Reloader 26 in 6.5 creedmoor

[Barrelnut]

Bowfishn, looked thru all of the QL data you have provided, but could not find one for Lapua brass and 135 Bergers. Would appreciate it if you could run the following for me.

6.5 Creedmoor
Lapua Brass
RL26
135 Berger Classic Hunter
CCI BR4 Primer
2.800" COAL
24" Barrel

Thanks.

 

[Bowfishn]

Bowfishn, looked thru all of the QL data you have provided, but could not find one for Lapua brass and 135 Bergers. Would appreciate it if you could run the following for me.

6.5 Creedmoor
Lapua Brass
RL26
135 Berger Classic Hunter
CCI BR4 Primer
2.800" COAL
24" Barrel

Thanks.

Here it is with Lapua brass using H2O of 51.5
You will note that the case will be full before pressures are reached with the default burn rate ba. My lot I am running now would give
106 % fill 48.20 gr 2982 fps 2666 Ft lbs 60341 psi
and my previous lot would give
105 % fill 47.80 gr 2997 fps 2692 Ft lbs 62176 psi
so keep an eye on the velocity.

Cartridge : 6.5 Creedmoor Hornady
Bullet : .264, 135, Berger Classic Hunt G1 #26571
Useable Case Capaci: 45.776 grain H2O = 2.972 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-26

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.413% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-04.1 102 46.40 2815 2376 49188 10773 99.5 1.273
-03.7 103 46.60 2829 2399 49978 10798 99.6 1.264
-03.3 103 46.80 2843 2423 50782 10822 99.7 1.255
-02.9 104 47.00 2857 2446 51603 10845 99.7 1.245
-02.5 104 47.20 2871 2470 52439 10866 99.8 1.236
-02.1 104 47.40 2884 2494 53291 10886 99.8 1.227
-01.7 105 47.60 2898 2518 54160 10904 99.9 1.218 ! Near Maximum !
-01.2 105 47.80 2912 2542 55046 10921 99.9 1.209 ! Near Maximum !
-00.8 106 48.00 2926 2566 55948 10937 100.0 1.200 ! Near Maximum !
-00.4 106 48.20 2939 2590 56869 10951 100.0 1.192 ! Near Maximum !
+00.0 107 48.40 2953 2614 57808 10963 100.0 1.183 ! Near Maximum !
+00.4 107 48.60 2967 2639 58766 10974 100.0 1.175 ! Near Maximum !
+00.8 108 48.80 2981 2663 59744 10984 100.0 1.166 ! Near Maximum !
+01.2 108 49.00 2994 2687 60739 10993 100.0 1.157 ! Near Maximum !
+01.7 108 49.20 3008 2712 61756 11002 100.0 1.149 ! Near Maximum !
+02.1 109 49.40 3021 2737 62796 11011 100.0 1.140 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 107 48.40 3100 2882 73633 10384 100.0 1.079 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 107 48.40 2727 2230 45213 11048 95.5 1.320

 

[Barrelnut]

Thankyou. I will provide some feedback.

 

[Canhunter35]

Bowfishn, looked thru all of the QL data you have provided, but could not find one for Lapua brass and 135 Bergers. Would appreciate it if you could run the following for me.

6.5 Creedmoor
Lapua Brass
RL26
135 Berger Classic Hunter
CCI BR4 Primer
2.800" COAL
24" Barrel

Thanks.

I'm curious why you chose the 135 classic hunter?

 

[Barrelnut]

I'm curious why you chose the 135 classic hunter?

Cause I could find them.
Have some 140 VLDs but use those in another rifle and don't want to shoot em up trying a new load...
Plus, Berger actually has a load for RL26 and the 135.
Also, thought they might give me a little more case room. The Base to Ogive for the 140 is .758. The 135 hunter is only .716

 

[Barrelnut]

Here it is with Lapua brass using H2O of 51.5
You will note that the case will be full before pressures are reached with the default burn rate ba. My lot I am running now would give
106 % fill 48.20 gr 2982 fps 2666 Ft lbs 60341 psi
and my previous lot would give
105 % fill 47.80 gr 2997 fps 2692 Ft lbs 62176 psi
so keep an eye on the velocity.

