| Huvius |
| (.416 member) |
| 05/08/23 03:45 AM |
|
Re: A Jeffery Double in 600 NE
|
Quote:
I think it was just the proof test.
These weapons were imho regulated with the 100gr load of Cordite. Jeffery has always been afraid of overpressure of cartridges in tropical areas.
That’s how I understand it as well.
120gr for proof and 100gr for regulation.
This, I imagine, is the early method and iirc, the later 600s had a proof and regulation charge of 100gr.
Perhaps only the the first few had a proof at 120grs.
Cal’s book should clear this up but I don’t have a copy.