Treat them as CAST or Jacketed ??

schick

schick

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I have looked over numerous posts about the Fontier electroplated bullets. One post was even an old post of mine. I still wonder about one thing though. Are the bullets I purchased, CMJ CAST 245gr FP, to be loaded as cast bullets or as jacketed?

I am starting to think that I should follow the reloading manuals entries for cast or linotype. My assumption is that the plating on these little devils is thin in comparison to normally jacketed bullets. I also assume that they will deform or widen-out like cast bullets while under pressure in the bore.

What do you guys think?
 
Don't know about the pistol bullets, but the plating is not thin on the rifle bullets.

I have some of their 230 grain, yes that is 230 gr, bullets in .311" diameter for the 303 Br, and the plated jacket is very thick on them!

Ted
 
I am a little worried about applying jacketed loads. These bullets have "CAST" in the name, and I am under the implression that cast bullets typically use lesser loads due to pressures.

I'm still confused.
 
No.

If a cast bullet and a jacketed bullet of identical weights and profiles, loaded over the same powder charge are fired in the same barrel, the cast bullet will show lower pressures.

The reason that cast bullet loads are generally milder is that avoids leving lead in the barrel
 
Splatter said:
No.

If a cast bullet and a jacketed bullet of identical weights and profiles, loaded over the same powder charge are fired in the same barrel, the cast bullet will show lower pressures.

The reason that cast bullet loads are generally milder is that avoids leving lead in the barrel
Click to expand...

The cast bullet will also fly at higher velocity than that hypothetical jacketted bullet of the same profile and wieght. As much as 200fps faster due to recuced bore friction.
How that plays with a plated bullet is anyones guess.
 
Thanks guys. So now I wonder if these electroplated cast bullets by Frontier are regarded as cast. (Does it really make a difference?)

After reading the responses. I can now assume that I can use loads for jacketed without worries, and without leading. Seems like a pretty good deal to me. I have examined the Frontier bullets after firing them into wet sand, and I noticed that they didn't really seem all that affected. The electroplating was generally intact.
 
You will still have to try them out at different speeds.
I load West Coast plated 30-30 ammo and find I can't push them over about 1700 fps or they loose stability. At 1900 they go through the target sideways.
 
One way you could make an educated guess would be to test the relative hardnesses. In bullets of the same weight/size/profile, the harder bullet will generally give the highest pressure.

(Generally, because the actual bore-riding material plays a factor too, some substances are more "slippery" even though harder)

The only REAL way to see how these particular bullets perform over any particular load it to try them.
 
...I have some of their 230 grain, yes that is 230 gr, bullets in .311" diameter for the 303 Br, and the plated jacket is very thick on them!

Ted
Click to expand...

I was pretty surprised when I read about those. Which .303 do you have and how do they shoot?

:) Stuart
 
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