28 Yukon

[steadyrest1]

180 JLK'S 3180fps

 

[steadyrest1]

There is brass available that is much easier to make 28 Yukon brass from.Left is 26 Nosler brass,necked up,right is 28 Yukon formed and fired.When 28 Nosler brass becomes available (I'm told next month ) it will be even easier. I have 5 firings on brass i've been testing with without any issues.zero rejected. Neck length should benefit barrel life.The testing so far Indicates that H1000 is a little fast, for heavy bullets at least.IMR 7977 has not been tested thus far,but i suspect it will be on the fast side as well.Ramshot magnum shot well,slightly larger E.S. than Retumbo. Have not chronographed for 30rnds but expect to be at 3200 +/- at accuracy load.

 

[Shooter264]

Update on Yukon, bbl now has 160 rounds through it and averaging 3221 with a 180 JLK. Performance is awesome with groups averaging .400" but have a few sub .280". The thing is a dream to shoot

 

[CJ6]

Performance gain over Dakota and much needed longer neck than the 28 Nozler.

At 97+ grain capacity what "documented" advantage is attributable to neck length VS other cartridges with this (or close to this + or - 5% capacity) capacity IE barrel life or throat erosion ? This is a HIGH CAP (overbore). 7 MM after all (between the 7 STW and 7 RUM). I own both the 7 STW and a 7mm Imperial (NASS), in a hunting scenario (lifetime) say 25 Elk hunts, a doz. bears and 70 or so deer (muley, white tail) can you prove this (your) cartridge will make a difference over what I allready have?

 

[steadyrest1]

As far as neck length increasing barrel life, there are many documented findings that prove neck length increases barrel life of a given cartridge all else being equal.Just Google neck lenth vs barrel life. The 7wsm vs the 7SAUM the 6XC VS 243 are but a couple examples. This cartridge is correct dimensionally to run 180's in a Remington long action without mag box modification and seat bullets bearing surface ahead of the neck shoulder junction, unlike the STW. The E.S. of this cartridge have been considerably Lower as well .Due undoubtedly to it being nearly .300" shorter than The STW. The 35°shoulder will reduce brass flow also."Short and fat is where it's at". Will this make your targeted quarry any more dead,probably not... But so far it has reached my expectations and exceeded them.

 

[steadyrest1]

28 Yukon #2
Defiance action, Brux barrel,McMillan Gamescout edge stock and Nightforce optics Performs similar to #1 velocities similar with 180's as well (3220-3230 fps).This barrel appears to be a little slower than #1 with equal powder charges.Time will tell as #2 has fewer rounds through it as well.

 

[Shooter264]

It's just not as pretty as #1 and the bolts on the wrong side too!!!

 

[steadyrest1]

Only for 94% of general public.

 

[steadyrest1]

#4 Yukon on Weatherby Mark V is nearing completion. Feeding was a question,however testing has shown no problems thus far.Will post accuracy results as project progresses.

 

[cdparker]

I have been watching this thread since it's beginning and find it interesting. I developed a cartridge on the .284 case with a sharp shoulder and a long neck to get better barrel life. I started out with a 6.5 but to get better wind bucking, I made it a 7mm. My cartridge is intended for F-open. So, just for fun, I opened my Night Force program. Assuming that the Yukon would be used for hunting, I plugged in some numbers for comparison. I used a 200 yard zero and asked for drop at 500 yards in minutes. (1.047"). For a bullet, I used the 175 gr. Nosler partition spritzer. So, 1 minute will equal 5.24" Here is what I got.
2900 f/s--7.75 min.
3000 f/s--7.00 min.
3100 f/s--6.5 min.
3150 f/s--6.25 min.
3200 f/s--6.25 min. I double checked that one.
3250 f/s--6.0 min.
3300 f/s.--5.75 min.
So, the difference in velocity from 2900f/s to 3300 f/s comes to 2 moa. or 10.48".
No hunter would shoot at an animal at 300 yards or beyond without the use of a range finder, especially across a canyon of from ridge line to ridge line, where you can not even estimate football fields etc. Now, if your scope has hold over points or if you are clicking your scope, you have to make allowance for the bullet drop. Not figuring in slope and other ballistic elements which you would do for any of the velocities given.
I'm not criticizing anything. I'm just putting this out as a comparison to consider.
Craig

 

[steadyrest1]

Craig,
I am a little slow on the uptake,but i missed your point.Anyone shooting at game beyond point blank yardage owes it to the animal to take atmospheric conditions into consideration as well as ballistics of the combination they intend to use before attempting any "long" shots on a game animal. they should practice a great deal in field conditions beyond what they will consider their comfortable maximum yardage to take a shot on an animal.The following chart is based on the bullets we are shooting in the Yukon and have proven on Game at extended yardages.

