I would say that converting your Sigma 40 to 357 SIG would be straightforward however I doubt if the Glock barrel would drop in. I suggest that you contact Barstow. If anyone makes the barrel you want, it's them.
Use a density factor to make a barrel to ton conversion. The ton is a metric weight and the barrel is a volume measurement.
Normally BS 9990 is applicable in Dry Barrel Fire Hydrant. However other Standards are applicable as well
It is possible
no
no
"Best" is a very subjective measure. Barrels by any major barrel manufacturer or by Glock would not be a poor choice.
Not that I know if. It might be possible.
The round arch and barrel valult are similar in shape. The barrel vault is an extension of the round arches which form the vault or roof of a structure.
Yes. The Maverick is similar to a pistol, the Barrel Break is similar to a shotgun and the Nite Finder and Scout are similar to a minigun.
That's going to heavily depend on the capacity of the barrel. When youhave that number, here's a conversion factor that might help:1 US fluid gallon = 0.00378541 kl (rounded)
No. The 9mm is not compatible with the .40 caliber frame/slide. On the other hand, you can put a .357 SIG barrel into a Glock 22 and use your .40 magazines.
No.