Gary,
There is no such manual listed in DA Pam 25-30. It's possible that this is a Special Text printed by one of the service schools.
I've always been a little leary of some of the titles Paladin and some of the others pass off as actual pubs.
IRRC the actual Army sniper manual is FM 23-10 and available for download unrestricted off the ATDL (Army Training and Doctrinal Library) Website.
There hasn't been a lot of stuff published on sniping officially.
Don't want to burst anyone's bubble, just want everyone to get what they pay for. Most pubs are available from the GPO much cheaper then the reprintsand out and out forgerys sold by some. I've dealt with Paladin Press before and have always been a satisfied customer, but I've always doubted the actual origin of some of their titles.
I'll get some URLs from the armory and post here. The offical publications website has instructions on how civilians can purchase direct from the GPO and the ATDL site has many training and doctrinal pubs available for anyone to download.
Jeff