Cartridge : 6.5 Creedmoor Hornady
Bullet : .264, 135, Berger Classic Hunt G1 #26571
Useable Case Capaci: 45.776 grain H2O = 2.972 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-26

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.413% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-04.1 102 46.40 2815 2376 49188 10773 99.5 1.273
-03.7 103 46.60 2829 2399 49978 10798 99.6 1.264
-03.3 103 46.80 2843 2423 50782 10822 99.7 1.255
-02.9 104 47.00 2857 2446 51603 10845 99.7 1.245
-02.5 104 47.20 2871 2470 52439 10866 99.8 1.236
-02.1 104 47.40 2884 2494 53291 10886 99.8 1.227
-01.7 105 47.60 2898 2518 54160 10904 99.9 1.218 ! Near Maximum !
-01.2 105 47.80 2912 2542 55046 10921 99.9 1.209 ! Near Maximum !
-00.8 106 48.00 2926 2566 55948 10937 100.0 1.200 ! Near Maximum !
-00.4 106 48.20 2939 2590 56869 10951 100.0 1.192 ! Near Maximum !
+00.0 107 48.40 2953 2614 57808 10963 100.0 1.183 ! Near Maximum !
+00.4 107 48.60 2967 2639 58766 10974 100.0 1.175 ! Near Maximum !
+00.8 108 48.80 2981 2663 59744 10984 100.0 1.166 ! Near Maximum !
+01.2 108 49.00 2994 2687 60739 10993 100.0 1.157 ! Near Maximum !
+01.7 108 49.20 3008 2712 61756 11002 100.0 1.149 ! Near Maximum !
+02.1 109 49.40 3021 2737 62796 11011 100.0 1.140 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 107 48.40 3100 2882 73633 10384 100.0 1.079 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 107 48.40 2727 2230 45213 11048 95.5 1.320

Wow. Did a ladder from 46.8 Gr. to 49.0 Gr. with the data above provided by Bowfishn. The results were surprisingly close. I may have a node in there somewhere but my SD numbers were way to big to really determine. Need to fix that...
But here's the numbers I got with a new 24" barrel, new Lapua brass, BR4 primers, RL26, and 135 Bergers. Magnetospeed Sporter.

46.8 - 2862
47.0 - 2842
47.2 - 2863
47.4 - 2884
47.6 - 2882
47.8 - 2902
48.0 - 2904
48.2 - 2940
48.4 - err
48.6 - 2974
48.8 - 2957
49.0 - 3022

49 gr was halfway up the neck. I had to use a drop-tube AND electric toothbrush to get it in there to where I could seat the bullet....

 

[codyadams]

Wow. Did a ladder from 46.8 Gr. to 49.0 Gr. with the data above provided by Bowfishn. The results were surprisingly close. I may have a node in there somewhere but my SD numbers were way to big to really determine. Need to fix that...
But here's the numbers I got with a new 24" barrel, new Lapua brass, BR4 primers, RL26, and 135 Bergers. Magnetospeed Sporter.

46.8 - 2862
47.0 - 2842
47.2 - 2863
47.4 - 2884
47.6 - 2882
47.8 - 2902
48.0 - 2904
48.2 - 2940
48.4 - err
48.6 - 2974
48.8 - 2957
49.0 - 3022

49 gr was halfway up the neck. I had to use a drop-tube AND electric toothbrush to get it in there to where I could seat the bullet....

Looks like a node hanging out in the 2880-2900 range....

 

[DBoone]

I may have a node in there somewhere but my SD numbers were way to big to really determine.

How many shots at each load did you do?

I'm working my way up into the low 49 grain loads with the 135 Berger's also. I've had single digit SD's with a large rifle primer (Rem 9 1/2M and Fed 210). My sweet spot was starting to show at 49.3 and between 2950 and 2970 fps depending on primer. Changed batches of powder and I lost almost 50 fps on that load and my SD's grew. I'll try working my way up again.

I agree with cody's assessment of your numbers also. Working that area should get you some good SD's.

 

[Walker2713]

Barrelnut:

I'd just rec'd some of the 135 Bergers, so when I was out yesterday I loaded up 5 each at 48, 48.5, 49.0 and 49.5. Because of other factors I didn't get around to shooting the 49.5gr batch.

FYI, my 48.0 avg velocity was 2840 with an SD of 27.4 and the 48.5 was 2935 with an SD of 16.2. The groups were so-so....a little over 1 MOA.

