From what I understand, not all cast bullets can be fitted with gas checks. That depends on the shape of the projectile... However, I am finding it hard to understand from the mould if it's possible to seat a gas check on these or not.
This is the two I am looking at:
http://westernfirearms.com.au/reloading ... -2280.html
http://westernfirearms.com.au/reloading ... -2237.html
Any suggestions?