FMJ vs JHP

RugerSlinger

RugerSlinger

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I am not new to reloading but I have never come across this before. I found JHP cheaper than FMJ. This is for 45's, is there any reason why I shouldn't use JHP for plinking. My range doesn't have any rules against using JHP.

So I guess this is my real question, Is there any accuracy difference between using JHP vs FMJ?

Also, are there any other things I should be concerned about because I can't think of anything.
 
If your talking .45 ACP there may be a reliability issue as many 1911's run better on ball. I will let the others handle the details of the accuracy issue. But i would bet "other things being equal" you wouldn't notice a difference.
 
Mike-Mike said:
If your talking .45 ACP there may be a reliability issue as many 1911's run better on ball. I will let the others handle the details of the accuracy issue. But i would bet "other things being equal" you wouldn't notice a difference.
Click to expand...

Well this would just force me to make my 1911 run HPs through it.
 
Mike-Mike:2095482 said:
If your talking .45 ACP there may be a reliability issue as many 1911's run better on ball. I will let the others handle the details of the accuracy issue. But i would bet "other things being equal" you wouldn't notice a difference.
Click to expand...

This. My 1911 does not feed HPs well, if at all.
 
Mike-Mike said:
If your talking .45 ACP there may be a reliability issue as many 1911's run better on ball. I will let the others handle the details of the accuracy issue. But i would bet "other things being equal" you wouldn't notice a difference.
Click to expand...

My 1911 seems to digest everything without any feeding problems from 185 HP to 230 HP and Ball.
 
Unless you're using brass enclosed base (BEB) ball, the base of other ball ammo is lead with brass around the edge.
 
Supermoto said:
nope
Click to expand...
Don't you have more exposed lead with a JHP? (not being an arse, I'm actually asking).

EDIT

I understand about the base, but given the nose of the JHP is open and is concave isn't there more surface area of lead exposed?
 
Bob P said:
Don't you have more exposed lead with a JHP? (not being an arse, I'm actually asking).

EDIT

I understand about the base, but given the nose of the JHP is open and is concave isn't there more surface area of lead exposed?
Click to expand...

The exposed lead in the nose isn't going to burn when shot, so there is no lead concerns, whether airborn or leading in the barrel.
 
I find the JHPs to be more accurate (at least in .357 Mag).

Are the JHPs lighter than the FMJs? If so, that's why they're cheaper. Metals are expensive.
 
Bob P said:
Is that backwards?
Click to expand...
Nope.

FMJ bullets have an exposed base. The way they are constructed is that the jacket is a disc of copper that is swaged over the lead bullet from the nose towards the base, and crimped around the edge of the base. That leaves most of the base of the lead bullet exposed to combustion of the powder.

JHP bullets are constructed in a similar fashion, but the jacket is swaged in the opposite direction, from the base towards the nose. That leaves the nose of the lead bullet exposed, but the base is completely covered.

Only a plated bullet (so-called TMJ) is truly "fully" jacketed.
 
As Mike-Mike said, they may not feed. There are too many variables to list here. I'd try them. If they don't work you can always find someone here to buy them
 
Supermoto said:
Factory ammo is pretty much all equal, it should all feed without issue, if it doesn't then there is an issue with your gun
Click to expand...

So now we're only talking about factory ammo? If you see all factory ammo as the same, thats fine. I see them differently. .22 LR ammo in particular can have feeding issues in many different semiautos. I'm not saying that the gun can't be the problem, I'd even go so far as to say that the majority problems are caused by the gun or magazine. That doesn't mean ammo can't be the culprit.

sent from tapatalk mobile app
 
Dradian said:
So now we're only talking about factory ammo? If you see all factory ammo as the same, thats fine. I see them differently. .22 LR ammo in particular can have feeding issues in many different semiautos. I'm not saying that the gun can't be the problem, I'd even go so far as to say that the majority problems are caused by the gun or magazine. That doesn't mean ammo can't be the culprit.
Click to expand...

If it will chamber check, it should run. End of story
 

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