I am in the process of beginning my experimenting with N160 right now in a .260 Rem.
**6 Creedmoor**
- Thread starter Sportin Wood
- Start date
I am in the process of beginning my experimenting with N160 right now in a .260 Rem.
N160 and N555 have performed very well for me in 6mm Creed. N160 doesn't burn as hot, so it would theoretically slow throat erosion at the cost of velocity, but in some cases I've seen the velocity difference be negligible. For example, I've been shooting 95 VLD TGTs in a 16" AR10 now for a couple of years and 45.3gr of N160 gives me full case fill % and 2900fps. Switching to N555 with the same bullet nets me actually less velocity in this case. But N555 with 109 LRHT or 110 A-Tips in a bolt gun is <chef's kiss>
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Good to know on the 160.
I'm getting ready to start loading for 6 Creed. I have some loads put together with RS Grand... And I have a pound each of N160 and 560 gathering dust. Haven't seen any data for 560 in 6 Creed... But I haven't really looked either. I assumed even if I could use it, it would be rough on the barrel.
26" 7.5 twist barrel... and I don't really care about the velocity. I figure anything 2800+ with 103-112 gr pills will be good enough for my purposes.
Mike
N560 will work with that combo.
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Thanks.N560 will work with that combo.
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After I made that post last night I popped over to the VV site and looked it up.
Their data is for Lapua brass of course... I'm using Hornady for the time being. Not my first choice but it's always in stock locally. Not a big deal, should be easy to adjust. I'm not chasing velocity, just a good accurate load that won't torch the barrel quite as quick.
I might give it a go just to see how it works.
Mike
Just photos with data to provide more info to that 108gr ELD-M / H4350 load. My apologies, I didn't provide much data before.
Starting load, went a bit too conservative but the accuracy was there. Some stickers blew off after the fact in the wind. I also don't think my chronograph was giving velocity errors, I think I was just in a crap node. (5 shot groups only)
Velocity climbing up, but still not what I wanted in ES/SD. Accuracy still as good as I can shoot.
Then I got worried about pressure (zero need), and narrowed the weights. Here's where every group kicked one out. This trend continued until (4) kicked out, and by 41.0 the POI had shifted completely.
So finally back under half-minute, I decided I'd screw with seating depth just a touch.
^ At 2.250 I kicked two out, so there's the outer limit of my depth. The wind was pretty rough too.
Right now, I'm going to load back in the middle of the seating depth range and try a few more at distance to see if they hold up. If they do, I'm calling it done.
41.0 gave me 3,012 FPS.
Starting load, went a bit too conservative but the accuracy was there. Some stickers blew off after the fact in the wind. I also don't think my chronograph was giving velocity errors, I think I was just in a crap node. (5 shot groups only)
Velocity climbing up, but still not what I wanted in ES/SD. Accuracy still as good as I can shoot.
Then I got worried about pressure (zero need), and narrowed the weights. Here's where every group kicked one out. This trend continued until (4) kicked out, and by 41.0 the POI had shifted completely.
So finally back under half-minute, I decided I'd screw with seating depth just a touch.
^ At 2.250 I kicked two out, so there's the outer limit of my depth. The wind was pretty rough too.
Right now, I'm going to load back in the middle of the seating depth range and try a few more at distance to see if they hold up. If they do, I'm calling it done.
41.0 gave me 3,012 FPS.
Finally finished the GF's 6cm and am looking at Forster dies. I've got 100 Peterson cases. Does it have a thicker neck wall? Do I need to get a neck sizer with the dies? I'm sure it's much better, but how does it stack up to Hornady once fired brass?
I run Peterson brass in 6CM, .260, and 7-300 PRC.
If you normally full length resize, you won't notice/have any issue with the Peterson brass. If you use a bushing die anyway, you may want to experiment with a size or two until you get the interference fit you're looking for.
In most of my cartridges, I just F/L resize and then mandrel .002 under as a last step in brass prep. To each their own. I run my 6CM Peterson brass through a full length Redding sizing die without issue.
