good advice.
if you have already purchased a can of 4F, no harm done, but if you haven't, you can use the same powder for the pan that you use for the charge. there is some discussion about how much faster 4F detonates and so on, but it has been my experience that,
as a pratical matter, the difference makes no effect on how well the gun shoots. If you were going for world cup targets, it would be worth the trouble, but for us casual shooters, i don't think it's all that big a deal.
as far as a 'starting load,' i would try about half again the caliber in grains ... about 65 grains for a .45 caliber. (remember that these aren't
weight grains, as in the grains used in centerfire handloading 7000 to the pound; these are
volume grains) i assume that you have an adjustable measuring gadget like this one:
http://www.trackofthewolf.com/Categories/PartDetail.aspx/85/1/MAS-120
if you don't, you should get one; they're about 15 bucks, and it will last you forever. (
DON'T pour from the horn or the can into the barrel- the best case is that you're kicked off the range, but if there's an ember in the barrel and that new charge hits it, this will set off the contents of the can or horn, and you'll see the inside of an ambulance)
you might want to get a 'range rod' ... i like the delrin ones, also available from track and several other sources (don't know if Cabellas carries them or not) ... these come with a jagged tip already installed
http://www.trackofthewolf.com/List/Item.aspx/833/1/RAMROD-S-6-8-B
some folks use a metal rod with a guide bushing; this will keep the rod from wearing away at the edge of the rifling at the muzzle.
of course, you don't want to make the mistake i made and get a different thread than the cleaning accessories you use. as an aside, i wouldn't bother with a brass or bronze cleaning brush - if you use a bore brush at all, a fiber one will do fine if you go that route at all. i've found that warm (not hot) soapy water is more than enough to get the fouling out of your barrel. i keep a quart container in my collection of junk-i-take-to-the-range, and i try to get as much crud out of the bore as i can as soon as i can after i'm done shooting. if your rifle has a hooked breech, you can just drop it out of the stock, put the breech end into the pail, run a patch into the barrel with the cleaning jag, and pump the water in and out of the touch hole. if not, you might look at one of these:
http://www.trackofthewolf.com/Categories/PartDetail.aspx/158/1/FLUSH-FLINT
(about twenty bucks), or, if you can find one that has the correct threads, a gadget which goes into the threaded hole in the barrel where the touch hole liner goes:
http://www.trackofthewolf.com/Categories/PartDetail.aspx/158/1/FLUSH-RST
(these are cheaper - about five bucks, but you have to supply your own tubing)
hope this helps some. mind you, these are just one guys free opinions ... free and no doubt well worth the money!
make good smoke!