Yes. The Sakos are probably the more concerning because they tend to be the weaker of the 3 options being talked about. Mini 16/m16 are more complicated to install, but hold up well to high pressures.
When the bolt nose of a 700 is original from the factory, if an extreme over pressure happens the rim of the nose, where the extractor is, expands to meet the counter bore in the barrel, supposedly sealing that side and forcing the pressure out through the barrel. When the cut is made to convert to a Sako or M16, that void for the aftermarket extractor, creates a place for excess pressure to exit towards the shooter, instead of making a "seal" with the counterbore in the barrel counter bore. Thus, "compromising" the "3 rings of steel".