I believe the originator of the bedding block system was Gale McMillan. A successful rifleman in his own right, he nevertheless didn't like how the wood stocks of the day (late 50's, early 60's) would swell and shrink due to weather and affect the point of impact in unpredictable ways. His first truly successful design if memory serves was an aluminum chassis sandwiched between two slabs of wood, all shaped like a Winchester cross the course stock. I remember reading an extensive article in either American Rifleman or Guns and Ammo about the design and how labor intensive it was to make. However, it worked. I suspect that its cost in time, money and effort prompted him to get into fiberglass stocks which had all the same advantages but at far less cost and effort. I searched for but could not find the original article but maybe someone on the forum knows where to find it.
Keith
To find out the truth, I sent the following to McMillan:
"I remember reading an article many years ago (1960's ?) about how Gale McMillan designed and made the first full length aluminum chassis stock, sandwiched between to slabs of wood, which when finished looked like the Winchester Marksman stock. If I'm remembering correctly, the article was in American Rifleman and/or Guns and Ammo. Is my memory correct, or did someone else invent the aluminum chassis/bedding block approach?"
I just got the following answer from McMillan:
"You are half right. My father was the first to try an aluminum bedding block in wood stocks in an effort to counteract the movement in wood due to change in weather conditions.
It didn't work. The entire aluminum block moved when the wood would swell and warp. Besides, bedding metal on metal just didn't produce the accuracy the bench rest shooters were looking for.
Last thing, the block was not full length, it was just big enough to hold the action.
Tom Houghton and H-S Precision was credited with a full length aluminum block. They were having trouble with the for ends breaking off when guys would break them out of the bedding so they ran an aluminum rod all the way from the pistol grip to the for end tip."
And there you have your answer
Keith