Neck turning... just because

[MarikinaMan]

Ive got most of the gear I need to get pretty good and consistency ammo. I am able to create loads within 7-9 SD.

All my buds have moved on to bolt guns with fancy cartridges, but I am just not ready to make that sorta commitment.

To keep up, and attempt to get my AR to 1000 yards, I started neck turning. You'll note below that I havent turned them a lot. Starting with baby steps to clear up the high spots.

Here are the first 10. Eagerly awaiting to see how they group over my standard reloads. Will be putting up paper at 300 to compare them both.

[milotrain]

To keep up, and attempt to get my AR to 1000 yards, I started neck turning.

What's your load for 1k? Not baiting, actually interested.

[MarikinaMan]

What's your load for 1k? Not baiting, actually interested.

It's in development. I have a good amount of 75gr Hornady BTHPs and Nosler 69s to play with, but I have my eye on Berger 77s for the actual attempt. Gonna focus on the processes to get there first.

For powder, I've got Accurate 2520 and Varget stocked up, but am open to trying powders that have been known to work for this purpose. I have an affinity to 2520 because its gives good velocity. I do know that it is temp sensitive, never been a problem.

[highpower790]

It's in development. I have a good amount of 75gr Hornady BTHPs and Nosler 69s to play with, but I have my eye on Berger 77s for the actual attempt. Gonna focus on the processes to get there first.

For powder, I've got Accurate 2520 and Varget stocked up, but am open to trying powders that have been known to work for this purpose. I have an affinity to 2520 because its gives good velocity. I do know that it is temp sensitive, never been a problem.

your going to need 80s.

[ElvenSoul]

As common and normal as Annealing.

[eric n]

It's hard to tell by the photo but it appears you may be feeding them a bit fast. If you slow your feed rate a bit, they will come out really smooth.

[MarikinaMan]

It's hard to tell by the photo but it appears you may be feeding them a bit fast. If you slow your feed rate a bit, they will come out really smooth.

Thanks, I turned them by hand as I got the wrong shell holder

I expect them to get better when I get the right one.

[LynnJr]

I agree go slower and ease up on the chamfering as well. All you need to do is remove the burrs.

[MarikinaMan]

I agree go slower and ease up on the chamfering as well. All you need to do is remove the burrs.

There is little room to pull back on the inside chamfering on the 3 way trimming head I am using. I am going to look further into it.

[milotrain]

your going to need 80s.

At least. Some reports of 75gr Amaxes getting there but man I don't want to know the muzzle velocity they have to get to. Do your testing at 600 first, it'll give you plenty of info without the confusion of what isn't working between 600 and 1k.

[jimmykan]

I just ran some JBM and Quickload calculations:

The Hornady 75 BTHP (0.183 G7 BC) would have to start at 3300 fps to stay supersonic to 1000 yards (Standard Atmosphere @ Sea Level).

The Berger 77 BTHP Match Target (0.192 G7 BC) would have to start at 3150 fps to stay supersonic to 1000 yards (Standard Atmosphere @ Sea Level).

Those velocities are a lot to ask for from an AR-15, unless you've got a 36" barrel on it.

But if you can get a Sierra 80 grain MatchKing started at 2900 fps, it will stay supersonic to 1000 yards (Standard Atmosphere @ Sea Level).

If you load the bullet long in a 223 Wylde chamber, 2900 fps is achievable with certain powders and a 24" barrel, maybe even a 20" barrel.

[milotrain]

With the AR I think it's worth using something dumpy and just rolling it across the transonic. I can't imagine anyone is getting 2900fps out of a 20" AR with anything 69gr or heavier. I know Shawn Mckenna did it but he specifically says it's a bad idea.

[highpower790]

With the AR I think it's worth using something dumpy and just rolling it across the transonic. I can't imagine anyone is getting 2900fps out of a 20" AR with anything 69gr or heavier. I know Shawn Mckenna did it but he specifically says it's a bad idea.

I've done it with a Berger 82bthp and 25gr of Varget.Nothing negative resulted,just a few holes in a target.

[bsumoba]

All my buds have moved on to bolt guns with fancy cartridges, but I am just not ready to make that sorta commitment.

Get a RPR

.223 rounds at 1,000 yards is like throwing darts at 50 yards. You may get a few on target, but most will miss.

Unless you're someone like Bob Gill who just hammers away with 90 VLDs. But then again, he is usually a 30"ish barrel and some stout loads.

[MarikinaMan]

Get a RPR

.223 rounds at 1,000 yards is like throwing darts at 50 yards. You may get a few on target, but most will miss.

Unless you're someone like Bob Gill who just hammers away with 90 VLDs. But then again, he is usually a 30"ish barrel and some stout loads.

a few thoughts on the matter
1) it would be fun to do it, despite the difficulty
2) investing in such a rig for an enthusiast whose main interest is defense, seems overly expensive
3) how would a civilian ever justify making such a shot on a live target, mind you, there are a few reasons I can think of, but still unjustified