Try Numrich Gun Parts Corp.They may be found on the web.
This is a .177 pellet rifle.
Your winchester model 1903 shoots a different ammo than regular .22cal rimfire made today.It is chambered for the .22 Winchester auto rimfire cartridge.This ammo can still be found I believe at Old western scrounger. Try www.old western scrounger.com.I believe they are 12.95 a box for 50 rounds,maybe a bit more.
Your Winchester model 25 rifle will take any size scope that you see fit to use as long as the rifle is drilled and tapped for scope use.If your rifle comes with a 3/8in.milled receiver rail then you must use that size scope ring bases.I recommend that a good 4X power scope is all that is needed for the effective range of .22cal rimfire ammo.
There were .22 'shorts' and .22 LR (long rifle) models made. Read your barrel to determine which you have.
All three except for the 60-T it took long rifle only
A Winchester model 1894 rifle will hold 6 rounds of 30-30 ammo total.5 rounds in the magazine,and 1 round in the chamber.
No
22 Long Rifle
Obviously 22shorts which is a 22caliber rimfire only shorter than the standard long rifle bullet
Yes
Gun shows, gun shops. A very common rifle cartridge.
No