Older Huntsman Questions

[BruceH]

I picked up an older Huntsman today that I don't think has ever been fired.  The serial number starts with AL, so it appears it is a 1973 model.  It is mint and I am happy, I think.  It is a 58 caliber, 28" barrel with the simple small adjustable rear sight and metal front sight.  It has the push in/out breech plug.  I took the breech plug out and cleaned everything and all I found was a little bit of very light rust - no fouling of any type.  The case coloring is still great as is the wood and all bluing.
 
First question - the two O rings seem to be good, but where can I find replacements for the future?  I see that Numrich has some, but which model/caliber they fit is not clear.  Do they tend to wear out?
 
What is the twist rate?  I found some information that indicates 1-66, is that correct?  Any good round ball/patch load recommendations?
 
The ram rod is the original collapsable one and it really does not want to stay open and locked.  Are there any replacements/better ones available?  Are there any tricks to making the original one stay locked open when needed?
 
I am aware of hang fire concerns, but is there anything else that I should know?
 
Thanks in advance for your information.
 
Bruce

[wolverine_1]

The manual is posted in the sticky above, read it for more info.

[PHATINJUN]

There is much discussion on all your ?'s right here on this forum feel free to do some reading lots of good information here. Congrats on your new purchase. I am not much for round balls but all minnies shoot very well. Starting load info is in the manual. I have had no issues with the o rings. The .58 is 1-66 the .45 is 1-56 . Kurt

[BruceH]

Thanks for the info fellas.  So Kurt, the O rings don't tend to wear out?  I was not sure  the minnies would shoot to well w/ the 1-66 twist and shallow looking rifiling.

[PHATINJUN]

I haven't had any problems with mine I got them on a couple of plugs .I may of put new o rings in mine just for because but the white plastic or teflon one has never been changed. Any o ring that fits is ok it doesn't really need to come from H&R. My .58's really only get shot 10 or so times each yr to make sure all is still good with them but mostly I shoot my .45's the most. Kurt