No check piece, just add 3 1/2" to the bottom rifles stock.
I'll go out in the morning and measure

Thanks, John. I'm a sucker for a good stick of wood and when I ran across the guy at the show on my way out selling the pieces he'd just cut from his tree I thought I ought to have it just because (and it was only like $45). It was also special to me because my dad was with me and out west for his last time. Nine years later when I ordered the CPA I wanted it to be a special rifle so I sent "my dad's" wood. I've only ever bought two other blanks. One was at a show maybe 40 years ago. It was also a mannlicher length blank and was so covered in dust that you couldn't tell much about it, but it did have a shipping label on it from Germany and for $20 what the heck. The other I got when a friend from Botswana was visiting and we went to Reno as part of a tour of the west and the Safari Club International show was on. His brother, a PH, was there so I got to have a good look around. There was a man and his son there and they had piles of butt stock blanks. They were really nice folks and let me sit on the floor and go through them. For their quality they were really inexpensive. I picked one out and his son found me a matching forend. Later I happened to show it to Shiloh's stocker (Shiloh had tables there) and told him what I had paid for it and asked what he thought of it. He said where is this guy. Again I had no idea what I was going to do with it, I just liked the wood. Later I decided I needed a buffalo rifle built from a rolling block carbine I had and sent the wood along to Dave Higginbotham, may he rest in peace, to see what he could do with it. Here's a pic of what he did.

Much obliged Sam.
Weather turned sour fast, and the CIC has banned me from my shop
till the weather swings better.
I'll be having the two blanks for my A) and B) 1871 Projects cut on a
pantagraph. My hands and arms have been thru a lot of NS.
17 December more on the right hand & arm, so I'm sidelined for a spell.
  As I mentioned to JLouis, some wing nut on funny mushrooms cut
the original stock.
I added 3 1/2" in a ortho- stock surgical procedure.
Just wish that stock was not altered, but it will be the official 1871
Mauser stock pattern.

I trudged on out in the cold and mud, and found the 1871 Mauser stock. 
32" from tip of forend to the back of the butt.
This is not a stock...stock.  I added 3 1/2" tip on the forend.
So, 32" should work out to 36" blank, if the wood is good .
It's not a hard stock to make by hand, but I'm out of action for this one.

My long blanks are 38 inches

Walnut Grove Gunstocks.com in Weiser Idaho.

Last time I was up there Chris had over 6000 blanks from plain to WOW!!!  He actually travels Washington and Oregon hitting the old growth walnut orchards.

I have bought over a dozen blanks from him over the past ten years.

That said, you cannot go wrong with Cecil.

Rich