I noticed in the Nosler reloading manual that they discourage this practice, but every other source says it is a good idea to do for accuracy. What do you guys think?

I don't understand why Nosler would discourage this. You're not confusing flash hole deburring with primer pocket reaming, are you? FWIW, I debur the flash holes on all my brass, it only needs to be done once. I've found some really big boogers in more than a few cases.

Generally speaking it is not productive. Unless you have cases with wide variations in flash hole diameters(rare), you will see no benefit. If you had a real benchrest rifle and were shooting aroun 0.1" or smaller groups, then I might would it a try. I know of plenty of rifles that shoot in the 0.3" category that shoot plain unaltered cases in Winchester or Remington.

If this really bothers you for some reason, solve the issue by buying a better brand of brass, e.g., Lapua, Norma, and maybe some others like Federal premium/match and maybe Hornady. They are more uniform and have fewer burrs to start with. Lapua and Norma have no burrs. Geo.

In my experience, it is an absolute waste of time for hunting rifles.

I don't ream the flashhole but I do deburr them. It is a one time operation and it WILL improve accuracy!

I don't ream my flash holes, but I do deburr the flash holes on new production cases after I trim them to uniform length. Occasionally, a pretty large burr takes up residence on the inside of the flash hole, leading to inconsistency in ignition, and hence, the infamous flier.

Thanks for the clairification on nomenclature, I was referring to deburring not reaming, just a glitch on my part. So I understand that deburring is a good thing? I hope so as I just deburred 100 .223 cases. Thanks-Karl

Makes no difference, unless of course you are attempting to shoot the hairs off a gnat's ass at 1000+ yards.

I do it because I've always done it. I don't know that it makes any real difference. All the rifles I own are 1" rifles not .10" rifles . It probably does make a difference in a .10" rifle.
Cpvey16

Since I ran into some RP 25-20 brass that was so crappy on the inside (boogers from partially punched primer flash holes) I now routinely ream all brass!

I actually bent off TWO deprime pins trying to deprime 30 pieces! Ended up using a short piece of finish nail before I figured out the real problem!!

Maybe another reason I choose to NOT use Remington products.

I have never posted in this forum but the title caught my eye.

I was wondering if a link to a free porn site was in the making.

sorry to disturb the disturbed and otherwise dead.

Just curious, how do you deburr without reaming the flash hole? Most tools I have seen do both in a single operation. One the other hand, the one I use doesn't seem to enlarge the flash hole because the reamer is pretty small, probably the same nominal diameter as most flash holes. I'm among those who routinely deburrs new cases. Like the man said, you only have to do it once.

"Reloading is the most boring part of the world's most boring hobby" - Mrs. Jubilado

I do both on some brass.....some flashhole deburrers also ream the flashhole to a set diameter and others just use the hole as a guide for deburring....RCBS doesn't usually cut the hole to a uniform size.....I use a #45...082 drill bit to uniform the size of the flashhole on precision reloads.....and it only has to be done once unless your primer/powder combo leaves bad deposits and on tumbled cases it lets me inspect and make sure the tumbling media is out of the case and flashhole...on some brass you can't hardly feel the cut and others it cuts a "lot" more......the small PPC size flashhole brass is more uniform and most deburrers do cut to that size.......the object is more uniform brass and ignition of the powder charge and I do seem to get more round uniform groups with my good shooting guns...and no bent/broken depriming pins......good luck and good shooting-loading!