Rifles make an extraordinarily clean hole, even in metal. I was amazed the first time I shot a .303 at an intake manifold.

No the intake manifold was not attached to an engine at the time.

Shotguns definitely give you a ragged edge (probably requiring a rasp for initial cleanup) but have the advantage of instantly and infinitely adjustable hole size.

Last edited by bridgman; 04/28/10 10:34 PM. Reason: I was babbling...
M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
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