Hi ronan
the last time I had problems with a page not printing 1:1
I had a PCB design for fit a US letter page 8.5" x 11"
I use metric A4 paper that is 8.27" x 11.69" since the UK now uses the foreign EU paper sizes
selecting the US paper solved my problem
the samsung printer I use by default no matter what the PDF image size is it fits the paper size selected in the printer control panel
have a look at re-scaling the printout using the printer control panel
select custom scale and adjust the % as required
John

PS
have a look a my PDF print size album – for some reason I can't add the picture to this post
Edited By john swift 1 on 02/10/2014 20:31:52
Edited By JasonB on 03/10/2014 07:31:24