Been thinking about this post a lot...I guess if you would like another rifle, and for most of us there is always that "one more rifle" we would like...then it would be very cool to pick up a nice .58 for an Elk rifle.
On the other hand, if you are experienced with your .50 calibre long rifle, and would like to take an Elk with it, I think you'll do fine by loading up a little hotter and making a careful shot, and passing on shots that don't feel just right. You CAN take Elk with your fifty, and you don't HAVE to go to a bigger calibre to do that. But again, if you would like a larger calibre "Elk Rifle", then by all means...DO IT!! It would certainly give you a little "insurance".
A .58 does not have to be a heavy rifle...my .62" Jaeger weighs 8.25 pounds and feels like it weighs about 6 pounds. In fact, just as an example, a rifle in .58 or .62 will weigh POUNDS lighter than the same rifle in .50 calibre. So in it's self, a heavy caliber does not always mean a heavy rifle, and the bigger the hole in the barrel, all other things being equal, the lighter the rifle will be. One reason I chose .62 over .58 for my Jaeger was for lighter weight....and I HOPE to go on an Alaskan grizz hunt SOME day with it, before I become a geezer! So in other words, I went with the biggest calibre possible, in the barrel contour I wanted, in order to get minimum weight, and maximum power. If I never do my dream hunt, I figure the .62 will still work "ok" on deer, elk, and black bear around here. !!!!!
:hmm:
Using a shorter barrel on a large calibre rifle will also take off quite a bit of weight. Other tricks to save weight would be swamped and tapered barrels, and octagon to round barrels.
I don't see any problem building/having built or aquiring a middle-weight .58, (something in the eight pound range) unless you insist on some heavy contour to contain mega-charges of powder, or insist on a super long tom length barrel. For sure, a .58 caliber, heavy, straight sided barrel, 42" long rifle would be quite a beast, as would a half stock rifle with some of the "bomb proof" barrels I've seen on .58's. Just keep in mind that for reasonable powder charges in the 100-120 grain range, you don't need a big thick bomb-proof barrel.
Having said all that, I can't argue with Captchee as to the merits of the .54 calibre, and the right barrel and or rifle in .54 could be easier to find than in .58, although I think .58 calibre is getting a little more attention these days. Just saying that if the .58 is what blows your skirt up, or floats yer boat...go for it.
Good luck!
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