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Ugh! That's an awful feeling. Done it myself.... once. Great way to address the issue. Thanks for your contributions.
6.5SS and the 129 Absolute Hammer
- Thread starter lancetkenyon
- Start date
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264MHC
Well-Known Member
Cool thanks for the info. Be interested to see how high this bullet goes. Based on your velocities with the heavier bullets I would expect close to 3250 with something like a 130 AR hybrid. Be really cool to see it hit the 3400 mark with the Absolute.
lancetkenyon
Well-Known Member
Only shot at 331 today. But had great accuracy results. Great weather for testing this morning too. 37°-49°, almost zero wind until I finished my testing. 1401' elevation, rangefinder showed 27.82 barometric pressure.
Starting velocity was actually higher than I anticipated. End velocity where I hit pressure was close to what I expected. I did shoot a couple of the top end shots in my 20" barrel too. That action seems to show pressure just a bit later than my Lone Peak TI. But not by much. Maybe a grain or two.
I will try a ladder with N565 just to rule out any possible speed increases with a slower burn rate powder. But I was pretty happy with the results. I will be working in the 6/7/8/9 range (55.5-57.0gr) at 3230-3280fps range. Recoil was mild, but definitely felt a bit sharper than the H1000/RL23/N565 loads and heavies I am used to. Just a bit quicker "pop" feeling. I would have LOVED to hit 3400, but didn't happen with the 6.5SS. But even at 3250, makes it a 925 yard deer round where I would be using it.
Again, I am seeing right about a 120fps difference between my 26" & 20" barrels. 20fps/1" is pretty darn good. That has shown in several different loads between my two rifles. From 144s to 156s, and even the 131 Hammer Hunter.
Starting velocity was actually higher than I anticipated. End velocity where I hit pressure was close to what I expected. I did shoot a couple of the top end shots in my 20" barrel too. That action seems to show pressure just a bit later than my Lone Peak TI. But not by much. Maybe a grain or two.
I will try a ladder with N565 just to rule out any possible speed increases with a slower burn rate powder. But I was pretty happy with the results. I will be working in the 6/7/8/9 range (55.5-57.0gr) at 3230-3280fps range. Recoil was mild, but definitely felt a bit sharper than the H1000/RL23/N565 loads and heavies I am used to. Just a bit quicker "pop" feeling. I would have LOVED to hit 3400, but didn't happen with the 6.5SS. But even at 3250, makes it a 925 yard deer round where I would be using it.
Again, I am seeing right about a 120fps difference between my 26" & 20" barrels. 20fps/1" is pretty darn good. That has shown in several different loads between my two rifles. From 144s to 156s, and even the 131 Hammer Hunter.
cjl2010
Well-Known Member
Lance, what is the case fill like at 56gn?
OrionsStar
Well-Known Member
- Joined
- Jul 2, 2012
- Messages
- 169
Exilent intel Lance!
Thanks Much!
Looks like my H4350 may not last as long as I was hoping... LOL!
Thanks Much!
Looks like my H4350 may not last as long as I was hoping... LOL!
lancetkenyon
Well-Known Member
At my seating depth, 63.0 was just starting a compressed load. 62.5gr, you can barely hear the powder moving in the case when you shake it. So 56.0 is about 7gr from 100% case fill, or about 89%.
pickens72
Well-Known Member
been running the new 109AH in a 264wm and a 6.5wsm at 3650 in wm and 3600 in wsm. run up to 3750 in wm! seems to like 3650 the best! gona try to hit 4k with the 90Ah in 257 wby now! these things r fast!
dok7mm
Well-Known Member
Lance, that's a really a great contribution, as usual. I'm paying close attention to this post, as my 24" 6.5 SS pack rifle is a candidate for the 129 AH. For now I'm running the 156 eol at 62.0 gr N-565 @ 3,040.
I had a good visit with Steve today and bought some bullets. Your post is nice concise map for mine w/H-4350. Your work follows the idea that we should use faster powders for top velocities, but I've noted some are sticking with the slower powders and finding good results.
Did a little research on burn rates around H-4350 and found these options I have plenty of:
#123 RL-16
#124 H-4350
#128 Hybrid 100V
#129 StaBALL 6.5
I have lots of Retumbo, RL-26 and N-565, but they are down the list and if it's true, they are probably too slow on the 129 AH. You were going to try N-565, but the chart puts it closer to 570 than 560.
I just wondering what powders are the optimal for the AH in different weights in so many cartridges, haha!
Based only on what I've read, the lighter cartridges are where it's at. Your 2 cents???
I had a good visit with Steve today and bought some bullets. Your post is nice concise map for mine w/H-4350. Your work follows the idea that we should use faster powders for top velocities, but I've noted some are sticking with the slower powders and finding good results.
Did a little research on burn rates around H-4350 and found these options I have plenty of:
#123 RL-16
#124 H-4350
#128 Hybrid 100V
#129 StaBALL 6.5
I have lots of Retumbo, RL-26 and N-565, but they are down the list and if it's true, they are probably too slow on the 129 AH. You were going to try N-565, but the chart puts it closer to 570 than 560.
I just wondering what powders are the optimal for the AH in different weights in so many cartridges, haha!
Based only on what I've read, the lighter cartridges are where it's at. Your 2 cents???
lancetkenyon
Well-Known Member
I have my charge weight test loads ready to shoot this weekend. I will be running them in both my 26", and a few in my 20" as well. Stay tuned.
264MHC
Well-Known Member
Did you ever run the N565 Ladders?
