Erics,
With my particular gun/barrel, the 13.43 are just as accurate as the 14.3.
In the fall, I had the time and opportunity to shoot through a field target course again, after the official match, using the Veteran at 20 fpe. It was just for fun and an experiment to see how the .22 would do. At the time, i was thinking the 14.3 was the winner pellet for the gun so that's what i used. I shoot open class so shooting from a bumbag and harness (the distance from the bottom of the forearm to the top of the scope rail on the Veteran negates the need for a knee riser-a closed fist on the knee gets the gun right where it need to be to line up without being too hunched over-kinda cool). I used my scope to range, same as if I was shooting a course for an official score. Anyway, I hit something like 33/40. That was just a few less then I hit in the official run-through the course with my field target specific gun. So, the potential is there to make it a dual use field target and really nice general use airgun, if you're hoping to do that.
You do need to know that a .22 gets pushed more in wind than a .177, when they are both right under 20fpe. The "bigger caliber = more resistant to wind" argument only holds true when the bigger caliber has more energy, at least in my experience.
I have since learned that the gun does very well with the 13.43 gr jsb also. I haven't had a chance to run those through a field target course but I'm sure they shoot a little flatter than the 14.3. I've lately been using the 13.43 as the primary pellet for the gun and pretty happy with how it is doing in my pdog, ground squirrel, Euro dove, and starling fun. That 24inches is just perfect for a truck gun. So much nicer than trying to maneuver a long gun in and out of the window for each shot. The low power keeps it nice and quiet with factory moderator too.
I think you'll like it for your intended use.