Welcome to the wonderfully frustrating world of being left handed
I am Outlaw the club president lol
But seriously, first & foremost, from the bottom of my heart, THANK YOU for your service & sacrifice to this country & those of us who hold our service members close to our hearts. THANK YOU.
With the injuries you've incurred, how much weight can you tolerate lugging around? As always, weight helps mitigate recoil. In your situation, I highly recommend a brake or suppressor. We can also add a mercury reducer if necessary.
What are you going to be shooting at? Paper? Steel? Big Critter? Little Critters?
How many rounds would you like to get out of your throat?
I run a Rem 700 long action (lefty of course) in 6mm-284 from an HS Precision detachable magazine (4-rounds). It feeds well enough & offers about all the usable performance you can gain from the 6mm bore. Velocity from a 107SMK is in the 3500fps area with suprisingly light recoil & great brass life from the Lapua cases. Bore life probably won't reach 1500 rounds, high cost for high performance.
You can rock the x284 pretty much as far as you care to shoot a 6mm on targets but, IMHO, you need to keep Critter Killin' inside 1000 with such a light bullet.
My next choice would be a 6.5 of some sort. You can roll 6.5-06 very easily or with a little extra effort, the 6.5-06AI which is also an excellent choice. (The 6.5 Sherman is a similar cartridge with some changes).
With your situation, I don't know I would recommend a going larger than 6.5mm without adding weight & such. As bullet diameter & weight go up, so does recoil, there is no free lunch in our sport.
Outlaw, thank you very much for the kind words. It's always nice to hear that people are still remembering and haven't forgotten the sacrifice all of us service members both past and present have made to keep our great country free.
I will be shooting paper, steel, and nothing above a deer size animal for hunting with this one. I can't handle a ton of recoil or weight so not sure where that leaves me? Final thoughts or suggestions? Oh and I am not reloading yet, need to get a little better and get the basement all set up for my gun room before I start, so I am sure that will play a lot into what I can turn it into? Thanks again for all your help