I was thinking 135 gr RN bullett@1000fps?
Thought that is where I would start.
Also looked at 125gr coned shaped bullet.
Gun is 100% reliable right now shooting FMJ's.
Okay,
Off topic but on topic.
I am reloading some 124gr plated right now and had a question. So in my SP-01 they are running 1090fps...which I think is a "bit" on the slow side. But in the AR9 10" barrel they are running 1180fps due to the extra barrel length.
Question being. Do I bump up the charge .1gr to .2gr of TG (current charge is 4.0 of TG) to get to the +-1150 mark in the CZ so I am running at more of a factory speed? If i do that will I be pushing them to fast out of the AR9 for the plated cast?
Thanks guys.
Any pressure signs now from your current load? If not then bumping 0.1gr and testing would be something I'd do. Just make sure you take it slow. Stop when you see any signs of extra pressure.
Another question are the current loads accurate? If so I would leave it alone.
So yes they are accurate.
They are a plated H.P. that i am thinking of as a in a pinch defense load so I would like to get closer to factory loads. They are not a "normal" plated H.P. though. They look way more aggressive than your normal target H.P.'s.
So I was thinking get them up to speed and then do some expansion testing.
I just didn't know how fast you can push plated lead before you start to see leading and break down of the coating.
If I get them up to 1150+- in the CZ I am thinking in the AR will be over 1300.
Knock on wood, but i dont think you'll be able to push plated 9mm fast enough to break through the plating.
There are several plated rifle bullets, as well as 357mag plated bullets, that are pushed much faster than long barreled 9mm velocities, with no issues with the plating.