I find taking photos of rifles and shotguns to be difficult. Granted, I am working with an iPhone. Sure I can take lots of pics but getting one that does a good job of showing a long gun as a whole with good details is just not so simple. Any suggestions?
I recently took a macro photo course from a professional (product) photographer
For his professional work he still uses very expensive digital cameras but for personal work he has generally abandoned his expensive regular digital cameras in favour of his i-phone. Recent generations of different phones have software that greatly exceed that of cameras, so do not be ashamed of using your phone. You do not need the very expensive latest phone either.
a really useful free addition that can turn a blah picture into a really good one is a free photo editing app called SNAPSEED. Developed by google. I use it on my iPhone but google it and you will find versions for android an for PC.
There are decent free tutorials available online and if you invest a couple of hours just playing with it, you can correct many things like poor exposure, contrast etc. Very user friendly.
Hope this is useful to you. If you find you take a really good picture, get a nice big print of it and display it. Most pictures these days exist only on screens, often too small to do them justice, and lost in a lot of digital clutter.
Along with the whole rifle, consider taking real close pictures of small details, not just a chunk of rifle, but perhaps a hammer or a nipple with all the rest out of focus (Snapseed again)
Hope this helps, and gives you fun really looking at all the tiny details of your rifles.