Then why are Sako and M16 rifles not blowing up regularly?
Don't you have some AR15 blow pictures somewhere?
The design of the AR will keep the extractor in the action.
Assuming the kaboom does not completely destroy the barrel extension and the lower.
try hard enough, anything will disassemble
I am sure reloaders have blown SAKO’s all to hell, but they are expensive enough, and rare enough, that I can’t remember seeing any kaboom pictures.
SAKO or M16 extractor conversions on M722/M700’s will blow the extractor out of the receiver ring. I do have a SAKO extractor conversion bolt for a M722 and the extractor is exactly in line with the right bolt lug race. There is absolutely nothing to keep it in the receiver. And that is also a risk with M16 extractor conversions, that the extractor can be blown out, into the shooter’s eye.
See what happened in this picture, gas ripped off the extractor and the side of the bolt, and blew the receiver ring.
The thing is, Mike Walker designed his rifle to contain pressure inside the bolt head and inside the three rings. He did not design his rifle with M98 Mauser type gas venting features, so breeching the bolt face, will create passages for gas, brass particles, and what ever else is there, to go into the shooter's face. At least the SAKO and AR15 have gas deflecting measures.
The bolt guide on the SAKO should keep the extractor inside the receiver ring, or at least deflect it. Up to a point.
Do you believe that AR15’s and Sako’s are not blowing up or have not blown up? What makes you think that? If you have not heard of AR15/M16 or Sako blowups, maybe that is because no one is required to call you up, and inform you. So many people have this delusion that they are the center of the universe and unless they have heard about it, it has not happened, or it does not exist. The universe is a lot larger than any human cranium. (though infinitely smaller than human ego) As the guy said, just because you have not seen black swans, does not mean they do not exist.