I shoot 200 SWC's regularly, and have done so a few times in my comped gun.
The advice rendered above is excellent. My comped gun gets nasty quick (about 250-300 rnds) with cast bullets. Plated or jacketed isn't a problem.
Two things you might also check, the BHN rating of your cast bullet and mic the bullet diameter. Some Llama's are a bit more forgiving in chamber dimensions than other guns.
Who installed the comp ? If it's one of the bushing replacement style add on comps, you might want to check barrel and comp ID measurements.
Your comp might be shaving the bullet as it passes.
In any event, something doesn't jive with your load. A comped gun (as PIMS indicated) can go more than a couple of mags without having cycling problems. Even when mine gets fouled badly, it will still cycle.
Mic the bullet, barrel, comp and crimp and tell us a little more. Sending a bullet down a tube has a fairly finite set of variables, so spotting the discrepency should be fairly easy with the right info.
Or, go to a plated SWC (another excellent suggestion) and rework the load.
BigSlick