6x45 Load data

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Originally Posted By: CatShooterOriginally Posted By: pcammo

"Step 4: Plate the bullets for 2 hours (1 hour 15 min. for Sierra Blitz), adding approximately 250mg HBN directly to the tumbler."




Why is there a different time for the Sierra BlitzKing??




Sierra and Berger jackets tend to get a nice even coat faster than Nosler or Hornady jackets (in my setup). You also need to really watch the tumbler when you are coating lead tip bullets. If they are getting deformed you either need to stop or add more mass to the tumbler. I should also specify that this is the 80gr. Sierra Blitz (a lead tipped bullet) and not one of the BlitzKings. I have not tried coating any of the BlitzKings....yet.
Thanks,
John
 
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Originally Posted By: MO1What is an HBN coating, and why is it of benefit?

Hexagonal Boron nitride (HBN) is a binary refractory compound that possesses good lubricity and good chemical inertness. It is used in many industrial applications as well as some face powders and other cosmetics. Here we are using it as a way to mitigate copper fouling in high volume shooting conditions. Its application and purpose are very similar to molly coating bullets. I tend to like HBN better than molly simply because it is more chemically inert and cannot generate corrosive sulfides in the barrel under some storage conditions. Like all other bullet coating, it is not safe to assume that pressure will be reduced in a given load when changing from “naked” bullets to coated bullets; especially if you have a high quality smooth barrel to start with. Start low and work up.
John
 
John good to see you back in the neighborhood!
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Oh and I am jealous of you're shooting range too! Must be nice to shoot in the backyard.
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Originally Posted By: eneranchOriginally Posted By: pcammo

Step 4: Plate the bullets for 2 hours (1 hour 15 min. for Sierra Blitz), adding approximately 250mg 7 μm HBN directly to the tumbler.





Please explain what this means.





Sorry, that should have been "adding approx. 250mg of 7 micron HBN..."
 
Originally Posted By: venaticJohn good to see you back in the neighborhood!
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Oh and I am jealous of you're shooting range too! Must be nice to shoot in the backyard.
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It is nice to be back. I am not ever taking a job that far from home again.

It looks like I need to try some CFE 223 in the 6x45.
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Yes you do !

After my little trial with it I ran home and loaded 20 more rounds but have not gotten to try it again on paper or on a critter YET.
 
Anyone know if the CFE 223 is temperature insensitive like the Hodgdon Extreme powders?

I'm interested in trying it in the new 6x45 upper, but I always try to stick solely with the extreme powders because I hunt and shoot between 40 below zero and 80 above, and have had some bad experiences and wild velocity deviation with powders like BLC-2 and other non-extremes.
 
Originally Posted By: MO1Anyone know if the CFE 223 is temperature insensitive like the Hodgdon Extreme powders?

I'm interested in trying it in the new 6x45 upper, but I always try to stick solely with the extreme powders because I hunt and shoot between 40 below zero and 80 above, and have had some bad experiences and wild velocity deviation with powders like BLC-2 and other non-extremes.

No... it is a ball powder and sensitive to temperature changes.
 
CatShooter is correct, I would not expect CFE 223 to be as temp. stable as the extreme powders. I doubt there are enough rounds down range yet with it to say just how sensitive it is. BL-C(2) and H-335 have always been some of the worst offenders in my rifles. X-Terminator seems to not be quite as bad. It looks like we will be in the 50's tomorrow and in the low teens by early monday morning. If I am industrious enough, I will put some ammo and the rifle in the -30 freezer overnight and we will see what happens.
 
Here's some recent 6x45 data:

20" D-tech upper, avg. temp 50 deg, Win once fired brass, CCI 400 primers, seated to mag length of 2.260

bullet, powder, grains, avg. velocity, 4 shot groups, notes
75 grain V-max, H-4895, 25.6, 2726
75 grain V-max, H-4895, 25.8, 2726
75 grain V-max, H-4895, 26.0, 2732
75 grain V-max, H-4895, 26.2, 2777
75 grain V-max, H-4895, 26.4, 2818
75 grain V-max, H-4895, 26.5, 2789, .3", outstanding accuracy and velocity uniformity
75 grain V-max, H-4895, 26.6, 2801, .6"
75 grain V-max, H-4895, 26.7, 2818, .6", primer flattening starting here in some loads, but no cratering in any loads
75 grain V-max, H-4895, 26.8, 2807
75 grain V-max, H-4895, 27.0, 2818
(settled on 26.5 load for the 75 grain V-max)
---------
75 grain V-max, Benchmark, 24.0, 2666
75 grain V-max, Benchmark, 24.2, 2666
75 grain V-max, Benchmark, 24.4, 2732, started seeing slightly flat and cratered primers
75 grain V-max, Benchmark, 24.6, 2666
75 grain V-max, Benchmark, 24.8, 2749
75 grain V-max, Benchmark, 25.0, 2737
75 grain V-max, Benchmark, 25.2, 2760
75 grain V-max, Benchmark, 25.4, 2789
(abandoned Benchmark due to erratic velocity data and primer pressure signs)



