Ultralight Ultralight Rifles

[Trackselk]

Yeah, and your Stand1 is probably faster than these, to boot. Thanks for testing these out. These NAS cases might be a flash in the pan. Will be interesting to see how they do for others.

Now that I'm getting 250, I'll be glad to mail you, stupidlightweight, and Kyle 5 each to mess with if you want them. I'll get some loaded up asap, but just ordered them about 2 days ago...

 

[Taudisio]

I know it was discussed previously, but can someone bring me up to speed on how to modify a magazine to maximize cartridge length? And best mag? I bought a 5rd stainless duramag and have a few others laying around.

The duramag is great. I’ve posted it twice at least. The gist of it is to cut the front of the magazine off.

 

[Taudisio]

These cases are also slicker than brass, so maybe the extra pressure makes these a bad fit in a strait pull regardless.
Has anyone ran any really hot reloads in a strait pull yet?
I'll have a ladder test from the new cases and brass cases from the same barrel in about 2 weeks, depending on when my nas3 cases get here

Can you define “really hot”? I have loaded some rounds well over max, like 10% more, and blowing primers out. Pmax said I was up around 70k pressure. Never had to hammer the action open, but I have had to slap it a few times.

 

[Trackselk]

Can you define “really hot”? I have loaded some rounds well over max, like 10% more, and blowing primers out. Pmax said I was up around 70k pressure. Never had to hammer the action open, but I have had to slap it a few times.

For me I'd say just shy of leaking primers, swipe, or other overpressure signs. Just under "pressure", is what I call max. Sounds like you definitely made them hot, another knock against the nas3 cases. Hopefully it's just a particular barrel or a bad batch of cases that packgoatguy got, however unlikely.

 

[Taudisio]

For me I'd say just shy of leaking primers, swipe, or other overpressure signs. Just under "pressure", is what I call max. Sounds like you definitely made them hot, another knock against the nas3 cases. Hopefully it's just a particular barrel or a bad batch of cases that packgoatguy got, however unlikely.

I am curious if some dry lube left on the outside of those new cases would help. I hope they aren’t a gimmick, but I could definitely see it leaning that way. You can’t have your cake and eat it too. My grandfather and his generation were chasing more velocity before my dad was ever a twinkle in his eye.

 

[Trackselk]

I am curious if some dry lube left on the outside of those new cases would help. I hope they aren’t a gimmick, but I could definitely see it leaning that way. You can’t have your cake and eat it too. My grandfather and his generation were chasing more velocity before my dad was ever a twinkle in his eye.

I was thinking that too, then packgoatguy smacked some sense into me and reminded me that the case has to grip the chamber walls, or the bolt takes the load, and it can't...
-for anyone that doesn't know, lube in the chamber of any gun is a big nono

 

[Taudisio]

I was thinking that too, then packgoatguy smacked some sense into me and reminded me that the case has to grip the chamber walls, or the bolt takes the load, and it can't...

Mmmmm I think the 5.56 bolt could take a little more stress. It has more meat on it than the arc bolt does, and I know some guys that are loading their gassers up with the “bolt only” load data (62k psi)

 

[petespistol]

I am trying to figure out how to best to attach my carbon tube handguard so I can take it off to swap out the barrel. I saw this barrel nut and thought it would be helpful for attaching a carbon tube handguard as I could just attach it with screws. Did anyone else tap the solo barrel nut?

Handguard Nut for AR15 (Blowback) | Taccom3g

Just your standard blow back nut. This goes great with our foam handguard if you have one of our ULW barrels!

taccom3g.com

This company also makes a 11oz .22lr! barrel for 22 lr upper.

 

[Trackselk]

I am trying to figure out how to best to attach my carbon tube handguard so I can take it off to swap out the barrel. I saw this barrel nut and thought it would be helpful for attaching a carbon tube handguard as I could just attach it with screws. Did anyone else tap the solo barrel nut?

