The larger the caliber the harder it is to size down 0.003".... I have never tried that in .35 cal (I only need to size down 0.001-0.002" with the moulds I have), but it certainly works in .25 cal.... If I have to go 0.004" or more, I usually do it in 2 steps.... I use Hornady Case Lube brushed into the die about every 20 bullets, you can feel the additional drag when the die needs is.... You get a feel for it in short order once you start sizing bullets....Bob