Oh, brother. Seriously? This myth is still around? What Spencer rifles?
I have personally reviewed the ordnance returns of the Army of the Potomac's Cavalry Corps for June 30, 1863, and of the 92% of Buford's companies that reported, there was not one single Spencer rifle reported. Not one. The vast majority of his troopers were armed with Sharps single-shot carbines. The rest were armed with similar weapons, such as the Burnside, Ballard, Starr and Gallagher single-shot carbines.
The only Spencer rifles in the entire Army of the Potomac were all of the 5th Michigan Cavalry and four companies of the 6th Michigan Cavalry of the Michigan Cavalry Brigade, and they were nowhere near Gettysburg on July 1.
The steadfast refusal of this obnoxious myth to die drives me nuts. Absolutely insane.
And yes, it is the same Hill.