Load data on 85 grain Sierra Gamemaster HPBT to follow in a week or so.
 
Thanks to everyone for all the 6x45 info here. I am (impatiently) waiting on a 6x45 barrel from Lothar Walther jump into this caliber as well. Looks like a winner.
 
First thanks to everyone who contributed to data I found here. What a wealth of info. By far the best I have found on the web.

I put together an upper with a 20" stainless Midway\Stoner barrel (6x45) 1-8 twist. The upper shoots great (1" or less/ w 4x Nikon) providing I use bullets of 75 grains or less. I would have thought with this twist rate I could stabilize at least the 87 or 90 gainers but that has not been the case. The groups for these "heavier" rounds open up to 3 or 4 inches. I wonder if other members using Ar style uppers in 6x45 have had similar results. If you have been successful with heavier bullets in a similar upper what recipe/combination was used? Thanks Bob
 
Just shot my new 6x45 today. It is also a 1 in 8 twist but 24 inches. Only tried one load just to see how it ran. I loaded 87 grain v-maxes with h4895 and shot two groups at around 3/4 inch at 100 yards. One was 5 shots and the second was 4 shots as that was all the rounds I had left. This was shot prone over my buddies tool bag in his field. Very happy with it. I am sure off of a bench with a real rest I could have shrunk the groups in half. As far as the previous poster goes I had no problems stabilizing the 87 grain bullets.
 
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What velocity / load are you getting with the 4895. Perhaps I am not slinging them fast enough.
 
Didn't bring chrono. Buddy called me last minute to see if I wanted to go to his land to set up his camper with a little shooting after. Loaded 25.3 gr of H4895. From load data I have seen it should be somewhere around 2700. No pressure signs at all primers still had rounded edges. Could definately go higher and I might try that next time if I am able to fit more powder in the case. Load was definately compressed but I was very happy with the groups for the first load from the barrel. Good luck with getting yours to stabilize the 87's. I wouldn't think there should be any problems with a 1 in 8 stabilizing them. Maybe you just need a new powder or charge to get them to shoot.
 
Well I went out to the range yesterday and had some interesting results.

The 58 gr VMax with 26.5 Varget averaged 2651 fps and the 75 gr VMax with the same 26.5 Varget averaged 2745 fps. I would have thought the heavier bullet would have been slower. This leads me to think Varget might be a bit slow burning for the lighter 58 grainers. Although, I think I may want to stay with the Varget since despite my shooting ability they are all trying to fly in the same hole. Next I'll work up some 87g VMax loads with 4895 and Varget and see what happens.

Well... I think what I really need is another upper with a 24 inch barrel.
 
My most recent loads & speeds.
My Savage 6x45 build, 24" McGowan ss bbl, 1/10" twist.
Average FPS of 10 shots each.
58g V max, 26.1G Ex-Terminator, 2.280" col....3214 FPS
58g Z max, 26.1g Ex-Terminator, 2.280" col....3238
65g Vmax, 24.2g AA2015, 2.280" col,...........3067
65g Vmax, 24.4g AA2015, 2.280" col............3025
70g NBT, 24g AA2015, 2.280" col...............2907
80g Speer, 24.4g AA2015, 2.280" col...........2914
80g Speer, 27.6g W748, 2.280" col.............2941
80g Speer, 27.5g BLC2, 2.280" col.............2826
80g Speer, 26.2g H335, 2.280" col.............2926
87g Vmax, 25g H335, 2.280" col................2915
87g Vmax, 27g BLC2, 2.280" col................2792
87g Vmax, 26.5 Varget, 2.280"col..............3002
95g NBT hunting, 24.3 H335, 2.280" col........2718
95g NBT Hunting, 26.7 BLC2, 2.280"col.........2652

The 58g Z&V max, 65g Vmax & 70g NBT are SUPER coyote loads. The 95g NBT & H335 is perfect on Antelope!
 
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