Originally Posted by Tigger (Post 3126149)

That's a little creepy for sure. Wonder why it is made in such an unfavorable fashion for reloading. Might want to look into a different powder. And be very careful with that first shot.

Originally Posted by tvfreakazoid (Post 3117650)

I know I'm not suppose to get political on here but its firearms related . No discussion needed.
I got this from military arms channel aka MAC from a Facebook post.
Save M855: Protect your 2nd Amendment Rights

Originally Posted by Scott@Synergy (Post 3126167)

Might be ok, check this out

Compressed loads...or change powder? - AR15.Com Archive

Originally Posted by Neil912 (Post 3131600)

If they ban the AR or 5.56 rounds I will LOL hard! My brother just bought one several months ago. After using the M4 for several years and the M249, I purchased the SCAR 17 for the .308 round used. Really is a nice rifle that I combo up with a FNX-45.

Originally Posted by Neil912 (Post 3131600)

I am thinking about buying the short barrel for the SCAR and putting a can on it. Not sure if I want to hassle with ATF for 6+ months waiting to get approval to get it.

Originally Posted by MacCool (Post 3131616)

Who's banning 5.56 rounds? The brouhaha was only over the possibility of ATF banning M855 (armor piercing) from civilian sales, and within two days of going viral the ATF issued a statement that that info was incorrect and due to a "publishing error". The concern that bolstered the rumor is that, since people are making AR15-based pistols more often now, it violates the law concerning use of "armor piercing" ammo in pistols (will penetrate body armor).

If they ban a given firearm by rifle, they aren't going to ban just AR15s and variants...they'll ban by category (based on feature set) and the SCAR17 will be part of the ban. Caliber isn't part of the criteria that governments use for defining "assault rifles".

In the meantime, there is still no problem, or even rumored problem, with XM193 ball ammo in 5.56, nor with any of the loadings in .223.





Are you only going to keep the rifle for 6 months or less? What else are you going to do during that period? If you get it, you're going to be shooting it with the long barrel, might as well be waiting for a stamp. The NFA process isn't difficult, and with e-filing the approval process can be quite simple. Personally, I have found the "hassle" of getting a tax stamp to be negligible, especially compared to the value and convenience of my rifles being SBRs.



/

Originally Posted by Tigger (Post 3131727)

Excellent post. And I agree that the hassle of a tax stamp is purely the wait and that's really a non-issue.

Originally Posted by Rusty (Post 3131442)

One of the things you have to watch out for when doing compressed loads. When seating heavy (longer) bullets. Is your OAL. Sometimes the powder will push the bullets back out of the case after seating. Measure your OAL, wait about 30 minutes and check again. You have to have good neck tension or a heavy crimp to hold the bullet in place.

As for burning rate. Ideally you what the powder to burn within about 3" from the end of the barrel. Burn too quickly, you get low velocity. Burn too fast, you get big muzzle flash, and a dirty barrel.

Originally Posted by Scott@Synergy (Post 3131743)

It's been a week, all good. The 4064 are big cylinders so lots of room after being crushed I'm sure some broke and just filled the gaps. I'd be more worried with ball powder doing this. Only issue I noticed is I have to use LC brass. All others fill up into tthe neck.

Originally Posted by Rusty (Post 3131911)

Brass from different manufacturers have different internal volumes. Also from lot to lot from the same manufacturer may be different too. This will have an effect on how much you can fill a case and on velocity too.

Originally Posted by Scott@Synergy (Post 3135191)

I gotcha. I'll just keep an eye on these with bullet and powder and cases.

So what am I looking for though in the end? Use a chronograph and try and get the bullets as fast as possible without blowing the case/primer/me up? I'm sure even a slow 223 can be accurate to a distance. I've just never done distance. I know at 100 yards my 10" is dead on but is it deadly if only a few ftps cause the barrels so small?

I know any reload I've done and any ammo I've shot doesn't even touch my ar500 plate. But a guy with normal 5.56 FMJ 55gr out of a 20" barrel blasted right through like a knife through butter. I'm hoping this 16" 416 barrel is a little more powerful.