Quote:

---

Clark,

THe amount of runnout in ammunition effects much more then just bullets pointing straight down the bore.

You say that anything over .004" RO will be straightened by the chamber. I do not believe this to be true, in fact I have seen bullet run outs continue to degrade accuracy up to and over .015".

Also, a canted bullet will induce uneven stress in the bolt with in a factory rifle with bolt lugs that rarely bare evenly will enlarge groups dramatically.

Also, say you chamber a round with 0.005" run out and even if you chamber that round and the chamber corrects it to 0.004" run out, on one round the bullet nose will be pointed down from that .004" RO while the next one may be pointing to the left the next to the right and so on and so on. This difference in how the bullet engages the rifling will cause groups to grow as well.

I believe run out numbers are huge factors in accuracy, just as much in factory rifles as custom rigs.

Good Shooting!!!

50

---