Ultralight Ultralight Rifles

Another update to my 6x45 load, now that hunting season is over and I don't have to worry about messing up my ballistics.

16" X-caliber 6x45 spaghetti contour
90 gr ELD-X w/H335 powder
Current load - 24 gr @ 2.37" = 2,504 fps

Since I upgraded to Winchester #41 .556 primers, I figured I would bump my load back up to 25 gr and try it (Accuracy was good but I was punching through CCI 400 primers so I backed off).

At 25 gr H335, primers looked great. Action cycled perfectly. Velocity went to 2,610 Avg over 10 shots with an extreme spread of 54 fps. This has me knocking on the door of 500 yds before hitting 1,800 fps.

Shot 2 groups, both about 1.5". This one's a hair under.
View attachment 1013638



That's a bummer to hear. I was thinking I could probably put together a pretty awesome load woth 95 TMK's and H335 and still be getting 2500 fps or so.
Your barrel is a 1:7.7” twist though. That might like the tmks.
 
I would say that just because they don’t shoot in my barrel, doesn’t mean they won’t shoot well in yours, even though the barrels are the same and were most likely cut with the same reamer. I’m going to have to take inventory and see if I have some of those eld-x. The g1 is only .409 vs the .400 on the vmax though. Not enough difference between the two to go out and buy a box for me.

Your barrel is a 1:7.7” twist though. That might like the tmks.

I was inneffectively trying to express my sympathy for @Taudisio because H335 is treating me very well so far. But yes, I forgot my twist rate is a little different and could add some variation between our barrel performance.

Is the juice worth the squeeze to buy some 95 TMKs and experiment? Those who have used it, is performance noticeably better than an ELD-X, to potentially lose some effective range for gaining what the heavier TMK has to offer?
 
I painstakingly read through all 4200 posts… and I feel more lost than when I started!

I want to build a 6 ARC, specifically for thermal pred hunting in SEAK in the winter. Mostly 100-500 yardages. Will be suppressed. Not looking to do mag dumps. Just an accurate dog killer. Need to help out my goat herds. Wolfs are thick this year. If I’m not getting them in my snares or footholds, I’d love to call them into the same pinch points I’m already trapping…

Not necessarily looking for something crazy light, but more an economical beater under 6 lbs all day.

Post me up your build thoughts or DM me, please! I’m a bolt gun guy with zero AR build experience.


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What part of SEAK are you out of?
 
In other ULUL news. Early on in the thread some guys were talking about 6mm max. Did anyone ever build one?
I have a buddy that just got an upper from sons of liberty and is shooting the 103 eldx 2640 fps.
I do like the 6x45, but I still think if my state didn’t have the 6mm law for some species, I would be all 223. Always curious about the new stuff. I doubt that shooting those slightly heavier bullets with good velocity would make any real world difference, but it might work well with a solo upper….
 
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