I am not familiar with a Shikari, have never heard of it until I heard it here.
I did recall reading in the FAQs about the strenth of a HANDI, so I went back and looked it up.
Don't know if this helps or not!
Here it is.
Re: New Guy With A Handi Rifle Question
« Reply #5 on: March 12, 2007, 12:11:29 PM »
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The Handi is factory available in .500S&W with a SAAMI maximum pressure of 60kpsi, which is 10kpsi over any Ruger #1 load. But your shoulder will tell you what loads it will handle!!
As AZ223 mentioned, you can throat the .45-70 yourself, so you can shoot the bigger bullets, see my throating link in the FAQs, while you're in there, spend some time reading, there's lots of info there for newbies.
Tim