Good luck on your hunts man.
If I were you I'd close this thread and do your thing.
It doesn't matter what a bunch people on a forum think any ways.
In the end you just got to do what you think is best for you and your family.
That's all practical my man.
I drive about 40k year just for work.
If I drove a tundra to work I'd loose so much money it wouldn't be viable.
I'm not so vain that I push economics aside to pretend I look cool.
With the money I save on fuel alone I pay the payment on the car and insurance and...
Seriously just practice how you can.
Pronghorn are in all types of terrain and vegetation.
You never know what shot may present itself.
Just go hunting. It will either come together or it won't. But it will be fun.
If I couldn't shoot prone.
Id practice off horse back like Rooster Cogburn.
Id pop up over the hill and tell them goats, fill your hooves you sobs, and id take off at a full gallop straight at them all the while blasting.