Where better to ask about this then here?
https://americanreloading.com/en/9mm...ted-500ct.html
How best should I extrapolate data for a .355 147gr bullet? I think be-86 would be my best bet of what I have to try and reach 1000fps.
1k fps is my goal only because thats what the factory 9mm is loaded to +/-.
I am getting 1000fps with 4" m64 and 950fps with a 4" m10 with a 158gr swc over 5.7 be-86.
With those bullets being slightly under-bore at 0.355'', I suspect that you could probably use the BE-86 data "as is" and expect somewhat lower pressures and correspondingly lower velocities in the 0.357 bore. Just the same, I would work up from the minimum loading watching for any signs of pressure.Originally Posted by 03RN
Years ago, a friend (mechanical engineer) and I hand loaded 115-grain 9mm Gold Dot JHPs over copious amounts of Unique (I won't say how much here for safety concerns) for use in a 6'' Ruger GP100 .357 Magnum. We were able to safely(?) exceed the maximum published loads by a considerable amount and, with our heaviest charges, we were able to push them to just over 2,000 fps. We chose the GP100 for its strength, and nowadays, I don't know that I would necessarily trust any other platform for such experimentation if I was silly enough to experiment with that sort of thing again.
''Politics is for the present, but an equation is for eternity.'' ―Albert Einstein
Full disclosure per the Pistol-Forum CoC: I am the author of Quantitative Ammunition Selection.
Thanks
Damn son! That is edging out .30 carbine... from a rifle.
I cannot imagine what the pressure of many of those loads was and I doubt that a lesser gun would've been so tolerant of our youthful indiscretions.
''Politics is for the present, but an equation is for eternity.'' ―Albert Einstein
Full disclosure per the Pistol-Forum CoC: I am the author of Quantitative Ammunition Selection.
The 9mm bullets are too small to fit and seal the cylinder throats and I would expect accuracy to be poor. Furthermore, I would expect gas lancing around the undersized bullet to cause erosion of the ball seats with high volume use of undersized bullets in magnum loads.
Back around 2000 I was shooting a .3555" 147 plated 9mm bullet in 38 Special trying to make a 130 power factor. I shot several thousand of them. I got around or just under 900 fps using regular Bullseye powder. After 2 or 3 years of this I had my gunsmith, Al Greco, rebuild it and he replaced the barrel. I don't know how much the smaller bullets had to do with that. It's the revolver in my avatar.
Wasn't the federal 147gr +p+ a .355 bullet? I'm not planning on high volume shooting with them. Just experimenting.
https://www.luckygunner.com/38-speci...l-le-50-rounds
I never measured any. Perhaps.If so not best engineering solution unless core pure lead and jacket thin enough to encourage base upset.
I thought I read it was just their 9mm bullet pushed as fast as they could.
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