Iver Johnson made the Trailblazer semi auto .22 rifle
1965
1960
There were .22 'shorts' and .22 LR (long rifle) models made. Read your barrel to determine which you have.
The 514 was made from 1948-1970, it will shoot short, long, or long rifle (although finding longs is now becoming somewhat difficult)
Your marlin model 925R rifle accepts .22 long rifle ammo.It will handle any standard 22 long rifle ammo made.
.22 Long Rifle is a longer cartridge.
1971
22 bullets come in short, standard and long. Your rifle is telling you that you have to purchase .22 long shell bullets.
This lever action .22cal rifle was first made in the year 1976.I am not sure when it was discontinued.
First, it is Harrington & Richardson. Second- it depends. What is marked on the gun? H&Rs were made in .22 Short, .22 long, .22 Long Rifle, .22 Special, .22 WRF and .22 Magnum.
The length- short, then long, then long rifle- also the power. Long rifle usually has a heavier bullet.