Gaznazdiak wrote:The top pic is of the mark my Lee die makes on the Nosler RDF 70gn and Nosler 50gn Ballistic Tip.
I read somewhere on here someone mention the case taking a scrape out of the projectile as it is seated but can't remember where. I noticed this today, shown in pic 2, it has been loaded into freshly trimmed and chamfered case. Can anyone point to what might be the cause of this happening occasionally?
Gaznazdiak wrote:I'm a bit slow, just reread your comment, Flier. That under the arrow in the second pic is a small shaving of copper that the harder brass of the case has scraped up, sort of like a small inward dent in the neck would cause, so maybe some of the cases have some damage.
I have a tight-arsed habit of putting my wieght batched brass in clip seal bags instead of plastic storage boxes. They live in those bags for their lifetime and come into the field with me and I put the empties back in with the unfired to keep the batch together, this might be a possible cause of small dents.
SCJ429 wrote:If you outside chamfer second you can push the case neck inwards which might shave copper off the projectile. This often happens with electric powered tools. Inside chamfer second and if you are keen you can smooth things out with some fine steel wool.
SCJ429 wrote:If you outside chamfer second you can push the case neck inwards which might shave copper off the projectile. This often happens with electric powered tools. Inside chamfer second and if you are keen you can smooth things out with some fine steel wool.
axio wrote:I have had the same problem (with 223) and believe its related to neck tension, on the basis that more force is required to seat the projectile and causes dents
Bushing sizing dies with the correct bushing could solve this
Anyone with more knowledge on this topic able to comment?
JimTom wrote:You are right though mate. I definitely don’t think it is normal and shouldn’t accept mediocrity.
JimTom wrote:This is how the 143gn ELD X went at the range. Even though they have the deformation, this is a 5 shot group at 100m.
Wondering if it would get any better if the projectiles were unmarked.
As a reminder this is what they looked like before and after seating.
Flyer wrote:JimTom wrote:This is how the 143gn ELD X went at the range. Even though they have the deformation, this is a 5 shot group at 100m.
Wondering if it would get any better if the projectiles were unmarked.
As a reminder this is what they looked like before and after seating.
Hey mate, did you do all the things I suggested back on Page 1? I had the same issue with the 143 ELD-Xs, but the issue was setting up the seating die correctly and using an steady, even force when seating - not trying to seat too quickly, as Gaz mentioned.
As to whether it will hurt accuracy, from what I've seen and read, it won't harm inherent accuracy much, but it will hurt BC and change POI over longer distances - which will hurt accuracy if you mix up indented and non-indented rounds (if that makes sense).
I've shot some of my best groups with indented rounds, but only at shorter distances.