Pretty much so... Springs are measured for their rating at 1 inch
If you compress a 10 inch spring one inch, each individual coil moves a given distance to let the entire length of the spring travel the 1 inch compressed
If you cut off 2 inches and compress the 8 inch spring one inch, the individual coils will move farther to allow the coil to be compressed an inch like the 10 inch spring was compressed
The reading of the 8 inch spring would be near what the 10 inch spring would be rated at around 2 inches of compression instead of one inch (not exact but close as an example)
~Gimp~