Grendel vie six8 recivers

[A5BLASTER]

VASCAR2. I found the guy from the links and his company's website. Sent him an email about designing a follower for testing. Will update when I here back from him.

Fingers crossed.

[VASCAR2]

Thanks for the update A5B.

[A5BLASTER]

Thanks for the update A5B.

No problem. Haveent heard back from him yet. Will see where this goes. Update when I know more.

[A5BLASTER]

Well looks like the custom follower might be a dead end. Have heard back from the gent I contacted through the links and haven't had any luck finding anyone with a 3d printer and cad program.

[hill37]

I don't know any thing about this company. But they may give you some idea of the cost.https://icomold.com/ Looks like tooling is the killer.

[A5BLASTER]

I don't know any thing about this company. But they may give you some idea of the cost.https://icomold.com/ Looks like tooling is the killer.

Yea I only need one or two for testing, so going to a full on company is just not workable.

[A5BLASTER]

Ok so lil update.

Some measurement data for some future loads I will be doing up for this rifle.

Centerfire was nice enough to mail me a 153 A-tip and a 150 SMK to take measurements in my 16 inch AA sammi chambered barrel I used in this build.

Now my windowed SIX8 pmag will let me run handloads as long as 2.360 coal. So here is what I got when I measured each bullet in this chamber and then made dummy rounds to test extraction.

153 A-tip contact to lands measurement
Coal=2.368
Ojive= 1.710
Dummy round set at
Coal=2.358
Ojive=1.700


150 SMK contact to land measurment.
Coal=2.400
Ojive=1.682
Dummy round set at
Coal=2.360
Ojive=1.650

Both dummy rounds locked in fine and extracted fine.

My window mag allows 5 rounds and both of those dummy round lengths are gtg.

Will be a lil while before I get around to doing any of these loads but I plan on useing.

Leverevolution powder
Cci450 primers
Starline cases

Sidenote the 135 atip bullet should be gtg as well in my setup.

The 153 A-tip should make for dang fine hammer of God hunting bullet from my 16 inch barrel at 200 or less yards.

[A5BLASTER]

153 A-tip and 150 SMK side by side.

Going to be some fun with these.

Headshots,neck shots, sheilds, Texas heart shoots. It's going to be allllllllllllll good with these bad boys lmao.

[centerfire]

AA2520, CFE223, H4895, and IMR4895 all look like good options for those bullets. QL predicts the four powders will reach max SAAMI pressure before compressing the load. IMR4895 should have the highest charge volume.

[A5BLASTER]

AA2520, CFE223, H4895, and IMR4895 all look like good options for those bullets. QL predicts the four powders will reach max SAAMI pressure before compressing the load. IMR4895 should have the highest charge volume.

I was thinking leverevolution might work great. I have cfe223 and leverevolution at the moment don't have any of the other powders you listed.

Will give the 153 A-tip a go with cfe223 first then the lever. If it don't work well, I will get some of the other powders you listed to try.

But from what I have seen with the 129/130 weight bullets I have used so far. I think the leverevolution will probably work great.

[A5BLASTER]

AA2520, CFE223, H4895, and IMR4895 all look like good options for those bullets. QL predicts the four powders will reach max SAAMI pressure before compressing the load. IMR4895 should have the highest charge volume.

Sidenote what does quickload give as a min and max charge with cfe223 at the coal length I have listed for the A-tip and cci450 primers?

[centerfire]

Sidenote what does quickload give as a min and max charge with cfe223 at the coal length I have listed for the A-tip and cci450 primers?

[A5BLASTER]

Awesome thanks. I was planning on starting the lever and the cfe223 at 25 grains and working up in my normal fashion of .2 tenth increase, 5 rounds at each charge.

I typically work up like this until I find the velocity spike or dump and then look at my 5 round data under that to find my accuracy node and then adjust the seating depth.

The A-tip from best I could measure is right at 25 thousands less in the case then the smk.

I also was thinking from the 16 inch barrel I would probably end up in the 2150 to 2200 fps range.

Will be fun to try this out. Hopefully before deer season gets here.

[A5BLASTER]

Well bringing this back to life.

Ran into a problem and it's unfixable and kills this setup for me.

The mags work fine with factory ammo. The problem is the rifle will not feed with handloads at all.

The slight increase in case size on the resized cases makes the mag swell just enough that the rifle will not feed from the mags.

Got several loads worked out and can set the gas to lock the bolt back but nothing can get it to strip a second round if running handloads.

So guess I'm going to sell of the six8 recivers and mags. Don't want a rifle that can only run factory ammo.

[Daveycrockett]

Well that's a total bummer! Especially since most of us run hand loads probably. I'm wondering why the difference? How much of a difference is the resized case?