Yotehunter, thanks for the reply. The case on the right is 270win, next is 280AI, then fire form 270win, and the last is the loaded round of 6mm 270 improved. I have a few loaded that came with the gun, but no information. I'm using a 280AI necked down because fire forming the 270 makes the neck walls too thin.
Here's a picture of the gun (built from a Remington Model 30) and letterhead from Hoyer's Gunshop. He was a long-range gun builder in Lewistown, PA, back in the 70's.
Here's a quote from an article I read, just to give you some background information. "Here I must mention a tribute to the late Alex Hoyer of Mifflintown, Pennsylvania. Alex Hoyer was a full time gunsmith, and has been called the dean of long range shooting. For many years he was involved in long range shooting and varmint hunting. Hoyer was very instrumental in developing the wildcat 6.5-300 WWH cartridge. He used the Weatherby 300 case and necked it down to take the 6.5 or .264 diameter bullets. WWH stands for Weatherby, Wright, Hoyer. Wright was an engineer who helped Hoyer in developing the 6.5-300 cartridge using the Weatherby case. Many long range hunters still feel that the 6.5-300 cartridge is still the finest long range hunting cartridge available.
tcdubb