 

[steadyrest1]

Craig,
Here are the numbers using your 175gr nosler partition @ 2900fps and their published B.C.. All atmospheric contitions are identical to chart for the Yukon.As you can see there is a very large difference in drop as well as impact energy and wind drift(not shown) between it and the Yukon.Not sure if this was your point but,i believe the two cartridges are apples and oranges.I'm not saying i would send the 284 packing as it is a proven cartridge for your intended application.

 

[cdparker]

steadyrest.- my mentioning of my .284 has nothing to do with your efforts. I just wanted you to know that I too had played around with a long necked cartridge in an attempt to get longer barrel life out of a cartridge.
What I was trying to show was what the difference in velocity did to the drop of a bullet(7mm 175 Nosler partition) when zeroed at 200 yards and fired at a distance of 500 yards. My measurements are from my NightForce program expressed in minutes of angle. I did NOT make any judgment or try to make a point that was complimentary or contrary to your efforts.
For hunting, I preferred using the 7mm 160 gr. Nosler Partition. Over the years I shot more than 50 Caribou with that bullet. It worked extremely well. I used my 7X57 AI. A couple of years ago, I shot a big bull with my .300 WBY. at 292 yards (lasered) using a 180 gr. Barnes triple shock. The bullet went broadside through the lungs. It was like I shot him with a target arrow. It didn't open at all. I had to shoot again to keep him from walking off. I was not impressed. I am going to try the 150gr. TTSX next to see how that works.
Craig

 

[steadyrest1]

28 Yukon #1 @ 350 rounds. 3 shots @100 yds.

 

[rpierce]

cdparker: If you decide to use the 150 gr ttsx make sure you hit them in the shoulder as our experience was the same as your 300 wby. A buddy and I were pushing them 3500+ fps and they would pencil in/out on whitetails if hit behind the shoulder out to 500 yds. Had some run a very long ways before we found them. As soon as they got hit in the shoulder it was lights out. My buddy managed to get 17 deer with 16 shots with the 150 ttsx on the drury outdoors farm a few years ago with that combo. Yep that's right, he had a double when they lined up perfectly behind one another broadside, lol.

 

[swampthang]

been watching this thread unfold since the beginning. dont care what other think, we all are entitled to our own opinions. i SUPPORT your efforts and think your design has some merit. the heavier 7mm are taking alot of trophies home nationwide. i use a 6.5 creedmoor in my 1000 yd ibs light gun and a 300wsm in my heavy gun but you have kept my intrest with the 28 yukon, keep up the good work, i do have one question- although they look very good, and have a "cool "effect. im not a fan of the spiral fluted barrells, i wonder how much better she d shoot with a 30 in straight taper kreiger, would think the barrell vibrations would be better, resulting in better groups but just asking. keep me posted, im intrested.

 

[Shooter264]

been watching this thread unfold since the beginning. dont care what other think, we all are entitled to our own opinions. i SUPPORT your efforts and think your design has some merit. the heavier 7mm are taking alot of trophies home nationwide. i use a 6.5 creedmoor in my 1000 yd ibs light gun and a 300wsm in my heavy gun but you have kept my intrest with the 28 yukon, keep up the good work, i do have one question- although they look very good, and have a "cool "effect. im not a fan of the spiral fluted barrells, i wonder how much better she d shoot with a 30 in straight taper kreiger, would think the barrell vibrations would be better, resulting in better groups but just asking. keep me posted, im intrested.

The spirals do look cool for sure but my intended purpose of having this rifle built was for hunting and spiral flutes shave more weight than straight or interrupted flutes. I wanted to keep the rifle around 9lbs. A consistent rig that shoots under half moa 90% of the time works for me. I have no doubt this thing would shoot better with a big tube on it but I'm too lazy to hump the hills with a heavy rifle ;D

All my expectations have been met with this project and I'm really interested in the bbl life. Where I live it's hard to beat 17 moa to get to 1000 with 1860 ft lbs of energy!

 

[Yote Hunter]

I'm very interested in having a barrel chambered for this cartridge to shoot the new 195 gr Berger. Who do I need to talk with about this? Thanks. Shane email: 6.5wsm7868@gmail.com

 

[Norseman]

I am very interested too. I am curious if this cartridge will clean up 7mm Remington Magnum chamber as well as the velocity shooting 168 grain Berger, I have a 1-10 twist barrel.

Please explain the steps to make this cartridge from 26 Nosler and/or 28 Nosler?
I really like long neck cartridges.

Thank you for generous time and research.

 

[Shooter264]

I'm very interested in having a barrel chambered for this cartridge to shoot the new 195 gr Berger. Who do I need to talk with about this? Thanks. Shane email: 6.5wsm7868@gmail.com

Trevor at Cloud Peak Gunworks is who you need to talk to about this cartridge. His email is on his website.