by Woodsbum
Every once in a while I get roped into doing an off the wall task to help someone out. This time I ended up helping out a friend of mine with her grandfather’s old vest pistol. They did not know anything about this pistol and had found that it would jam up consistently. It appeared that the feed ramp on the barrel was hanging out too far and was catching the lip of the casing when a new round was fed from the magazine. Being the highly motivated and overly DIY type person that I am, I went ahead and volunteered to polish up the feed ramps to get rid of this lip a bit.
Here is the pistol.

R.K. Vest Pistol
History:
Gunmaker unknown, but from Spain.
Typical Eibar-pattern, proofing code “star over D” indicates this pistol is from 1931.
Technical Data:
SYSTEM: self-cocking pistol with internal hammer
CARTRIDGES : 6
CALIBRE : .25 ACP
BARREL LENGTH : 57 mm , 6 grooves right hand twist
WEIGHT EMPTY : 390 g
TOTAL LENGTH : 116 mm
TOTAL HEIGHT : 83 mm
TOTAL WIDTH : 26 mm
TRIGGER : Single Action
SIGHT : fix groove
SAFETY : safety-lever
FINISH : blued
GRIPS : hard rubber
Here is what I see with the feed ramp.

Feed ramp

Polished up a bit

Basic disassembly

Full schematic