5.7x28 help

[rbahri5206]

I wanna buy a ar57 and wanna reload ammo for it but I'm 50/50 weather I wanna attempt. I reload most basic calibers now (9,38,40,45,223,308,30-06) but the 5.7 is a whole new beast. What do you guys recommend?

[ptmn]

5.7 is a little trickier to reload. It is much like reloading bottle neck rifle rounds like the 308 and 223, but due to the actions, the case shoulders blow forward. You are going to have to push the shoulders back like you would loading a bottle neck rifle cartridge, but it's different in that the shoulder blows forward quite a bit more on a 5.7

Another difference is that you don't want to remove the case coating with tumbling.

This is one of the few rounds that you should probably buy a Wilson headspace guage. Guage all your cases to ensure safe and reliable loads. You don't normally need one of these gauges, since you can adjust dies using the actual firearm, but due to the extreme stretch of the cases, there will be some variance in the headspace of the sized cases. Hence, the Wilson guage will help instead of chambering each and every case.

Don't get intimidated with loading this round, it is like loading any other bottleneck round, you just need to take I to account a couple more variables

[Corbin Dallas]

I wanna buy a ar57 and wanna reload ammo for it but I'm 50/50 weather I wanna attempt. I reload most basic calibers now (9,38,40,45,223,308,30-06) but the 5.7 is a whole new beast. What do you guys recommend?

1) DO NOT TUMBLE the case aggressively. Ultrasound is best with water and a very small quantity of simplegreen

2) Recommended to load these on a single stage press.

3) Visit the FiveSeven forums and read, re-read, re-re-read and then read some more until you have become sick with reading about the 5.7 cartridge and are able to digest it all.


Although I agree with rbahri5206 that it is similar to any bottleneck cartridge, I disagree that it's like any other bottleneck cartridge.

Reloading the 5.7 cartridge is a delicate issue and the potential for something to go wrong is high.

YMMV, but in this case it's better to be overly cautious than not.

[Ferrum]

1) DO NOT TUMBLE the case aggressively. Ultrasound is best with water and a very small quantity of simplegreen

2) Recommended to load these on a single stage press.

3) Visit the FiveSeven forums and read, re-read, re-re-read and then read some more until you have become sick with reading about the 5.7 cartridge and are able to digest it all.


Although I agree with rbahri5206 that it is similar to any bottleneck cartridge, I disagree that it's like any other bottleneck cartridge.

Reloading the 5.7 cartridge is a delicate issue and the potential for something to go wrong is high.

YMMV, but in this case it's better to be overly cautious than not.

Spot on advice...

Also, most 5.7 Min/Max powder charges are within .4-.5g range. Check your powder drop regularly to ensure there isn't much deviation.

[rbahri5206]

this is what I planned on doing,

http://www.ebay.com/itm/Hornady-5-7X28mm-FN-2-Die-Set-FL-546203-NEW-/271424355205?pt=LH_DefaultDomain_0&hash=item3f3226fb85

Wanted these dies.
I have a this scale already.

http://www.amazon.com/Hornady-Lock-Load-Auto-Charge/dp/B003O20UOW

This is how I wanted to load
-De-prime spent brass with lee universal decapping die
-Clean brass in solution of simple green and water
-Once dry, lube and run threw resizing die
-hand prime cases
-charge brass with powder
- seat bullets
Can I get some input and constructive criticism to make this a safe round to reload.

[Ferrum]

I would look at the CH4D dies also. They are top quality and the only place that I have found that you can get a 5.7 crimp die.

[maxx03]

this is what I planned on doing,

http://www.ebay.com/itm/Hornady-5-7X28mm-FN-2-Die-Set-FL-546203-NEW-/271424355205?pt=LH_DefaultDomain_0&hash=item3f3226fb85

Wanted these dies.
I have a this scale already.

http://www.amazon.com/Hornady-Lock-Load-Auto-Charge/dp/B003O20UOW

This is how I wanted to load
-De-prime spent brass with lee universal decapping die
-Clean brass in solution of simple green and water
-Once dry, lube and run threw resizing die
-hand prime cases
-charge brass with powder
- seat bullets
Can I get some input and constructive criticism to make this a safe round to reload.

That's the same procedure I use. Lee dies, RCBS charge master, Imperial sizing wax. I use Lyman 49th edition, and accurate powders data. No need for crimp die. Get yourself a case trim shell plate from Elite Ammunition, they are the only ones that make one. I use my barrel as a case gauge, Elite ammunition makes one but they have been out of stock for months.
PM me if you have any more questions.
To be safe do not use a powder drop. Charge all rounds by hand.

[rbahri5206]

so where is this much different or any more dangerous than reloading anything else? other than the order you do things in. I have been reading about reloading this caliber and hearing horror stories and how you shouldn't attempt it. Im not trying to down play it or say that I'm a bad ***** reloader but it doesn't seem much different

[BSlacker]

Pay attention to case length. Because of the large shoulder reset the trim to length gets long. Case length is very important to the system operation. You don't want it to long.

[Ferrum]

so where is this much different or any more dangerous than reloading anything else? other than the order you do things in. I have been reading about reloading this caliber and hearing horror stories and how you shouldn't attempt it. Im not trying to down play it or say that I'm a bad ***** reloader but it doesn't seem much different

Your talking about a 50,000 psi pistol cartridge. Not a lot of room for error. being off a grain in most pistol/rifle rounds won't blow up your gun. 5.7 has that potential...

[maxx03]

The pressures generated by this small case is what makes it dangerous. Work up in 0.1 increments. 0.1 grains in charge in this round can take you from a safe load to a dangerous load.
That is why it is recommended to not use a powder drop. Also due to the blowback operation used in these firearms the brass gets worked hard , check for signs of shoulder and head separation. I can not stress enough to inspect your brass every time you reload it.

[rbahri5206]

is it any more safer or dangerous that im loading for a rifle? or is the process different

[maxx03]

It's as dangerous as any other round, The difference with this round is that there is less room for error.
If you do plan on reloading for his cartridge, I recommend using the Lyman 49TH data, due to it being milder than the Accurate powders and Lee data.

[rbahri5206]

It's as dangerous as any other round, The difference with this round is that there is less room for error.
If you do plan on reloading for his cartridge, I recommend using the Lyman 49TH data, due to it being milder than the Accurate powders and Lee data.

I have the lyman 49th, If i stick to the data in there am I within a safe range or should I still worry

[maxx03]

Start low and work up in 0.1 increments. Stick to low to mid range loads and you'll be fine. Leave the hot stuff for the factory blue tips.
I have used #5,#7, Blue Dot and 800X with good results, still looking for True Blue.