Handguard Nut for AR15 (Blowback) | Taccom3g

Just your standard blow back nut. This goes great with our foam handguard if you have one of our ULW barrels!

taccom3g.com

This company also makes a 11oz .22lr! barrel for 22 lr upper.

I run the Jag Composites nut which I think is the lightest and comes with holes already tapped all the way around. It works great with 2 screws or more. 30 ft lbs

 

[Thegman]

I am trying to figure out how to best to attach my carbon tube handguard so I can take it off to swap out the barrel. I saw this barrel nut and thought it would be helpful for attaching a carbon tube handguard as I could just attach it with screws. Did anyone else tap the solo barrel nut?

Handguard Nut for AR15 (Blowback) | Taccom3g

Just your standard blow back nut. This goes great with our foam handguard if you have one of our ULW barrels!

taccom3g.com

This company also makes a 11oz .22lr! barrel for 22 lr upper.

That looks very similar to the barrel nut that comes with the Kaw Valley PCC Handguard. There are also aluminum barrel nuts on eBay, but they're Chinese, and most ship from China, so there is that, but they seem to be reasonably well made (I have one, but haven't used it).

 

[packgoatguy]

I spoke with Phantom Defense today about the NAS3 ammo I used. I agreed to do a bit more testing, I'll shoot it and record velocity from a 12 and a 16 Inch barrel tomorrow or Friday. That will give them more info to go on as to whether there is something unique about this particular chamber. But it sounds like they are willing to help figure things out.

 

[Trackselk]

I spoke with Phantom Defense today about the NAS3 ammo I used. I agreed to do a bit more testing, I'll shoot it and record velocity from a 12 and a 16 Inch barrel tomorrow or Friday. That will give them more info to go on as to whether there is something unique about this particular chamber. But it sounds like they are willing to help figure things out.

That's great news. I think we have a few physical differences than what they've seen with the gas guns. 1. More pressure for longer with no gas port and the action staying in battery, but no clue if that means higher peak pressure?
2. The case may be exerting more or less pressure against the bolt without the bolt retracting. Explain that one to me?
3. The slicker case might not grip the cylinder walls as well? Hits the bolt face harder maybe?

IDK, just kicking around some ideas, but the fact that your case wouldn't rechamber easily is pretty telling, and contradicts everything that federal and shellshock has put out about these "stronger" cases, or so it seems.

I'm still hoping it's a bad batch of cases that are soft!

Now this just got me wondering if the bigger cases @Gman ran that wouldn't extract well, also wouldn't rechamber well after fired?

 

[KyleR1985]

Is anyone going to shoot animals with .223 bullet out of a 10.5” barrel ULUL past 300 yards? Brass velocity gets you there, easily.

Is anyone going to shoot animals with .223 bullet out of a 16” barrel ULUL past 400 yards? Brass velocity gets you there, easily.


Maybe I’m missing why these new magic cases are useful?

 

[Trackselk]

Is anyone going to shoot animals with .223 bullet out of a 10.5” barrel ULUL past 300 yards? Brass velocity gets you there, easily.

Is anyone going to shoot animals with .223 bullet out of a 16” barrel ULUL past 400 yards? Brass velocity gets you there, easily.


Maybe I’m missing why these new magic cases are useful?

I'm trying to make DRT bullets closer to the effectiveness of the TMK, and I think gman was trying to make a mono bullet more effective.
Other case would be for those that use holdover (lighter optics available maybe), where a flatter trajectory is more important.

The leupold ultralights are about the lightest scopes available, but finding one with anything other than a plain duplex is almost impossible. So, that requires holdover shots much of the time. I got lucky and got a 9oz 3x9 with a b&c (?) Reticle, but if it ever fails, I'll be back with my other 2 3x9s that were holdover affairs.

If the stars aligned for a very stable rest, and I couldn't get any closer, I might some day take a deer or elk at 500ish, but more likely 450 max. And, I'll probably never shoot beyond 400. Only shot a little beyond 400 twice on elk (308 win) FWIW