Modifying FMJ Ammo

[LeadSlinger585]

I've got some M75 ammo I was thinking of attempting to modify into hollow points. First (and most important) question is:

Is it legal? If yes;

Can it be done? If so, what method would you try? Also, would FMJ turned HP be effective against medium sized game?

I'm thinking of something similar to the Paco Acu'rzr tool

This is the time-proven Acu’rzr tool. It not only accurizes rimfire 22s... but with the three reforming rods it also make the bullets absolutely deadly.　

THE ORIGINAL #3 TOOL HAS TWO CHAMBERS ONE ON EACH END AND CAN BE CUT FOR THE PRIMARY FIREARM IF IT HAS A EURO OR TARGET BORE, THEY NORMALLY COMES IN TWO CHAMBER SIZES .223 AND .224...WHICH COVERS 99% OR THE REST OF 22 BORES. THE BULLETS IN THE PIC SHOW THE NOSE SHAPES GIVEN BY THE THREE RODS THAT COME WITH EVERY TOOL BODY. ALL OF THE ACU’RZR TOOLS MAKE THOSE THREE SHAPES. The Cup Nose for clean cuts in paper and small game, Nasti-Nose a hollow pointer that makes the commercial ammo really expand...and the Scorp’n that gives expansion but also deeper penetration....

[3006mv]

Just file the copper tip until the Lead core is exposed and score the ogive above the cannelure towards the tip. Shoot into wet sand and report back

[LeadSlinger585]

But is it legal? I don't want to get in trouble for modifying ammo.

Apparently my father was told it's illegal.

[stilly]

If you make it explode it might be considered illegal.

However, why would it be illegal to take a bullet that has more penetration and shorten that penetration and thus make it a safer bullet? If that is illegal then this state is REALLY retarded, even more than I had thought before...

[edgerly779]

not illegal. I take some of my 9mm fmj and put them in collet on my lathe and use a center drill to open up into hollowpoints .

[stilly]

Mad props to you for having a lathe and being able to use it.

They always looked cool, I swear that if I had a lathe, I would make something circular with it...



But I don;t so I will have to settle for BT Sniper dies after he gets them off his lathe. BT Sniper has notch making dies that work on many hollow points or maybe even fmj but I have not looked lately. Lots of folks over there have cool things.

[edgerly779]

With a lathe and a mill with tooling you can mfg anything. I finish the 80% ers I get takes about 1 1/2 hours. Time well spent.

[billmaykafer]

can you fill the hole with mercury? or is mercury banned in ammo use?

[Enfield47]

can you fill the hole with mercury? or is mercury banned in ammo use?

Why would you even want to use mercury? It would have a negative effect on the bullet, probably causing it to tumble on the way the target. Here is a thread that had this same discussion a while back. http://www.calguns.net/calgunforum/s...hlight=Mercury

[FLIGHT762]

Modifying a FMJ bullet by opening up the tip to expose the lead is perfectly legal, however doing so can cause the lead core to be ejected out of the rear of the jacket base once the bullet hits it's target. If you look at how a FMJ bullet is made, the bullet jacket is open at the base. By cutting off the jacket tip, you're opening up the jacket at both ends. Makes for poor terminal performance. I'd leave your M-75 ammo as is. This was tried many decades ago by Deer hunters modifying Military FMJ ammo to use for hunting Deer.

This is all a moot point now that AB 711 was just signed. It will not be legal to shoot any animal with a bullet containing lead in this State.

[edgerly779]

In 2019 it will be illegal unless phased in sooner. And almost all of my hunting is in non lead areas so I have non lead for all my centerfire weapons. I use the homade hollowpoints for home and personal defense they fragment and cause huge wound cavities. They won't go thru walls and out into the public domain.

[JagerDog]

http://www.theboxotruth.com/docs/bot32.htm

I'd look here.

Then here.

http://ccwvslaw.org/item/1453

[Mssr. Eleganté]

...doing so can cause the lead core to be ejected out of the rear of the jacket base once the bullet hits it's target. If you look at how a FMJ bullet is made, the bullet jacket is open at the base. By cutting off the jacket tip, you're opening up the jacket at both ends...

I've also heard old timers warning about how the copper jacket can get stuck in the bore of your rifle when the lead core is ejected out the front of the jacket while the bullet is traveling down the barrel.

[Divernhunter]

It is legal to do.
It is a very poor choice for a hunting bullet given all the properly constructed bullets designed for hunting.

Please show more respect for the animal you are hunting than trying this.

You would just be doing a poor job of re-inventing the wheel.

It is completely different doing a jackets FMJ bullet compared to a LEAD 22rf both in construction and speed which the bullet flys. Especially when the FMJ bullet may have a steel insert.