My earlier-cited reference tends to corroborate this newspaper article's reference to Colt revolvers being issued to at least some of the men of Co. C/4th Texas (as well as Colt revolving rifles being issued to most or all of the company's men). It also supports the 27,000 cartridge and cap figure.
The reference I have seen dated May 1861 reported that each of the eighty-four men in the company had a Colt Model Seventy-Four, Improved Patent, five-shot rifle. In addition, fifty in the company had revolvers. Company supplies included twelve to fourteen tents, camp equipment, cooking utensils, blankets, two or three wagons, eighteen kegs of powder, and twenty-seven thousand ball cartridges and waterproof percussion caps. It was reported that the company had trained eight or ten days and that it was "all fixed up for a fight."
The buckskin uniform description is quite detailed. It is also interesting that, according to this article, each man of the company was required to pay $100 to the treasurer of the company to cover travel expenses -- not an insignificant sum when one considers that this would equate to roughly $2,100 today.