I found that I had to use the biggest mandrel that Area 419 makes for my loading. I used Peterson 6cm to duplicate the FGMM 107 SMK load, and it worked out very well. Seems that they might have a thicker neck...
Peterson brass has thicker necks than Hornady. Mine was .0155 to .0160. My experience with a honed Forster 6CM die was exceptionally poor. Based on your brass selection and questions I'd highly recommend a neck bushing die.
Guess I'll have to stop being a cheap-ass and buy a decent chronograph. My old faithful still works, but it is an optical, and I routinely have to add about 20-25 FPS to match my drop when I go from 100 to 650 (because the chronograph is about 15' from the muzzle).
However, this time it looks like I gained about 40-50 FPS. Trued velocity at 650 on Thursday, and it that puts my load at about 3,060 FPS.
I'll probably never duplicate the initial 5-shot group, but I'm still pretty happy about the follow-up group too. The load comfortably shoots in the .4s up close when I shoot my old man Fudd 5 shot groups.
108gr ELD-M
1xF Peterson brass
CCI 450
41.0gr H4350
2.235 CBTO
26" Bartlein, 1:7.25
However, this time it looks like I gained about 40-50 FPS. Trued velocity at 650 on Thursday, and it that puts my load at about 3,060 FPS.
I'll probably never duplicate the initial 5-shot group, but I'm still pretty happy about the follow-up group too. The load comfortably shoots in the .4s up close when I shoot my old man Fudd 5 shot groups.
108gr ELD-M
1xF Peterson brass
CCI 450
41.0gr H4350
2.235 CBTO
26" Bartlein, 1:7.25
A little gas gun data!
I've been trying H4350, N160, & N555. All 3 shoot well in my gun. The Vihtavouri powders are both outshooting H4350 but not by much & H4350 is winning the velocity consistency war but not by much.
Seekins SP10
22" factory barrel
Starline SRP Brass
CCI450
CBTO 2.200"
108 ELDM
41.5gr N160
Velocity - 20 shot sample
2865.2 fps AVG
43.5 ES
9.9 SD
Dispersion - 20 shot composite group was 0.92". Individual 5 shot groups are typically 0.6" - 0.7".
40.0gr H4350
Velocity - 20 shot sample
2855.0 fps AVG
27.7 ES
5.5 SD
Dispersion - 20 shot composite group was 1.34". Individual 5 shot groups are typically 0.6 - 0.9".
40.5gr N555
Velocity - 20 shot sample
2816.2 fps AVG
24.3 ES
6.4 SD
Dispersion - 20 shot composite group was 1.05". Individual 5 shot groups are typically 0.6 - 0.8".
I feel like all 3 of those are pretty good for a gas gun. I plan to shoot this in some local PRS style matches so I'm not chasing velocity.
I've been trying H4350, N160, & N555. All 3 shoot well in my gun. The Vihtavouri powders are both outshooting H4350 but not by much & H4350 is winning the velocity consistency war but not by much.
Seekins SP10
22" factory barrel
Starline SRP Brass
CCI450
CBTO 2.200"
108 ELDM
41.5gr N160
Velocity - 20 shot sample
2865.2 fps AVG
43.5 ES
9.9 SD
Dispersion - 20 shot composite group was 0.92". Individual 5 shot groups are typically 0.6" - 0.7".
40.0gr H4350
Velocity - 20 shot sample
2855.0 fps AVG
27.7 ES
5.5 SD
Dispersion - 20 shot composite group was 1.34". Individual 5 shot groups are typically 0.6 - 0.9".
40.5gr N555
Velocity - 20 shot sample
2816.2 fps AVG
24.3 ES
6.4 SD
Dispersion - 20 shot composite group was 1.05". Individual 5 shot groups are typically 0.6 - 0.8".
I feel like all 3 of those are pretty good for a gas gun. I plan to shoot this in some local PRS style matches so I'm not chasing velocity.
