284 Shehane Minimum Neck Turn

jackie schmidt

jackie schmidt

New member
I am building a 284 Shehane for local Claybird Matches out to 400 yards. The only thing left is the reamer.

The Pacific Tool and Die list the reamer with a .313 neck. I am assuming this requires neck turning. If you take a Lapua 6.5/284 case, neck it up, and seat Berger 180 Hybrid, what does it measure? I want a minimum neck turn, much like my own .269 neck 6PPC that requires just a few thousandths to come off.

What are you Long Range Shooter's thoughts.

I am using a R-L-R Model M Bat 1.470 diameter Multiflat, Shehane Stock, Kieger 1-9 #17 HV barrel, 15x55 Nightforce on 20 degree Picatinny Rail, Jewell Trigger, etc.

This will be a legal NBRSA light gun, just in case.
 
Jackie
Minimum no turn is 0.317 but with the quality (or lack of it) of Lapua brass I would suggest 0.315 and clean up the necks, the wall variation can be as bad as 0.002-3" on some batches.
I also wouldn't go the Shehane the extra work and barrel wear isn't worth the extra case capacity, if you really want an improved case I would suggest going the AI (Walker) version.
Regards
Matt P
 
That seems uncharacteristic for Lapua Brass, as when dealing with 220 Russian to make the 6PPC or the 6BR and 308, wall thickness variation usually is no more tha, .0005 to 001 inch.
 
Since this is my first venture into a true long range Competition Rifle, I decided to go with a standard .284. I ordered a Pacific Precision reamer #eo4f2bb9 with a .313 neck and .250 freebore to shoot the 180 Berger Hybrid. This reamer is dimensioned for Lapua 6.5 284.
 
one of the best f class, and frequent long range br shooters shoots a 284 set up for 180's.
good choice IMHO, but more than you need if 600 is the limit.

jackie schmidt said:
Since this is my first venture into a true long range Competition Rifle, I decided to go with a standard .284. I ordered a Pacific Precision reamer #eo4f2bb9 with a .313 neck and .250 freebore to shoot the 180 Berger Hybrid. This reamer is dimensioned for Lapua 6.5 284.
Click to expand...
 
Jackie
That free bore maybe a little long especially for Hybrids, 0.220 it about the norm for a 180 VLD/Hybrid compromise.
Matt P
 
Matt P said:
Jackie
That free bore maybe a little long especially for Hybrids, 0.220 it about the norm for a 180 VLD/Hybrid compromise.
Matt P
Click to expand...

I have a friend that is shooting a 280 Ackly with a .250, he shoots 180 Hybrids exclusively at just over 2800 FPS. The bullet looks perfect in the neck, the boat tail junction is above the shoulder neck junction.

In all honesty, I haven't even considered the VLD. I'm setting this up to shoot one bullet, the 180 Hybrid.

I got this today.
http://benchrest.com/attachment.php?attachmentid=18445&stc=1&d=1474584294
 

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Jackie,
I would give Bill Shehane a call. Bill knows the 6.5x284 and the 284 better than anyone eles in my opinion.
 
Doug Kennedy said:
Jackie,
I would give Bill Shehane a call. Bill knows the 6.5x284 and the 284 better than anyone eles in my opinion.
Click to expand...


Doug, I consider Bill the authority on this.

He recommended the .250 freebore and the 180 Berger Hybrid.

I decided to go with a regular 284 rather than the Shehane just to keep it simple. While I have a lot of Short Range Benchrest experience, this is my first venture into longer range Benchrest.

Specifically, I am building this Rifle to shoot 400+ yard Claybird Matches, and to have fun with.
 
Good luck with your new rifle Jackie. I have a feeling you will get beet by someone shooting a 6mm Dasher soon after you get it built.?
I still like the bigger cartridges too but I really don't have time to mess with them much anymore because when it's match day I'm probably going to be shooting something made from the BR case.
 
Jay Cutright said:
Good luck with your new rifle Jackie. I have a feeling you will get beet by someone shooting a 6mm Dasher soon after you get it built.?
I still like the bigger cartridges too but I really don't have time to mess with them much anymore because when it's match day I'm probably going to be shooting something made from the BR case.
Click to expand...

If my back ordered 1-8 twist 6mm barrel gets here before my 284 reamer, I will have a long freebore 6BR barrel on first.
 
Most of the 400 yard clay matches here are shot without the benefit of personal wind flags. This places a premium on the wind bucking ability of high bc bullets. Of the thirty or so matches I know of, exactly one has been won with a 6mm. It indeed was a dasher. 6.5 x 284's have dominated but in the last two years, the 7mm's have won a disproportionate number of matches.

joe
 
For what it's worth, Jerry Tierney claimed that 284's shot better with no turn necks. He didn't know why, but claimed every time he tried turning necks, his results weren't as good a no turn.
Of course, I bought a no turn neck from Pacific! The gun shoots great.
 
284 MIN Neck

Sir: I am a 1000 yd BR specialist now using the 284 WIN. I modeled my 284 using Jerry Tierney's shooting experience. The 284 doesn't like a tight neck unlike other BR calibers [this from JT]. Suggest you search the web for Jerry's [RIP] info. I use a .315 neck and my loaded Lapua mic at .313 no turn required. Bullets,powders and primers are all in play as is OAL etc. BE WELL and good shooting! Vr mk
 
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