You'd probably have better luck trying to find hollow point bullets with the same OAL as the FMJ's, than try and locate a shim.
On a side note. Hollow points as a general rule don't function very well after being fired from short barrels under 3 inches in length. Lately however, ammo manufactures have started developing HP's that will be more effective when fired from these short barreled compact guns. OAL will still be an issue if you are having problems with rim lock.
On a side note. Hollow points as a general rule don't function very well after being fired from short barrels under 3 inches in length. Lately however, ammo manufactures have started developing HP's that will be more effective when fired from these short barreled compact guns. OAL will still be an issue if you are having problems with rim lock.