HELP

[Irish]

I just finished reloading 20 rounds of .270 ammo in 4 x 5 batches for load development purposes (2 different rifles).

I started with 20 once fired cases and resized them in a RCBS press using lee dyes. All appeared fine

Loaded with primer and 58 grs of H4831

Seated 130 Gr interlock and interbond Hornady bullets (I know I should have used Nosler). Interbond were loaded to max overall length and the interlock to the crimping ring on the bullet

When cleaning the cases to remove all traces of lube etc I noticed that all had dimples in the shoulders and are tight(ish) to feed in the rifles.

Why did this happen??? Help please as I am stymied as to whatever I did wrong.

 

[remingtonman_25_06]

Little dimples on the cases might be from to much lube. Dont really know why they are tight. If you shot the cases out of your rifle, then loaded them up, they should go right back into your chamber, unless the bullet is seated to far out. When the bullet is seated to touch the lands, sometimes that can cause them to chamber a little harder then usual. Not to sure if I helped any, but...

 

[JD338]

Too much lube on the case. This caused hydralic pressure in the die and formed dents.
These cases will fire fine. When you reload, use less lube and you will be fine.

JD338

 

[steve4102]

Are yo using Neck Sizing Dies or Full Length Dies?

If you are full length sizing you may have to screw the die in just a bit to bump the shoulder back. The reason for this is because the FL Die has begun Resizing the Case-walls down to the Pressure Ring. As it does so, the Case-body lengthens slightly which in turn moves the Case-shoulder slightly forward. Then as the "Fine Tuning" continues (screwing the die in just a bit) the Case-shoulder makes contact with the FL Die and is moved slightly reward(or slightly shortens the Case-head to Case-shoulder dimension.

If you are neck sizing, then I would check max case length and COL.

The dent are usually due to to much lube. There should be no lube on the shoulder when sizing. You may have to clean the die and get any excess lube out before you try again.

 

[Irish]

Thanks to all for the suggestions. I will try again and see if see what comes of it. Maybe I was a bit too generous with the lube and it might have reached the shoulders.

By the way is it safe to shoot such rounds or is it always a better bet to scrap them when dimples appear?

 

[Guy Miner]

I've messed up and dimpled the cases myself, by using too much lube.

The cartridges fired just fine - and there sure weren't any dimples left after firing!

Regards, Guy