Pressure signs way below max load

[Joefrazell]

3100 is very very fast even with that long barrel. I'm not surprised your seeing pressure signs. I'd back off a few grains and you'll find your node and be safer then where you are now.

 

[Mc Fraser]

If u had pressure at 76 why would u even try 78?

I'm not proud about that decision either ...

 

[Remmy700]

I'm not proud about that decision either ...

I ain't bashing u brother but man if u are piercing primers u could get hurt brother. I have always found good nodes between 75.5 and 76.5 with around that weight of bullet. Ease back and run u a good test with say 75 thru 76. I know this ain't everyone's thing but I do seating depth way farther out than book first so I don't run into running out of case capacity. Start at say .020 off if your mag will allow and then run your test.

 

[Frog4aday]

Carbon ring? Seems anytime someone is showing pressures "too soon" with different loads, it eventually turns out to be a nice, hard, going-to-take-hours-of-scrubbing, carbon ring rearing it's ugly head. Just a thought...

 

[Remmy700]

This is with 208s but u can get the idea.

 

[William Bonnie]

I start long on coal, that way I know which way to go. If you are using digital scales verify accuracy. If problems continue, I would suspect a short throat. A nose is much better than max speed.
Be safe.

 

[Mc Fraser]

I ain't bashing u brother but man if u are piercing primers u could get hurt brother. I have always found good nodes between 75.5 and 76.5 with around that weight of bullet. Ease back and run u a good test with say 75 thru 76. I know this ain't everyone's thing but I do seating depth way farther out than book first so I don't run into running out of case capacity. Start at say .020 off if your mag will allow and then run your test.

No offence taken, I appreciate any advice.

Carbon ring? Seems anytime someone is showing pressures "too soon" with different loads, it eventually turns out to be a nice, hard, going-to-take-hours-of-scrubbing, carbon ring rearing it's ugly head. Just a thought...

I dont know what carbon ring is, but if you're referring to cleaning the rifle, I do it every 20-30 rounds.

 

[William Bonnie]

Node, not nose

 

[Mc Fraser]

Works either way ha ha

 

[Mc Fraser]

CBTO measured multiple time with Hornady gauge and sharpie method is 3.7500" with a very slight (.0005) deviation from measurement to measurement. Norma case and Berger 215 VLD hunting.

 

[FEENIX]

CBTO measured multiple time with Hornady gauge and sharpie method is 3.7500" with a very slight (.0005) deviation from measurement to measurement. Norma case and Berger 215 VLD hunting.

Are you sure 3.750" is your CBTO and not COAL?

 

[DT400]

I'm just following along here. You said back in post #6 you are running coal way UNDER what the book says. This means to me you are seating the bullet DEEPER into the case than the book and thus drastically decreasing the volume of your case and this would definitely cause higher pressures at lower gr of powder.
Do I understand what you are saying correctly?

Darrrell

 

[Mc Fraser]

Yes. I did not measure from tip of the bullet, I measured with a caliper and bullet comparator with the correct insert.

 

[Mc Fraser]

I'm just following along here. You said back in post #6 you are running coal way UNDER what the book says. This means to me you are seating the bullet DEEPER into the case than the book and thus drastically decreasing the volume of your case and this would definitely cause higher pressures at lower gr of powder.
Do I understand what you are saying correctly?

Darrrell

Sorry what I meant to say is that I seat my bullets according to the book, for example eldx 212 is seated at 3.5, other at 3.34, which is way below measured CBTO 3.7500. I don't jam the bullet nor seat them under 3.34 or 3.5 in the case of eldx 212