i already talked to a lawyer he said this would be a cut and dry case as the chief is changing the law
What issue or specific case is cut and dry?
Is this attorney saying he is confident he can win an "appeal of restriction" case against a chief with a business owners only policy? If so, he has figured out something that has to date eluded the likes of Keith Langer; Jesse Chohen; Bob Forrest and numerous other attorneys who have dealt with this issue in the courts. Most lawyers experienced in this field will tell you it is cut & dry - but with the courts almost certainly granting significant deference to the chief on the issue of restrictions. I suggest you ask your attorney what his track record is for LTC cases, and how many of those involved obtaining a court order compelling a chief who wanted to issue "target only" to issue "restrictions: none".
As to the second part - chiefs can change policies, but not law. Do you mean the chief is changing policies, or that the chief's current policies are a de-factor change in law? If you read MGL, you will find that the chief is empowered to place any restrictions he "deems appropriate" on the license, so if your attorney can prove the chief did not deem restrictions appropriate to the unwashed masses, you will have a case. Also, note that court precedent states that the courts roles is to determine if the chief's decision is arbitrary, capricious and an abuse of discretion - but NOT to substitute the decision of the court for that of the chief. In other words, the bar you have to meet to beat a restriction in court is VERY high.
It sounds to me like you either have an attorney without a lot of experience in this area, or who wants to "Sell the case" to get his fee. If you talk to one of the "been there/done that" attorneys who handle gun cases on a regular basis, you can expect a very honest assessment of your chances at your first office consult on the case. I question the competence (in the one very specific area of law, not in general) of any MA attorney who states that a LTC restriction case is "cut and dry" - unless he is warning you that you will lose.
And yes, I have read some of the decisions from this sort of case.
When you are dealing with legal issues, you need to use care to use precise and accurate terms to properly communicate information.