I"m curious about what kind of accuracy you were getting.

I've got a 300 yard bench rest match tomorrow, and I'm going to go with an earlier developed load with H4350 and Berger 140gr Hybrids.

I haven't lost interest in the 135 Bergers and RL26....just need to spend more time, and work with COAL.

George

 

[codyadams]

Barrelnut:

I'd just rec'd some of the 135 Bergers, so when I was out yesterday I loaded up 5 each at 48, 48.5, 49.0 and 49.5. Because of other factors I didn't get around to shooting the 49.5gr batch.

FYI, my 48.0 avg velocity was 2840 with an SD of 27.4 and the 48.5 was 2935 with an SD of 16.2. The groups were so-so....a little over 1 MOA.

I"m curious about what kind of accuracy you were getting.

I've got a 300 yard bench rest match tomorrow, and I'm going to go with an earlier developed load with H4350 and Berger 140gr Hybrids.

I haven't lost interest in the 135 Bergers and RL26....just need to spend more time, and work with COAL.

George

Have you tried small rifle magnum primers? That would be my next step in your shoes. I have some Peterson small rifle primer .260 brass coming to use in my .260 AI, and with how slow of a powder Reloder 26 is, it may neccessitate a magnum primer in the small rifle variance to get lower SD numbers.

 

[Walker2713]

This was SP Peterson new brass, and I used BR4's. Normally I"ve been using CC450's....I have a lot of them and use them in 6BRX as well. I'll definitely try them next time, and I also have a good supply of Rem 7 1/2 BR's as well. I've found them to be an excellent option.

I've got 200 pcs of Lapua SP and 200 of the Petersons to work with.

 

[Barrelnut]

Barrelnut:

I'd just rec'd some of the 135 Bergers, so when I was out yesterday I loaded up 5 each at 48, 48.5, 49.0 and 49.5. Because of other factors I didn't get around to shooting the 49.5gr batch.

FYI, my 48.0 avg velocity was 2840 with an SD of 27.4 and the 48.5 was 2935 with an SD of 16.2. The groups were so-so....a little over 1 MOA.

I"m curious about what kind of accuracy you were getting.

I've got a 300 yard bench rest match tomorrow, and I'm going to go with an earlier developed load with H4350 and Berger 140gr Hybrids.

I haven't lost interest in the 135 Bergers and RL26....just need to spend more time, and work with COAL.

George

I had HIGH SD as well. SD was 17 fps across 15 rounds of 46.8 Gr RL26 in the Lapua brass and the BR4 primers. Accuracy was also just so,so and 1 MOA as well...

Also, think the issue is the slow powder along with the small primer AND extra small flash hole in the Lapua brass.

Believe you and Cody are right about trying the CC450s above. My issue is I cannot find any in town. I'm gonna try some Hornady brass and F210Ms to see what I can get.

Also, In this thread or another thread (not sure) a guy had to use F215Ms with Hornady brass to get good SD and accuracy. I'm gonna try this combo too.

 

[Barrelnut]

How many shots at each load did you do?

I'm working my way up into the low 49 grain loads with the 135 Berger's also. I've had single digit SD's with a large rifle primer (Rem 9 1/2M and Fed 210). My sweet spot was starting to show at 49.3 and between 2950 and 2970 fps depending on primer. Changed batches of powder and I lost almost 50 fps on that load and my SD's grew. I'll try working my way up again.

I agree with cody's assessment of your numbers also. Working that area should get you some good SD's.

D,

I had high SD of 17 across 15 rounds of 46.8 Gr. RL26. I shot this as part of a break-in and fouling. Think my problem is using the Lapua brass with the small primer pocket and a CCI BR4 primer.

Thanks for your load report. It's encouraging. I'm gonna try Hornady brass with F210M next. I might even try some 215Ms.

 

[Santiam338]

I wasn't having the luck with 26 that I am seeing here...Careful with the mag primers though...I was working on a load with 48 grains 26,Hornady brass and Fed large rifle primers..143 ELD-X's...

Looked promising so I switched out to mag primers thinking I was still under pressure and blew a primer first shot...Pulled the bullets in the rest.. My fault for not working up after changing primers...Didn't think that would happen though..

Never did find anything with 26 that I liked better than 17...

I guess if I want to shoot 6.5 bullets fast I will just break out the 260ai..