Model 1903 Barrel Check if bent

[Old Flash]

Hey calgunners. I'm selling a 1903 which was re-barreled with a Sedgeley barrel and the question came up whether I know if its bent. I can't confirm it so I searched internet and found an easy procedure to test for a bent barrel.
This was on milsurps.com and written by Jim Tarleton: "Open your front door in the daytime, stand back in your foyer with your rifle, bolt removed, and look through the barrel at the edge of the door. Once you get the edge of the door in the middle of the barrel, you will see a line going down the bottom length of the interior of the barrel. If that line breaks, you have a bend at the break."
I followed this procedure and saw the continuous line inside the bottom of barrel. I rotated the rifle and barrel a few times to see if there is a break but found none on my rifle.
There is also a procedure of dropping a .300 gauge pin down the barrel to check if it goes thru without getting stuck but I don't have one of those pins.
After doing the first test, I feel pretty confident that barrel is good to go. What do you all think?

[smle-man]

If the barrel was bent as in demilled and then straightened, you will see a shadow at the bend point when you sight through the barrel from the breech end using bright daylight at the muzzle end.

[Old Flash]

If the barrel was bent as in demilled and then straightened, you will see a shadow at the bend point when you sight through the barrel from the breech end using bright daylight at the muzzle end.

Sounds easy enough, I'll give it a shot (no pun intended) tomorrow. Thanks!

Update: When I sighted through breech end of barrel using bright daylight at the muzzle, all I saw was the continuous bright bore and sharp grooves inside the barrel. No shadows can be made out.