Overcharge Question

[BigDaddyDisco]

After completing a couple hundred rounds of 9mm I realized I may have been looking at the incorrect charge amount. The charge is 4.3Gr of TiteGrooup but instead I was loading 4.8/4.9. The projectiles are Extreme 115Gr RN and that is where I got the data of 4.3 from.

I have already started pulling bullets but wanted to ask if I'm being overly cautious. Are the rounds unsafe being overcharged by a 1/2 a grain?

This was a stupid mistake but goes to show that even with 15+ years of reloading mistakes will happen it's experience that finds them.

 

[GMediC]

If it were me, I would load a few, working up to 4.9 and check for signs of overpressure.
Sure beats pulling a few hundred bullets.


Actually if it were me I would just shoot them, published data is CYA so you would proba ly be well under.

Sent from my SM-G965U using Tapatalk

 

[AmmoManAaron]

If it were me, I would load a few, working up to 4.9 and check for signs of overpressure.
Sure beats pulling a few hundred bullets.

^^^This is the safe answer^^^

With fast powders in 9mm, you can get pressure signs before you reach published max. Be smart and work the load up before pulling what you have already loaded. You may still have to pull them, but at least you'll know for sure.

Of course if you had a Ruger Blackhawk Convertible you could just install the 9mm cylinder and not worry about it.

 

[BehindBlueI's]

After completing a couple hundred rounds of 9mm I realized I may have been looking at the incorrect charge amount. The charge is 4.3Gr of TiteGrooup but instead I was loading 4.8/4.9. The projectiles are Extreme 115Gr RN and that is where I got the data of 4.3 from.

[FONT=&amp]Kind of rule-of-thumbing here but plated bullets can generally be loaded to about the middle of a max charge of lead and a max charge of jacketed. You are at the max for a jacketed Speer 115gr at this point, and that's about 30,500 CUP. 9mm isn't into +P territory until past 35,000 CUP. So I *suspect* the problem won't be it's unsafe to fire (although I'm not the one risking my gun and bodily fluids to find out, so, you know, easy for me to say). The more likely problem is the plating can't take the velocity a jacket can and you may be driving it too fast. Even if the cartridge is safe you may find accuracy is sub-par. Or you may not. This is 100% theory and I completely agree about working up a ladder of loads if you wish to shoot them. I'd also feel better shooting them in something +P rated and metal if it were my gun and my bodily fluids on the line.

[/FONT]

 

[openwell]

Hodgdon data shows 4.8gr Titegroup is Max.

link:

https://www.hodgdonreloading.com/data/pistol

So it's probably fine to shoot and see
depending on the firearm.

I would shoot & examine primers before pulling bullets.
Also ejection & recoil may tell you if your firearm likes max. loads in just few rounds.

Max listings are usually not "break the gun" pressures and data us from Hodgdon who makes titegroup.

safest way is to work up the load.
but you Did Not Exceed Max and are just at the limit recommended.

YMMV

 

[Leadeye]

^^^This is the safe answer^^^

With fast powders in 9mm, you can get pressure signs before you reach published max. Be smart and work the load up before pulling what you have already loaded. You may still have to pull them, but at least you'll know for sure.

Of course if you had a Ruger Blackhawk Convertible you could just install the 9mm cylinder and not worry about it.

This. For years I've used a CZ-52 to shoot up my broomhandle mauser mistakes.

 

[mark40sw]

QuickLoad reports
9mm luger
.355, 115, RN Rainier 9mm
COAL 1.169
Hodgdon TiteGroup 4.9grain
press max for this load 34401 psi
(9mm+p 38500, 9mm saami 3500)
4" barrel 1165fps

Quickload is not exact but i find it close most of the time.
COAL can really affect pressures in pistol rounds.

 

[DadSmith]

[FONT=&amp]Kind of rule-of-thumbing here but plated bullets can generally be loaded to about the middle of a max charge of lead and a max charge of jacketed. You are at the max for a jacketed Speer 115gr at this point, and that's about 30,500 CUP. 9mm isn't into +P territory until past 35,000 CUP. So I *suspect* the problem won't be it's unsafe to fire (although I'm not the one risking my gun and bodily fluids to find out, so, you know, easy for me to say). The more likely problem is the plating can't take the velocity a jacket can and you may be driving it too fast. Even if the cartridge is safe you may find accuracy is sub-par. Or you may not. This is 100% theory and I completely agree about working up a ladder of loads if you wish to shoot them. I'd also feel better shooting them in something +P rated and metal if it were my gun and my bodily fluids on the line.

[/FONT]

This is the answer.
Mostly extra cleaning of the barrel. Nothing a little Chore Boy can't handle.

 

[BigDaddyDisco]

Thank you Gentlemen for your input. Likely I will test for overpressure and then decide from there,

 

[BGDave]

I keep a Ruger P 85 around for these occasions....... (only partly joking)........Those are some tough pistols.

 

[Aszerigan]

I have shot thousands of 115gn plates with 4.8-4.9gns of Titegeoup. That is my pet load for target 9mm. They'll be fine, and I DO know this from actual experience.

 

[ljk]

What's your Overall Cartridge Length?

4.9gr at 1.110" will produce a lot higher pressure than the same charge weight at 1.150".

I have just loaded some 115gr FMJ from RMR, 1.125" total length, CCI 500 primers, TG from 4.4gr to 4.8gr in 0.1gr increments, light crimp.

Some 4.7gr showed pressure signs, at least 1/3 of 4.8gr had.

 

[Robert Richardson]

I have shot thousands of 115gn plates with 4.8-4.9gns of Titegeoup. That is my pet load for target 9mm. They'll be fine, and I DO know this from actual experience.

This

 

[russc2542]

4.3gr is NOT "the one load" that's OK.

Loads vary by more than .5gr between manufacturers and bullets. That's something else to consider: One manufacturers max load may be middle ground for another. Could be different brass, different primer, different bullet shape (ogive, base concavity, bearing surface area), different OAL. Something safe in a gun with a long leade might have dangerous pressure in another with a short-leade. A 30 year old saturday night special won't take near the excessive pressure than an HK will. That's why you need to start low and work up YOUR LOAD.

I've loaded 4.9gr titegroup with 115gr jacketed pills and they're hot for sure but didn't blow anything up. Again, that's my bullets in my gun on my press, etc.