It still must be understood that this volume was put together posthumously, and some of the material does, in fact, reflect that (see, for example, the later comment on responsa OC #5). Some of the material does not include the Lomdus that has characterized his responsa in the past. Yet the previous volumes also did include a substantial amount of what can be termed “apodictic” responsa that just discussed Rav Feinstein’s opinions without the Lomdus. Some people have questioned whether some of the material should actually have been included. Information told to this author by some insiders also revealed that there was material that was not included too. Nonetheless, it is a very important work that contributes significantly to Rav Feinstein’s halachic oeuvre.
The Orech Chaim section contains 50 responsa. In the first he recommends that all shuls follow the timing of the Mogain Avrohom for the recitation of Krias Shma. This is interesting as it seems to be in contrast with his earlier position in Volume I #24 to Rabbi Shalom HaLevi Kugelman. How do we understand or resolve this apparent contradiction? One may view it as a realization by Rav Moshe Feinstein that the pendulum has swung too much in the wrong direction after the publication of Volume I of the Igros Moshe (and not necessarily because of that). Especially, if one views the purported intent of the publication of the Igros Moshe in the first place. Not everyone is in agreement that Rav Moshe meant his Igros Moshe to play the role of say, the Mishna Brurah in halacha. Some would have it that the authorial intent of his halachic magnum opus was to be a running dialogue, a discourse with Torah scholars immersed in a sugyah. If this is the case, then the contradiction is readily resolved utilizing the “pendulum has swung too far” model.