Just wondering about that! Have you done it?
Nope....not even going to think about it..........
I did think about it once......the more I read the less motivated I became........
Just wondering about that! Have you done it?
The case coating is one issue but not a big one.Reloading 5.7X28 has it's challenges.......not for the meek or mild.......
An affordable gun that shoot the 57 throws a wrench into the below...
MAIN POINT OF SELLING BELGIAN FIVE SEVEN PISTOL IS EXTREME PRICE OF WEAPON AND CARTRIDGE.
Not according to the cartels.Is 5.7 a manbun caliber?
.17hmr semi auto would be cool. Id buy one.I’d rather see this in .17 HMR or .22 TCM.
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I don't know much about this chambering, but that is what it was starting to sound like to me. Anyone got a link to a comparison of 57 and .22 WMR? Would like to see the ballistics data side by side...it’s just a 22WMR in metric centerfire.
I don't know much about this chambering, but that is what it was starting to sound like to me. Anyone got a link to a comparison of 57 and .22 WMR? Would like to see the ballistics data side by side...
Kel-Tec have stated [PDF Link] that a 40 grain .22 WMR round should reach a velocity of 1230 fps from the 4.3″ barrel of their PMR-30 pistol. This works out to 134.40 ft/lbs of energy.
This is a significantly less than the FN Five-seveN USG (4.75″ barrel), which can push a 40 grain bullet at 2009 fps. This works out to 358.57 ft/lbs! Nearly three times as powerful as the .22 WMR! 1
Glacierwolf
I am a reloading instructor with 35+ years experience.
The 5.7x28mm is a semi-auto version of the 22 Hornet - and use the same diameter bullets as the 223, 5.56mm, 22-250 etc etc etc etc etc - it is a .224" bullet. You just cannot use the same bulelts from these other calibers in a 5.7 'cause the 5.7 likes 27gr to 40gr bulelts - 55gr for subsonic.
I have a ton of experience loading 223 for NRA Highpower Rifle competition to 600 yards - and I can tell you the 5.7x28mm is a very very difficult round to reload. The factory outside coating interfers with full length sizing. The case is too short to accomplish FL sizing, de-priming, and neck sizing all at once like normal reloading easily - your better off performing these steps individually, or, wreck 20+ cases getting the die dead on perfect.
The full sized brass always needs trimming. The primer pockets are military crimped and need to have it removed with a swagger.
The big problem - FN has never relieased their pressure data to United States manufacturer's - this means none of the powder or bullet companies can publish a load with 100% confidence it is safe. I've talked at lenght with Hodgon and Sierra about this.
There is some load data on the internet, and, a few magazines - but these almost always use a local powder like 'True Blue' that is only found on the East Coast and not on the West Coast, Alaska - or sold by mainstream companies like Midway. This makes loading for this caliber very dangerous!!
Bottom line. There just isn't enough info available for anyone to reload this round 100% safely. Just take a peek at your factory once fired brass and you will notice they all show signs of over pressure. I've never blown up a rifle or pistol reloading in 35 years, but, this is a real possibility for me as I continue to work on this caliber. By the end of June I should have some safe loads for 30gr Midway Dogtowns, 40gr Nosler BT's, and 55gr subsonics for people using suppressors. I will post them in this Five-Seven area. Lots of nice folks here. I have 24/7 access to a nice range just minutes from my house..
American gun shop walls and ceilings all over the country are decorated with blown up rifles and pistols - mostly from reloading. These are guns blown up that had published data available. The 5.7x28 is not for the novice reloader - and - if you can't afford to have your gun blown up - you shouldn't be reloading for this either.
Hope this helps! You can email me at the end of June and see where my load data is at.
it’s just a 22WMR in metric centerfire.
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