"Immunity is moving," said one advocate of gun control, who spoke on the condition of anonymity so as not to appear to be publicly conceding defeat.

Vice President Bush conceded publicly for the first time today that he was "troubled by some of these allegations" of ethical impropriety surrounding Attorney General Edwin Meese 3d.

Mr. Darman thus became the first Administration official to concede publicly that the plan's projections of Treasury-bill rates of 4.5 percent in 1991 and 3 percent in 1994 were unrealistically low.

Although he publicly conceded the race last night with graciousness and a smile, Mr. Florio, friends said, is still disappointed that his opponent spent $35 million to his $2 million.

Initially, the Vice President sought to control the political fallout when the secret initiative was first discovered by publicly conceding in December 1986 that "mistakes" had been made.

The ties were restored on Sept. 27 after British officials publicly conceded that the book had offended Muslims and said the Government had no wish to do so.

Unahppy With Tartabull But there could be more to the Tartabull scenario than what the Yankees concede publicly.

HOWARD JOHNSON Harazin has already publicly conceded that the third baseman's name has come up in talks.

Only a month or so ago, for example, Mr. Clinton, struggling even then, conceded publicly that his problem was a lack of "focus."

After their release, a senior Minsk religious affairs official publicly conceded that the retreat was legal since private individuals had organized the event.