416WSM on Siamese Mauser & 416/348Ackley Improved on Martini

[BlueFlyer]

On the safety front, to do a proof of concept I had an associate print one of my designed safety levers in plastic. For some reason unknown, the hole for the locking pin was missed, so I will have to drill it.

I need to anneal the bolt shroud and then modify it to accept the lever. Trials will be done without the firing pin spring as the plastic lever will not withstand the spring force.
Once I am happy with the function then I will get a few machined out of 4140 on a machining centre.

At the range on Sunday I forgot to mention that all the ammunition was crimpted using the Lee Factory crimp. I am not sure if the crimp helps to reduce the velocity variation due to a more consistent neck retention force, but the variation improved with the latest batch.
I put all 3 rounds per load charge into the magazine and fed and ejected them without any problems. That was a big relief to proove that the feed mods had been effective under recoil.

Here is the ballistic and recoil table with the headings so it is easier to understand.
Yes, the full charge 416WSM 9.4lb rifle recoils the same as my 45/70 6.5lb rifle, my shoulder can confirm.

 

[Rule 303]

That safety seems to be coming along nicely.

Thanks for printing the tables with the headings. Seems like the 416WSM is good for Buff and Elephant.

 

[BlueFlyer]

Seems like the 416WSM is good for Buff and Elephant.

Given the $, it is more likely to get the Aussie big 3, Banteng, Buffalo & Scrub Bull.