Starting Over - Lil' Help, Please

[WeekendReloader]

Therein lies the rub... My gun (PPQ M2) won't cycle these Acme 125gr bullets any longer than where I am now (1.037-1.040). At 1.050, I have to rap the back of the slide to fully chamber 5 dummy rounds out of 10.

Vectan's load data calls for a minimum of 3.9gr to a maximum of 4.8gr for a 125gr RN bullet. Can I fit that much powder under a bullet at 1.037 OAL? If I do, am I running the risk of being called "Stumpy" for the rest of my life?

Again - Thanks for your patience and assistance.

You shouldn't ever have to "rap the back of the slide to fully chamber". This is a big red flag.

 

[kmw1954]

Therein lies the rub... My gun (PPQ M2) won't cycle these Acme 125gr bullets any longer than where I am now (1.037-1.040). At 1.050, I have to rap the back of the slide to fully chamber 5 dummy rounds out of 10.

Again - Thanks for your patience and assistance.

I have a 45acp Witness that is very finicky with reloads. First off everything for it needs to be loaded way shorter than published data with most plated and cast lead bullets. So what I have done with these extremely short loadings is to reduce the starting charge. Depending on the powder burn speed I reduce by .5gr to 1.0gr from start and go from there.

I can usually download these enough to where they fire and feed just fine but will not lock back the slide. That is where I consider my start point. From there I increase .2gr until I get to a comfortable shot which again is probably way below what would be max.

 

[Saluki91]

Thanks... I appreciate your advice!

 

[Dudedog]

Vectan's load data calls for a minimum of 3.9gr to a maximum of 4.8gr for a 125gr RN bullet. Can I fit that much powder under a bullet at 1.037 OAL? If I do, am I running the risk of being called "Stumpy" for the rest of my life?

Can I fit that much powder under a bullet

Just because it will fit does not mean it is safe!

If your OAL is shorter than what is listed your MAX charge will be lower as well. How much shorter matters, how much lower the MAX will be is a good question.
If you have a chrono that can help, but of course the chrono is reading vel not pressure so we can only attempt to infer pressure from the vels we see.

Looked at my Vectan data and it does not seem to show an OAL
It shows this

but that does not make any sense 19.15mm is about .753 "

If we assume their data is for a "normal" 125 RN OAL of say 1.08 to 1.11 you being at 1.04 is quite a bit shorter.
Just guessing but if it was me I would consider the MAX at that OAL around 3/10s a gr lower than what is listed.

 

[Saluki91]

Thanks

I re-set all of my dies, and that solved my problem. I suspect the sizing die was the culprit.

Acme was quite helpful as well. They confirmed that the bullet in question was designed with a 1.050 AOL in mind, and recommended that I use that as a starting point.

 

[AJC1]

Thanks

I re-set all of my dies, and that solved my problem. I suspect the sizing die was the culprit.

Acme was quite helpful as well. They confirmed that the bullet in question was designed with a 1.050 AOL in mind, and recommended that I use that as a starting point.

If I was you I would see if they had a recommended load at that oal. It's still shorter than standard