ULE body blow back

[TuffManJones]

ok someone might have already asked this question but id idnt see it.
i've alway been told that mags work best with a powerfeed because of the blow back/ excess air going up the feed tube. the ULE bodies obviously dont have that, and on my micromag there is a hole in the side of the body where the ball detent is and that lets some of the excess air out so it has less affect on the balls, and the ULE bodies dont have that either, is anyone noticing problems with blowback and if so would drilling a slot in the side of the breech help with that or not? or do i just need to use a halo?

[rehme]

with LX you barely have any blow back

[BlackVCG]

With LX setup properly you actually get a bit of suction. The only ball bobble will be from mechanical ball bobble, which is caused by the bolt hitting the next ball in line and pushing it up slightly.

[TuffManJones]

really? i had never heard that before, thanks for the info.