Discussion in 'Handloading and Reloading' started by Keyfer 55, Apr 8, 2021.
What barrel length? In rifles, if following manufacturer's guidelines, I'd say no. But for pistol velocities, the limiting factor in most cases will be chamber pressure, so they should be similar.
I'd suggest same a plated, not jacketed. Powder coating doesn't really lend any strength or hardness to the lead under it. Jackets are stronger and harder than lead.
So yes. You can go right up to jacketed loads but the next question is if your bullet can take it. My guess is no. A 275 grain behind a max charge of slow pistol powder is going to get you 1700 FPS and be very accurate and have less drop if that matters to you. That’s the same speed you’re going to get from a 240 jacketed with more energy.
Normally I load H110, 2400 ect, but with cast I think I would want something that buns a lot faster like unique.
How was the leading with a cast bullet over twenty something grains of H110?
JFP load is 23.5 H110
Both 18.5 inch barrels
Hitek leaded in 357 and 44 at rifle velocities. I have friends that use it but I couldn’t stop it from leading. Some powder coats will lead as well.
What I have found is the ones that coat well and flow out slick rarely lead.
Not everyone applies the coating correctly. I did a retention test awhile back using commercial bullets from MBC and was able to document 1,419 FPS from a 10mm with no leading. I have since driven Hi-Tek and other coatings faster with no leading but I need a better retention method to grab the bullets and haven't been able to accomplish it yet.
But Hi-Tek isn’t powder coating so how is it effected by nitro? Or is the poly resin more resilient?
same goes for 357 magnum 125-178gr
As bluejay75 pointed out, lead bullets will develop lower pressures and velocities than jacketed bullets with equal powder charges.
The flip side is that the limiting factor is pressure, so you can use more powder in the cast bullet load, giving higher velocities than those obtainable with jacketed.
Don't believe me? Check out this load from Buffalo Bore.
You will also find that when done correctly, coated bullets will have more velocity for the same pressure then their jacketed counterparts.
That is why I typically use cast/coated bullets in snubnosed revolvers rather then jacketed bullets. It might not be much but if I can get 40fps+ simply by using a cast/coated bullet over a jacketed bullets using the same pressure. That's a win/win in my eyes.
As far as the coating goes:
If it was done correctly you will need to get into the 2700fps range before you start seeing signs of the coating failing. At +/- 2700fps some coating start to burn/leave scorch marks in the bbl. It comes out easy enough with bore-tech eliminator but then again this happens in a 308w when pushing bullets 2700fps+ with 40,000psi+ loads. It's a combo of the velocity and pressure with the faster burning ball powders that caused this. I saw it with h335 but didn't with 4064 @ 2700fps+
I highly doubt you are going to be pushing your coated bullets 2700fps+.
Glad to see you on this website!!!
For those that don't know Bluejay 75, he is 1 heck of a caster and loves to experiment with those cast/coated bullets.
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