First Peek at the 22-NXS!!

The wind blew me out this AM for range time. Hopefully next Wednesday. I have lots of stuff to test.
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I even went down and picked up a new complete 6.8 BCG from Young Manufacturing this AM for this.

Greg
 
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He hasn't told me about testing them.

Greg

AD: I chatted with Ritch and he intends to shoot the 62's with the new chamber when it comes in. He has shortened the free bore up a bit so we can get closer to the lands at mag length of 2.300

I did talk with the reamer maker/owner and his Girl Friday directly Thursday and the reamer should be out in about two weeks. As soon as the reamer hits Ritch will get a barrel done in about 48 hours and shipped to him. One that happens it's off to the desert and testing. It will be interesting to see how the shorter chamber will compare with the original. I'll be doing most of the long chamber testing though I'm shooting for a new chamber tube around X-mas as sonn as I get an extra stripped upper to build on.

 
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Originally Posted By: GLShooterHe hasn't told me about testing them.

Greg

AD: I chatted with Ritch and he intends to shoot the 62's with the new chamber when it comes in. He has shortened the free bore up a bit so we can get closer to the lands at mag length of 2.300

I did talk with the reamer maker/owner and his Girl Friday directly Thursday and the reamer should be out in about two weeks. As soon as the reamer hits Ritch will get a barrel done in about 48 hours and shipped to him. One that happens it's off to the desert and testing. It will be interesting to see how the shorter chamber will compare with the original. I'll be doing most of the long chamber testing though I'm shooting for a new chamber tube around X-mas as sonn as I get an extra stripped upper to build on.



Thanks for the update. Bonus time can't get here soon enough. Going to have R spin me up a 20" lightweight upper with the new chamber. Gettin' itchy!!
 
Originally Posted By: HcboyWhat grain are those nosler bt’s?

55's

I loaded Nosler BT 55's, Sierra GK 65's, Sierra 69 SMK, Nolser 77 CC and Sierra 90 SMK. The 90's were to see how bad they tumbled. If this stabilizes them I'll have a stroke. It's only an 8 twist but the box was laying there so..LOL I suspect with a 1:7 I might cheat and get it done but this round isn't going to be shot at 1000 yards and it dang sure would not be any magazine length. Windowed maybe but not unmolested magazines.

Greg
 
Greg;

Every morning I get up, make coffee, then race over to my computer, hoping to see an update to this thread. And this morning what do I see? Sweet Baby Jesus..........there's an update! Updates aren't a matter of life or death; IT'S MORE IMPORTANT THAN THAT!!!

Are all of your test loads seated to the same depth relative to the ogive/ lands?

C'mon Wednesday! C'mon Wednesday! Your test report will make for some very good reading.

 
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Originally Posted By: KahunerGreg;

Every morning I get up, make coffee, then race over to my computer, hoping to see an update to this thread. And this morning what do I see? Sweet Baby Jesus..........there's an update! Updates aren't a matter of life or death; IT'S MORE IMPORTANT THAN THAT!!!

Are all of your test loads seated to the same depth relative to the ogive/ lands?

C'mon Wednesday! C'mon Wednesday! Your test report will make for some very good reading.



Actually if one adheres to a MAX COL as in 2.300 as several of these are loaded to you can't remain constant to the distance to lands. The 55 Nolser BT and a 65 GK have totally different ogive placement/shape and while the 65 is closer generally I just picked a length to get some numbers for velocity/pressure and was not going for ultimate accuracy. I'm just going for a quick peek into the future on these. Also as the free bore on this one is pretty big I really couldn't get out there unless I went to a windowed mag on some of them. The new chamber will give us much better opportunities.

Bullet design is huge in all these wildcats. I mentioned that I loaded some 90 SMK's for grins and they are seated at 2.460 and are stil not on the lands. Long pointy bullets have a terrible time in that area. I have a lower designed by Ritch that will let me load very long but it still wouldn't do it on this one.

The 55 Noslers OOTH will reach the lands at 2.39, the 55 Speer TNT at 2.426, the 69 SMK at 2.370. I can use an AC mag and load to 2.314 nominal and get closer but on some bullets you will run out of base in the neck.

Ritch knew it was going to be long when he did this proof in concept trial. He's pulled the free bore in considerably to help. Merely changing the lead angle cut 0.009 out of the long chamber. Thanks to the lead times of the reamer guys and the barrel makers none of this is happening as fast as we would all like. Faster the most but still seems agonizingly slow. Also there is that stuff called folding green that enters in to the equation.

Ritch and I network with a great deal of suppliers and have been moderately successful in bring things to the market for everyone. He's brought on over half a dozen wildcats available from barrel suppliers and I've been helpful in bringing a whole new line of stronger bolts to the market. We're plugging away and don't see any end in sight.

