The strongest action is probably the Push Underlever
action - Searcy use it as did Jeffrey.

One of the best (?Srongest ?) actions is the Webley
Screw Grip or Webley PHV1 Actions.

Re Are nitro express rounds loaded woth cordite the same as regular rounds?

Not sure of question.

If you are saying are they the same, to get the sam regulation in terms of pressure
and velocty, then yes but in terms of same weight of powder, no as cordite was
different.

If you are talking compared to PROOF runds, then no, proof rounds are
alot more powerful.

I hope I have asnwered your questions.

500 Nitro