Noveske 6ARC throat question

[FatBoy]

I have scoured the internet but cannot find this so I am coming to the Hide to see if anyone else is running a Noveske Afghan 14.5 6 ARC barrel.

Background :

We tested the rifle with 80gr Hornaday and it loads and cycles fine. COAL is 2.250”, base to ogive is 1.70”.

Not wanting to spend $.50+ per bullet I loaded up some Hornaday 105 BTHP, bulk bullets. ($.24 per). At 2.250 COAL the base to Ogive is 1.775” and the bullet jams into the lands hard, forcing a mortaring to extract. Sometimes it pulls out the dummy whole, sometimes it leaves the bullet in the barrel.

In order to get the 105 BTHP to load and manually cycle dummies I have to drop the COAL to 2.20”, with the base to ogive measuring 1.720”.

I have 40 loaded over 28.8gr or Lever and I’m a bit anxious about Sunday.


Question:

Seems like this may be a short throat, likely by design. Is this normal for these barrels? Does Noveske recommend a bullet weight, etc? As this is the factory Hornaday Black bullet and I was thinking ( not thinking, assuming) factory Ami would load.

I’ll hit them up Monday but I’m 12 days away from an DMR match and I’m running out of time to shake this out.

Appreciate the feedback.

Thx,

Chris

 

[Ledzep]

ETA: Never mind, you're hand loading..

Back story since it's still relevant; The 105 factory black ammo was originally released by mistake at 2.250" but had to be shortened to 2.20" to not interfere. Sounds normal. The ogive on the 80's, 108's, 110's, 103's, etc.. is longer and more aggressive and allows for longer COALs without interfering.

 

[FatBoy]

Seems I backed into this same info, but glad to hear this is normal.

That’s what I get for loading without a case gauge. Thats being rectified next week.

I did order 300ct 80s. I may run these side by side and see how they hang out to maybe 750 and what felt recoil is like while unstable. Spotting 105s at 200 was hit or miss off a light schmedium. (1-8 NX8 that day) Has a touch more pop than a 77gr 5.56, so I’m gonna have to get my ass to work building quick structure …

Thank you. I really appreciate the help.

Chris

Edit:

Builds initial setuo seems fairly balanced. I was concerned this 3.5-15 F1 was going to be too heavy but it seems it’s going to handle well, even with the heavy can out front. (Really would I like a lighter , shorter can with Surefire hub, maybe a B&T Ti). Had to pick up a 10mm riser for the red dot. Will zero and hopefully get dope to 600 this Sunday.