I have a couple of rifles and pistols that had 1/16" brass pins.
I redrilled the holes to 3/32" and put in 3/32" brass pins.
That way ,
If I need to pull out the barrel.
I use a 1/16" steel pin driven by a wood mallet.
5/64" brass pins also work very well also with the 1/16" steel pin as a driver.
I just use a 1/16" piano wire about 3" long for my drive pin.