I am flummoxed about the usage of the term bourrelet.
All shells have a bourrelet.
Its in the straight portion of the shell.
The rotating band is at the aft.
I guess ERFB shells have this nubbed feature that probably wears the barrel out.
Note the nubbed feature on ERFB shell.
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So ARDE is redesigning the ERFB shell to have the traditional bourrelet feature in the forward part of the shell.
All shells have a bourrelet.
Its in the straight portion of the shell.
The rotating band is at the aft.
I guess ERFB shells have this nubbed feature that probably wears the barrel out.
Note the nubbed feature on ERFB shell.
So ARDE is redesigning the ERFB shell to have the traditional bourrelet feature in the forward part of the shell.
Statistics: Posted by ramana — 26 Mar 2025 07:10