Attached are pictures of my Winchester .22short Army training rifle. It was one of seven single shots I traded for. It is the only one I have left. I worked a trade with a man named Clinton Harris. He was the man who started Sierra Bullet company. He did not own the guns but was doing the trade for a friend. Clinton was a great guy and his was a true rags to riches story. I will tell you more about him in another post. This rifle, while excellent on the outside has a rough bore. Someone in the past has reamed the chamber to long rifle, which it will not stabilize. I did try some Minni Mags in it and they fired a group at fifty yards I could cover with a dime. The same guy who reamed out the chamber probably tried his hand at checkering, at least for a few minutes. While the rifle is in great shape, I wish could close me eyes and wish it into a .218 Bee.

Dear Bent Ramrod, It is too late in the day to dig up my pictures but sometime tomorrow I will try to get your request fulfilled. I also have the article from the LA Times  telling of his passing. 

Val is right.  Try it the way it is with Shorts.  I have 3 Winders, all originally in Short. You could easily chamber a Long Rifle cartridge in all 3.  The reamer might not have removed much metal.

BTW, your rifle is not a Low Wall.  It is a High Wall with the action ground to Low Wall dimensions.  The internal parts & dimensions are all High Wall.

Winchester ground down the High Wall actions before they were heat-treated.  I don't think they bothered heat treating the actions when they assembled the rifle for the Army.  There was a lot of war production going on in 1918, lots of demands for time & equipment and after all, they were just making 22 rimfires.   

In the late 20s & early 30s, Winchester would rebarrel those rifles for the guys who owned them, converting them into Hornets.  When they did so, the actions were heat-treated.  A great many winders have been converted to Hornets, Bees, & such without heat-treating.  Most often, it works OK, with no problems.  But not always.