You will spend more than the firearm is worth. Try e-gunparts.com
About $50. The RG is generally a low cost firearm of questionable quality.
20-30 USD
Any pistol made by RG is worth less than the metal it is made from.
Depends on the ammo. Hornady v-max .22 mag travels down the barrel at 2200/fps. So give or take that depending on brand and load.
Only use ammunition that is labeled on the barrel of the derringer. Never try to use anything else. If it says 22 Mag, then ONLY use 22 Mag.
i have a mod tex 22cal lr with a 22 mag interchangeable barrel
A good gunsmith can help you.
It all depends on the rifle the size of the barrel and the load in the bullet. .22 Bullets come in stubby, short, long and Mag.
just the cylinder change
Couple of possible reasons- your ammo is a different caliber than the revolver (22 Long Rifle will not fit in a .22 short revolver, nor will .22 Magnum fit in .22 LR) or the cylinder is partially blocked by fouling, rust, etc. Frankly, the RG revolvers are generally of very low quality, I would check the caliber of ammo, clean the cylinder well- and if that does not fix it, I would move on. Value of these is typically lower than an hour of gunsmith time.
75-300 or so depending on specifics
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