Buying concave gun punches

I'm looking for a set of concave ground gun punches. Looking online I really see the ends well enough to see if they are flat or concave.
Or am I asking for something that's not out there. I could do some lathe work but prefer to just buy what I need.
I'm disassembling my dad's NEF 22 pistol which I carry with me now. I want to give it some good maintenance and file off some sharp square edges and refinish it. I dont like the crude finish I like hand finishing to my satisfaction. I know they are cheap guns and sort of crude finished but it's what I use for my protection.
The pins are pretty small and I dont want the punch slipping.
My guns are more a tool for me. I like guns and come here often to see what you guys talk about but I dont own any expensive guns.
I would like to stay under 50 bucks.

My guns are
Ithica 22 from early 1960's
Marlin 22 magnum bolt action
And this NEF 22 pistol.
You guys can laugh.
I could use a 12 gauge for a bed post prop.

Here you go.

BROWNELLS CUP TIP PUNCHES | Brownells

Thanks. My redneck terminology made a lousy search. Wrong keywords.