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Joined: Feb 2013
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Campfire Greenhorn
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Campfire Greenhorn
Joined: Feb 2013
Posts: 47 |
Hey guys, what kind of velocity should I be getting with my .260? Here are the stats...
24" 8 twist hart barrel
45.6 gr H4831sc
130gr accubond
Fed 210M/Lap brass
I'm getting great accuracy with this load but I'm only getting 2700fps using my magnetospeed. I have no pressure signs at 45.6gr but accuracy goes downhill pretty fast if I increase the load charge. So I guess my question is, if thats all the speed Im gonna be able to get with this load, am I leaving alot on the table or does the fps sound about right for a 260rem and 130gr bullets.
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Joined: Jan 2003
Posts: 10,989 Likes: 2
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2003
Posts: 10,989 Likes: 2 |
I am interested in what answer you get. I load 140's with same powder at 44.5grain. It mates with the Gameking for stellar results on game but I have only guessed at velocities from my factory 22" barrel. I am just curious asd I don't plan on changing it.
I also load 120 Prohunters for longer distances but in limited samplings so far feel more confident with the heavier Gameking.
When a country is well governed, poverty and a mean condition are something to be ashamed of. When a country is ill governed, riches and honors are something to be ashamed of
. Confucius
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Joined: Jun 2004
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2004
Posts: 44,905 Likes: 13 |
Hey guys, what kind of velocity should I be getting with my .260? Here are the stats...
24" 8 twist hart barrel
45.6 gr H4831sc
130gr accubond
Fed 210M/Lap brass
I'm getting great accuracy with this load but I'm only getting 2700fps using my magnetospeed. I have no pressure signs at 45.6gr but accuracy goes downhill pretty fast if I increase the load charge. So I guess my question is, if thats all the speed Im gonna be able to get with this load, am I leaving alot on the table or does the fps sound about right for a 260rem and 130gr bullets. How far have you pushed upward? You may be able to go a bit more and have it come back into tune.
Last edited by mathman; 01/25/17.
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Joined: Jan 2008
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Campfire Ranger
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Campfire Ranger
Joined: Jan 2008
Posts: 17,353 Likes: 3 |
It's slow. Try some faster powder such as RL-17 or 4451.
Screw you! I'm voting for Trump again!
Ecc 10:2
The heart of the wise inclines to the right, but that of a fool to the 24HCF.
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Joined: Nov 2014
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Campfire Regular
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Campfire Regular
Joined: Nov 2014
Posts: 1,379 |
I had the same issues with h4831 in the 260. I switched to h4350 and velocity went up considerably.
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Joined: Feb 2013
Posts: 47
Campfire Greenhorn
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Campfire Greenhorn
Joined: Feb 2013
Posts: 47 |
Hey Mathman, good question. I only increased it by .1 and then by .2gr. Accuracy declined as the load got bigger. I assume I found a node and am also merely assuming that to find the next node I would have to increase the load substantially (maybe beyond safe limits). That is why I just settled with the 2700fps. Please advise.
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Joined: Feb 2013
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Campfire Greenhorn
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Campfire Greenhorn
Joined: Feb 2013
Posts: 47 |
Hey JP, I tried h4350 with a few different bullets but my gun just didn't like it. Really poor accuracy for me. Thanks for the suggestion though
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Joined: Feb 2013
Posts: 47
Campfire Greenhorn
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Campfire Greenhorn
Joined: Feb 2013
Posts: 47 |
Higbean, thanks for the reply. How is the temp stability of those two powders listed? I'm definitely willing to try them.
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Joined: Feb 2013
Posts: 47
Campfire Greenhorn
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Campfire Greenhorn
Joined: Feb 2013
Posts: 47 |
Does anybody know what velocity I should be getting with a 130gr bullet? 2800? 2900?
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Joined: Jun 2004
Posts: 44,905 Likes: 13
Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2004
Posts: 44,905 Likes: 13 |
Hey Mathman, good question. I only increased it by .1 and then by .2gr. Accuracy declined as the load got bigger. I assume I found a node and am also merely assuming that to find the next node I would have to increase the load substantially (maybe beyond safe limits). That is why I just settled with the 2700fps. Please advise. According to Hodgdon's website you have some room to work. Your one tenth increments are really small. If your load was on a node an increase or decrease of a tenth or two should almost go unnoticed. This calls into question the reliability of the good load.
