If you can compare the bullet lengths and adjust COAL accordingly you should be in a good place for starting data.
Seating depth is a real concern in 9mm, more so than 357 magnum with similar bullets,
Millions of cast lead gets fired from lever guns every year.
Cast RNFP is very popular, the RN helps with feeding and the FP keeps them safe.
Before I hand loaded I shot tons of Blazer 38 LRN in my Marlins and Rossis.
4H camp when I was 12.
My sister was a counselor there, so I spent my entire summer shooting, canoeing, crafting….
Loved shooting the bolt action 22’s, got ‘high score of the week’ once.
If you want to make a thousand 9mms, that might be an extra 3,000 pulls on the turret press.
After many years of loading 9, 45, and 40/10 on the turret, the 550 is like getting a big raise.
One issue with 550C is converting from caliber to caliber can get pricey.
A funnel/expander, shell plates, buttons and powder dumpers.
Much easier and cheaper on the T-7.
I started with the T-7, zero complaints, very precise, good leverage and room for things like ram prime and universal decappers along with a full set of dies.
I used it for rifle, revolver and pistol calibers for years. Getting serious about 9mm, I needed more speed, not to make lots of ammo...
After a frustrating day at the range where my red dot died, I removed it and put my trusty old Leupold 4X RF special on my 357 Handi barrel. Carefully bore sighted it on a yield sign across the street.
Tumbled 357 brass in walnut with a squirt of mineral spirits.
Loaded 3 small batches of 357...
Had a break in the weather today so I shot my 357 NEF Handi rifle with Romeo5 today with some handloads.
The Sierra 125 JSPs shot exceptionally well at 100 yards, really liking that bullet.
Speer 125 TMJ and 135 Gold Dot did very well too.
I started offhand plinking but something was wrong...
In my non scientific water testing the Sierra 125 soft point expands reliably at lower velocities plus it has a huge flat point.
I haven’t tried the 158 version.
I’m sure the 140 XTP will work well for the OP.
I shoot a lot of Hornady swaged lead bullets and other lead in my 22” Handi rifle with Trail Boss.
I’ve found that conventional lube can run out before you get to the end of long barrels with revolver loads.
I add Lee liquid alox as a second lube, works like magic.
I use 4 grains TB in magnum...
Looks interesting, but they only seem to have 5.7x28 barrels available.
I would love a 22 WMR, but rimfire probably wouldn’t work with that design.
300 BLK maybe?
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