Somewhat hard question to answer because many times a natural could be very strong at one lift, but very modest on the others. For instance, I've seen naturals put up very strong numbers in the dead, while putting up very average gym rat numbers in the other two lifts. A good rule of thumb is that for a three lift powerlifting total, steriods tend to add 20% to 30% to the number, heavily tested raw vs. untested raw. So, say a untested lifter gets a #2000 total, I'd expect a good natural to be in the 1500-1600 range, maybe a bit less for an average lifter, bit more for someone with superb genetics.
