SK Standard 22LR occasionally Jams on ramp

Brian said he cleans things well. SK-Std uses 'oily' lube, I've shot at ca 2-3C and NO buildup I've seen. Maybe 'polish' the feed ramp and watch the loading process closely to see if the bullets are properly aligned ? 'Speed ' of throwing the bolt ? Sometimes I go 'too slow' and bullets go out of alignment.
 
'Speed ' of throwing the bolt ? Sometimes I go 'too slow' and bullets go out of alignment.

I think this exact thing happens sometimes with my CZ repeaters. Pulling the bolt back too softly, and not fully back to a hard stop, can cause a feeding mis-alignment. This use to happen all the time with CCI ammo in my CZ's. Since then I have converted to SK and Eley, and I always try and pull the bolt back (with the side of my index finger, pointing my hand up and rotating back) to a full hard stop to ensure the bolt is back all the way for a robust ejection of the spent case. This seems to allow the next round in the mag to feed up in proper alignment for a good feed.
 
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