I'm as excited as anyone to get some more results. I'm also excited to see what the new chamber will do. Luckily for us .224 sized bullets don't mind the jump as much as some 6 MM's out there and we are squeaking along with the long throats. They may well really be barn burners once we get up tight on these.

Greg
 
Nice reply. Full of good info. Some questions though.

Is there a disadvantage to cutting the mag to accept longer loads?

Is the barrel you're testing now have the .009" cut in the lead?

The 2 bullets I'm most interested in shooting are the 55 & 65 gr Gameking Sierra's. If I load either of those 2 bullets (for the existing chamber you have now) would I be able to achieve a .025" jump? I know the new reamer will be different. I'm asking about the barrel you have now.
 
Originally Posted By: KahunerNice reply. Full of good info. Some questions though.

Is there a disadvantage to cutting the mag to accept longer loads?

Is the barrel you're testing now have the .009" cut in the lead?

The 2 bullets I'm most interested in shooting are the 55 & 65 gr Gameking Sierra's. If I load either of those 2 bullets (for the existing chamber you have now) would I be able to achieve a .025" jump? I know the new reamer will be different. I'm asking about the barrel you have now.

No disadvantage to cutting the magazine except you can only around 6-7 depending on the chambering and if you are of the mag dump persuasion that just won't do.

The barrel I have is just like Ritch's. The 0.009 will be pulled out of the new chamber as will a whole bunch more to get the free bore down. My guess it will be well over 0.055 or more shorter.

Based on a quick check using just a formed case that has not been fired and the use of a windowed mag you probably could get within 0.025 of the lands with the 65. I don't have any 55's to check.

Let's see if I get anything to scream about this week before you fire up the Dremel and start cutting the front out of a magazine. Remember I'm looking at speed and pressures but gosh knows I'm gonna buckle down and give it a few good trigger squeezes or else I wouldn't have made up this dozen target sheets..LOL Based on that random slow group I shot with the 55's lats week at 50 yards I thing there is a potential here to celebrate.

Greg

AD: I didn't post up the target I shot last week getting my scope set up for testing. I was at the range for a swap meet and just brought a few rounds. This was shot AT FIFTY YARDS to get dialed in. Total of four shots here. The top shot was shot #2 after moving the POI about a foot from my cold bore. It and the first CB shot were just laid across a wooden block. After the first two I folded up a gun case and threw it across the blocks.and shot the bottom three using a squeeze bag on the butt. I think it shows some potential.

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I try. 39 groups. 39 files to transfer to spreadsheets and label each group. It takes a while. Plus evaluating the cases. It'll be worth it.

Greg
 
Huckleberr75, I was thinking the same thing.

This reminds me of me telling my wife when asked when I'm be home, I'd always say: "I'll be home early."

Now if I came home at 6 PM; that'd be early. If I came home at 11 PM; that'd be early. And if I came home at 4 AM, that'd be early too.

After several years she caught-on, and would ask for clarification. "Are we talking the 1st, 2nd or 3rd early?"

So Greg, could you define soon? I haven't got this kind of time! I'm not even buying green bananas!!


 
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Dang guys.
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I like to post a story and pics but here's the nitty gritty. 55 Nolser BT,65 Game King,69 SMK,77 Nolser CC,90 SMK were shot. Conditions were varying winds and temps were 45-63.

I used 8208,H4895,AA 2520,AA 4064,RL15 Big Game, H380, CFE All 450 primers. All freshly formed cases from Hornady Hagar. 8 twist Tactical Ordnance 5 polygon 24"

Speeds max at :55- 3754; 65- 3532; 69- 3282; 77- 3180; 90- 2753 All through a LabRadar.

Primers were all nice and round except those with 2520 and they were just a little flat. Across the board I found that I was not at the top on most. Ejector coining was virtually nonexistent. No extractor damage to any rims. The 69's are certainly lower than they can be.

This was a test for pressure and speed mostly with groups to see what tantalizes me. Not all bullets got three powders but each powder got three levels. Across the board only one combination failed to give me sub-MOA on the groupings. The best group shot was a 0.381 with the 77, a couple 5's and many 6-7's. I shot three groups with the 90's and had to laugh. They should not stabilize but they flew nice and had no tipping. This is not a magazine bullet and are used at long range single shot so they were loaded out to 2.460.

Just studying the powder charts for a SWAG at charge weights and deciding on mostly 2.300 seating depth except on the 90's as mentioned above I feel the first test was a success. Ideally I would not be switching from powder to powder during the testing as this imparts some unpredictability in groupings same as change bullet jacket material. The component swapping was why I was not overly concerned with getting the ultimate accuracy.

The new chamber will be considerably shorter and based on what I did Ritch I are very excited to see what will happen. We suspect that it will tighten things up even more.

No coffee yet so this is probably rough. I'll write a bit more later with more explanations.

Greg
 
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