Dumb new Lapua brass question

[DIANEB]

No need, Lapua finish of their flash holes is as good as any.

There is an online debate by the long range/bench-rester shooters as to whether Lapua drills or punches their flash holes, and whether that is even an issue. Bryan Litz in his Modern Advancement Volume II reportedly claims they are drilled (I have never read this book). My thoughts are it does not matter as we only worry about whether there is any need for internal chamfering. I have never seen the need to do this with Lapua; their quality control and finish is excellent and no doubt why they are the preferred brand for high-end competition.

If you are concerned about their 1.5mm (0.059") holes being small then it's perfectly fine for primer spit. The only time primer holes are an issue for me is if you tumble in walnut media after removing the primer. if your media is small enough there will be pieces clogging the occasional hole. You can easily check by holding cases up to the light.

European small primer holes 0.059" are a bit narrower than the US 0.062" but Grendel die manufacturers have deprime stems that cope with this without sticking.

No need to drill wider and in fact this may be dangerous. No need to chamfer. I read online that Jack Nary did a test of 6BR flash holes seeing if chamfering or drilling made any difference to results on target. With Bench Rest guns you can see if these minimalist efforts make a difference. Apparently, they did not. So, if Bench Resters can't see a difference then we won't either.

Ok thanks, I was just curious after reading all the pros and cons on the flash holes...