FHA loan originations declined by 10.5 percent in August from July, following a downward trend that seems to suggest that private mortgage insurance companies are gaining the upper hand against their biggest government-backed competitor. Volume dropped to $16.8 billion in August from $18.8 billion in July, and from $22.1 billion a year ago, according to Inside FHA Lendings analysis of FHA data. Purchase-mortgage originations comprised 68.7 percent of FHA business for the month as rising interest rates slowed refinancing activity. Despite the increase in purchase lending, FHA lenders noted it was ... [1 chart]