The panel expects the advertised range to be conservative when effective and maximum figures are identical. The explanation uses a 90 percent probability of landing within a destructive margin around the target as its working definition of effective range. A shell could travel farther while falling below that level of reliability. Maximum reach would therefore leave an unanswered question about the probability of a useful hit. This distinction is applied to the speculative heavy-gun design, without a tested performance result.
Notable Point · 3:17:57-3:19:23
Effective range and maximum range for guided shells
The range discussion separates reaching a distance from reliably landing close enough to damage the target.