Got a new Bushy A3 HBAR with new BFI 30 rd magazine. First attempts at feeding were a little disappointing. The mag. is painted aluminum. The mfg. process, shearing, bending, 4 sliding, fixturing, etc. has raised a sharp edge across the exit ramp of the mag, transverse to the long. axis of the bullet sliding over it. When the bullet does feed, part of the bullet nose is shaved by the ramp knife edge, leaving behind some fine copper from the XM193 Ammo. metal jacket. Sometimes when the bullet feeds, the knife edge catches the casing-to-bullet cannule joint stopping the action.
I went crying to the range guy, and he loaned me an old straight 20 rd mag. Looked like it came over on the ark. It fed very well. I unloaded the new 30 rd mag, and reloaded about 5 bullets in it. These fed OK, apparently due to the reduced spring pressure? I loaded 10 more in the new mag. and they fed OK. By this time there was a ridge of copper shavings all across the mag knife edge where the bullets were dragging across. I don't know how much bullet nose shavings is within spec. I just like my bullets to fly straight.
On closer inspection, also noticed that burrs on the rolled over section of the casing catch or knuckle or fence of the mag., was digging deep gouges in the XM193 brass casing as it slid out during feed.
Question, should one use a dremel tool, debur tool, or whet stone to dress down all the burr edges on this new mag to make them feed better? Or just do the proverbial 500 rd shoot and let things wear in?