My random thoughts:

When you get the weight down, life becomes more enjoyable. Then you can also use a lighter backpack.
Clothing can easily go overboard with new backpackers. So it would help to see a list and weights of that; and list and weights of your First Aid Kit.

With thoughts on backpacking to see the mountains, I see some areas to cut down weight:

Remove:
“ .410 shotgun
.410 shotgun Slugs
.410 shotgun 6-7 ½ shot
Magnesium striker
Extra flashlight batteries (these should be the same as the GPS batteries)
Snake bite kit
Swimming trunks (hike in shorts or zip-off pants and swim in those)
Knife (use lightweight multitool; already has a knife)
Giant orange garbage bag (use the emergency blanket)
Axe
Shovel
”

Look at the big 4: backpack, sleeping bag, pad, tent. Those are usually the first items that kill. Those can all be lightweight and yet rugged.
I’ve posted partial weights of my list: http://www.backpackinglight.com/backpack...ea1113a817e.pdf

As you can see, I am extremely biased in hiking the light style, and I have learned a lot on this forum smile

Good luck in your adventures
-Barry

Edit: Wow PIKA and Glenn just beat me. Sorry if this post sounds the same.