Do shoulder dimples significantly impact accuracy?
I loaded a box of .270 ammo the other day and realized out in the field that a few of the cartridges had slightly dimpled shoulders. I assume I used a bit too much resizing lube or got it on the shoulder during resizing.
The dimples aren't very deep and hardly noticeable, but I'm wondering if there are any concerns about accuracy with these dimpled rounds? This is the exact same load I've been shooting for two seasons with great accuracy and success. I want to know if these slightly dimpled-shoulder rounds will significantly diminish my accuracy or if I can shoot them with confidence. I'll put them at the end of the box anyway and shoot the perfectly shaped rounds first, but I'm just curious about the side effects of dimpled rounds.
Next time I'll be more careful about over-lubing when reloading.
Thanks in advance for the advice.
The dimples aren't very deep and hardly noticeable, but I'm wondering if there are any concerns about accuracy with these dimpled rounds? This is the exact same load I've been shooting for two seasons with great accuracy and success. I want to know if these slightly dimpled-shoulder rounds will significantly diminish my accuracy or if I can shoot them with confidence. I'll put them at the end of the box anyway and shoot the perfectly shaped rounds first, but I'm just curious about the side effects of dimpled rounds.
Next time I'll be more careful about over-lubing when reloading.
Thanks in advance for the advice.
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There shouldn't be any accuracy effect. The dents will fireform right out. If they were deep, they could possibly crack or fail, but you say they are shallow.
No sweat. Use them to verify your sight-in or for practice if you wish. Your other assumptions about lubing are spot on.0 -
I agree with Rocky!
Shoot them!
and
some sizing dies have a small vent hole in the die, check it and make sure it's open and
some dies have a tendency to produce small dimple in brass even if the lube is minimal!
and I also think that sometimes it's a softer brass in the shoulder area of the hull in question!
I've marked and fired some dimpled shoulder hulls and they (the same hulls) would dimple on the next sizing and others would not!
I do chamber test all the loaded rounds before going to the field hunting is the main thing! I've never seen accuracy afftected by dimpled shoulder brass, but sometimes the hull will slightly bulge behind the shoulder if dimples are severe and the hull will not want to chamber or may become stuck in the chamber, ON OPENING DAY OF BIG GAME SEASON![B)]0 -
There is nothing wrong with them that will affect accuracy. If you're still worried, use them as foulers. You guessed correctly at the cause: using a little too much lube. No worries. I'd rather have too much than not enough and end up with a stuck case. 0 -
you will NEVER see a difference. I fireform Ackley cases while running a load ladder. They will shoot just as accurately with fireformed cases as they do with new (non formed) caes.
Dings in the shoulder (from too much lube or powder kernals in the die) won't make a bit of difference in accuracy or safety.0 -
The only effect they will have is to diminish your own personal confidence in them. Do not allow it to distract your aim. Do not blame them for any miss, look elsewhere. 0 -
quote:Do shoulder dimples significantly impact accuracy?
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