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Joined: Feb 2008
Posts: 631
Campfire Regular
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Campfire Regular
Joined: Feb 2008
Posts: 631 |
With 45.5 grs of Accurate 4350, I can crack 2800FPS with an 18.5" barrel, at 46grs I get pressure signs. Primer is CCI LR.
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Joined: Feb 2013
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Campfire Greenhorn
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Campfire Greenhorn
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Or my ability! Which may be the case!
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2006
Posts: 46,262 Likes: 14 |
Does anybody know what velocity I should be getting with a 130gr bullet? 2800? 2900? I get just under 2900 with a 123 and 48 grains of 4831 out of a 23" barrel, but that's beside the point. You said that accuracy goes away with more powder/velocity, so if you want more velocity and accuracy you need to try some different powders.
A wise man is frequently humbled.
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Campfire Regular
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Campfire Regular
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Whoops, thats with a 120gr GMX
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Joined: Jun 2004
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2004
Posts: 44,905 Likes: 13 |
Does anybody know what velocity I should be getting with a 130gr bullet? 2800? 2900? I get just under 2900 with a 123 and 48 grains of 4831 out of a 23" barrel, but that's beside the point. You said that accuracy goes away with more powder/velocity, so if you want more velocity and accuracy you need to try some different powders. See above discussion of the reliability of that result.
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Campfire Ranger
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Campfire Ranger
Joined: Jan 2005
Posts: 22,884 |
You need to put in quite a bit more powder to get up to your next accuracy load.
Or better yet, as suggested already, switch to a faster powder. RL-17 will usually get the most velocity at safe pressure, but I'm not convinced that it is as temp stable as H4350.
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Joined: Sep 2015
Posts: 833
Campfire Regular
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Campfire Regular
Joined: Sep 2015
Posts: 833 |
Does anybody know what velocity I should be getting with a 130gr bullet? 2800? 2900? Yazoo your velocity is within 25 fps of my Nosler 8 manual which states 45.5 for 2719. RL 17 is probably a good choice 7828 another. RL 26 sounds like the velocity king. Have yet to try myself. H4831 has always been accurate albeit slow. You may find another node at higher velocity. I 4831 is good as well slightly faster than H4831. I had no luck with 130's and have moved on 120's and 140's shoot lights out with H4831. Good luck and shoot straight. Bob
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Joined: Sep 2007
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Campfire Tracker
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Campfire Tracker
Joined: Sep 2007
Posts: 3,612 |
Hey guys, what kind of velocity should I be getting with my .260? Here are the stats...
24" 8 twist hart barrel
45.6 gr H4831sc
130gr accubond
Fed 210M/Lap brass
I'm getting great accuracy with this load but I'm only getting 2700fps using my magnetospeed. I have no pressure signs at 45.6gr but accuracy goes downhill pretty fast if I increase the load charge. So I guess my question is, if thats all the speed Im gonna be able to get with this load, am I leaving alot on the table or does the fps sound about right for a 260rem and 130gr bullets. That's why I gave up on H 4831 sc in the 260, excellent accuracy but not much speed. Have done much better with IMR 4451, IMR 4350, H 4350 and IMR 7828 ssc.
Gerry.
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Joined: Jan 2007
Posts: 35,900
Campfire 'Bwana
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Campfire 'Bwana
Joined: Jan 2007
Posts: 35,900 |
Does anybody know what velocity I should be getting with a 130gr bullet? 2800? 2900? I get just under 2900 with a 123 and 48 grains of 4831 out of a 23" barrel, but that's beside the point. You said that accuracy goes away with more powder/velocity, so if you want more velocity and accuracy you need to try some different powders. Agreed. When H4831 behaves like that it's telling you something.
The 280 Remington is overbore.
The 7 Rem Mag is over bore.
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Joined: Feb 2007
Posts: 16,512
Campfire Ranger
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Campfire Ranger
Joined: Feb 2007
Posts: 16,512 |
Yep, listen to your barrel and chrono....
That combo with H4831 SC should do 2850 +/- in many bbls that length, but sometimes variables change individual results.
I would experiment. In the end, I doubt most game to sane common ranges will notice, when vitals are hit. Good luck.
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