Metallurgists tell us that drawn brass is much stronger and more durable because the grain structure is actually rearranged during the process.
From RCC's web site:
Since we are not held back by the limitations of a draw system, we are able to use higher strength alloys to manufacture cartridges. Our new C272 brass alloy has a much higher tensile strength and tighter molecular grain structure than C260 brass, without losing the needed elasticity. Test results have been very positive as we’ve had reports of increased in velocity and energy and lower shot deviations versus C260 drawn brass. But the test is what you can do with RCC Brass™ reloading brass products.
