm accuracy will suffer

Might have to load on a single stage and use a dacron filler depending on powder / bullet combo

You might have to do some feed ramp polishing

 

[JBD]

Yes I have done it and yes it can be done. I used an nei mold with gas check. Used the oven method for hardening the bullets. That said I found that working with the smaller projectiles a real pain. The bullet has a flat base which is much more difficult to seat then a boat tail. It gets old fast and 224 jacketed are relatively cheap. I used in an AR 180B and was able to get it to cycle.

 

[kschneider]

Buy a Corbin Swaging press and make plated .224 using used .22lr brass. We do and it works great.

http://www.corbins.com/kit-224.htm

 

[tjhaile]

More information can be found in this article from Ed Harris:
http://www.hensleygibbs.com/edharris/articles/Cast In an AR.htm