Novice reloader looking for help

[Roninco]

#3. Use rifle, adjusted die until it take little to no force to close bolt
Do not have tools to compare

Great, seems like we are making progress. Did you remove the firing pin and ejector plunger to eliminate cocking piece and case resistance when you did your bolt closing test? This gives you the best feel for setting the shoulder setback.
How many firings on the brass when you did the bolt test? It can take two or more firings for the shoulder to reach maximum chamber length. With a new chamber I will test a case after each reload and firing until I feel resistance, then I know the brass has reached chamber dimensions. Then is when I set up the sizing die.

 

[cbk57]

Great, seems like we are making progress. Did you remove the firing pin and ejector plunger to eliminate cocking piece and case resistance when you did your bolt closing test? This gives you the best feel for setting the shoulder setback.
How many firings on the brass when you did the bolt test? It can take two or more firings for the shoulder to reach maximum chamber length. With a new chamber I will test a case after each reload and firing until I feel resistance, then I know the brass has reached chamber dimensions. Then is when I set up the sizing die.

No sir.
I just worked the boat is though I would be in the field

 

[cbk57]

No sir.
I just worked the boat is though I would be in the field

This particular Brass is on the third firing

 

[Chas1]

How much lube you put on that fella? Also the vent hole in your die could be plugged.

+1. I have had 1 dent appear in the same area when I put too much lube on cases.

 

[Roofman]

I'd say based on experience you may have a couple of problems
Reset you die for your setup. First clean your die real good and watch your lube. I think your setup is wrong and that's where your getting the dimples.

 

[Alibiiv]

Novice reloader, loading about a year now, i was working on load development for my 7MM RM, was on low end of charge and 1 round developed 3 wrinkles just below case neck, brass was of name brand, this was the 3rd time it had been loaded, i was clocking the rounds and it was in range of the 6 rounds i speed checked, can anyone tell me why only this one case did this.

It would be a good if you provided a bit more information on the case manufacturer, the load data to include the powder and the charge, the bullet weight, type of bullet, the number of reloads on this brass, and the rifle that you are shooting the load out of. It appears that you have some case separation at the neck, that could cause the gases from your load to push back into the chamber and cause the gases to collapse the side of the case. I have never seen this happen before, other than using too much lube on the case. Usually when something explainable like this happens it becomes a process of elimination to figure out what is causing the issue. I'm reply #48 and just read some of your answers. I would suggest starting from scratch with "NEW" brass. I tumble, then anneal, the full-length resize (my preference), bump the shoulder back .002 thousandths in the process. If I am starting with a new load, I will select a load in the middle of the load data, meaning not the lowest load, and not the maximum load and then seat my bullets.

 

[Roninco]

+1. I have had 1 dent appear in the same area when I put too much lube on cases.

Dent is occurring after firing. See posts 6 and 7.

 

[JAYgs8163]

+1. I have had 1 dent appear in the same area when I put too much lube on cases.

It's happening when he's firing not resizing.

 

[GUNNNN]

Novice reloader, loading about a year now, i was working on load development for my 7MM RM, was on low end of charge and 1 round developed 3 wrinkles just below case neck, brass was of name brand, this was the 3rd time it had been loaded, i was clocking the rounds and it was in range of the 6 rounds i speed checked, can anyone tell me why only this one case did this.

Did this happen after firing or after you sized the brass

 

[Calvin45]

Dent is occurring after firing. See posts 6 and 7.

As others have said, I bet this doesn't happen anymore as you more closely approach max charge

 

[GUNNNN]

View attachment 348905
Had 3 wrinkles

Sorry I didn't get to the last post du huh

 

[Brian0615]

This can be caused by a lack of seal at the neck and shoulder . Was this a low charge weight load? Cause because the case isn't sealing gas from the chamber, neck could also be too hard to expand all the way

My guess as well. If your charge is too low, the shoulders are denting because the pressure is too low to fully expand the case and seal it in the chamber.

 

[William H]

View attachment 348905
Had 3 wrinkles

This is definately caused by pressure escaping into the chamber around the case. The black ring around the base by your thumb indicates a gas leak even though you say there is no sign of damage to the case. I've had this happen on my 300 Win Mag, but it was due to case separation. I agree with starting with 1-1/2 to 2 grains below max and work up from there. Good luck.

 

[JAYgs8163]

Was the chamber of your rifle freshly cleaned and that was the first round fired after cleaning it. Is it possible you had some left over residues in the chamber from cleaning? When you fired the first round this was the result. Residual cleaning chemicals in the chamber on first shot is my guess.