Geez, I hope you have cleaned the barrel very good before using it.
DO NOT LUBE THE BARREL INSIDE.
THE BARREL SHOULD BE CLEAN AND DRY.
Speaking of which, clean the rest of the rifle too.
Slightly lube the guide-rod.
Like said in this thread and others,
you have to do a little experimening to see what ammo it likes.
Don't bother with target ammo, try the cheap bulk stuf.
Do not use hyper velocity ammo (stay away from Stinger, Velocitor, etc.).
Try: Winchester Dynapoint, 333, 550, etc, Federal Champion (blue box),
American Eagle, etc.
When chambering the first round of the mag,
do not "drive" the bolt forward with your hand.
Instead, let it go forward by itself.
There is some bullet imprinting into the rifling,
and because of that, the bullet will chamber with some resistance.
Letting the bolt slam forward by itself will take care of that resistance.
Keep the butt-pad into your shoulder.
If you try shooting from the hip or bump-firing
or other ghetto or redneck crap,
at each shot the rifle will move a bit on the same direction like the bolt,
and it will not cycle how it was designed to.
All Dlask barrels have been test-fired for cycling reliability.