According to the Beartooth link, these loads develope less than 40,000 PSI. Would they be safe in the Handi 45-70? It is not one of the firearms listed in the article. I have no reason to use such a heavy load...but as I aquire more skill in reloading and shooting my 45-70, I will be trying lots of different loads just to see how they differ and how it feels to shoot them. If you have "Been there...Done That" your thoughts and opinions are welcome. Thanks