I have a good load for the 130NP 55/IMR4350 (3078FPS) according to the manual @3.20 COL and I loaded up with 57/H4831 for the 130SST (2999 FPS) according to the manual to see what happens. Which powder did you use???
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270 Win loaded with 130gr Hornady SST
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As my post stated, H4831SC.
Stammster
Well-Known Member
Like Dosh says, every gun likes something different.
IMO 57grs H4831SC is a pretty mild load for the 130 SST. You should be able to push 60gr or even more depending on you case capacity and actual lot. Most manuals list 60gr as max, but Hornady actually goes to 62 gr.
IMO 57grs H4831SC is a pretty mild load for the 130 SST. You should be able to push 60gr or even more depending on you case capacity and actual lot. Most manuals list 60gr as max, but Hornady actually goes to 62 gr.
i realize it is considered a mild load. I have COL can only be 3.32 due to the magazine for my kimber and i attempted loading 58/59/60 grains and due to the length of the bullet will not work however it would work using the 57-59/H4831/130NP. Believe me i have been researching ever known place and not willing to compress loads.
Thanks for the comment
I have read all the top reloading manuals and actually tried loading 58-60 grains and it will not work due to my magazine for my Kimber. Thanks
Stammster
Well-Known Member
I just looked back through my note. 3.23" is the perfect length to seat a 130 SST to have the cannelure at the case mouth for the 270 Win.
Are you using H4831 or H4831SC? SC packs much tighter and I haven't had an issue with 60gr.
According to QL with H4831SC and 3.23" COAL using Hornady brass with a 70.95gr H2O capacity.
59gr = 99.9% fill
60gr = 101.6% fill
61gr = 103.3% fill
I usually don't have issues seating compressed loads with stick powder until 105% fill +. But I can see your issue if using H4831 and a small capacity case as 59 gr is 105% fill.
If 4831/4831SC doesn't work for you, try H4350 in the 53-55 gr range. It will fit fine. I actually was able to get a little better accuracy with H4350 than H4831SC and only lost a few FPS.
Since you appear to be case limited with H4831, H4350/IMR4350 might be your ticket for even higher velocity.
Also check your COAL when at the lands. 3.32" mag length might actually be jammed with that Kimber using a 130 SST. I'm touching at 3.31" COAL as 3.23" COAL is a 0.080" jump.
Are you using H4831 or H4831SC? SC packs much tighter and I haven't had an issue with 60gr.
According to QL with H4831SC and 3.23" COAL using Hornady brass with a 70.95gr H2O capacity.
59gr = 99.9% fill
60gr = 101.6% fill
61gr = 103.3% fill
I usually don't have issues seating compressed loads with stick powder until 105% fill +. But I can see your issue if using H4831 and a small capacity case as 59 gr is 105% fill.
If 4831/4831SC doesn't work for you, try H4350 in the 53-55 gr range. It will fit fine. I actually was able to get a little better accuracy with H4350 than H4831SC and only lost a few FPS.
Since you appear to be case limited with H4831, H4350/IMR4350 might be your ticket for even higher velocity.
Also check your COAL when at the lands. 3.32" mag length might actually be jammed with that Kimber using a 130 SST. I'm touching at 3.31" COAL as 3.23" COAL is a 0.080" jump.
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milboltnut
Well-Known Member
Maybe for your rifle.... each rifle is different.
Stammster
Well-Known Member
^^^
Millboltnut....what are you talking about? This has nothing to do with the rifle.
2.530" trim length for a 270 Win case and 130 SST seated so the COAL is 3.230" puts the cannelure perfectly at the case mouth.
Nothing in the statement above has anything to do with optimum seating depth for a given rifle and preferred jump. But if a bullet has a cannelure, I try to seat it at the case mouth first and see how it works wrt accuracy.
Millboltnut....what are you talking about? This has nothing to do with the rifle.
2.530" trim length for a 270 Win case and 130 SST seated so the COAL is 3.230" puts the cannelure perfectly at the case mouth.
Nothing in the statement above has anything to do with optimum seating depth for a given rifle and preferred jump. But if a bullet has a cannelure, I try to seat it at the case mouth first and see how it works wrt accuracy.
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milboltnut
Well-Known Member
I just looked back through my note. 3.23" is the perfect length to seat a 130 SST to have the cannelure at the case mouth for the 270 Win.
to the cannlenure.... sorry. Whats the big deal about compressed loads? I get great accuracy and performance without it.
to the cannlenure.... sorry. Whats the big deal about compressed loads? I get great accuracy and performance without it.
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Stammster
Well-Known Member
I think he might be over compressed based on his comments. But these days it's nice to have load that conserves powder and still shoots great.
I.e. 49 gr IMR-4064 vs 53 gr H4350 vs 57 gr H4831SC vs 59 get RL 26 to reach the same goal (fps).
I also have no issues with slightly compressed. Like I said up to 105% is no issues with a drop tube or vibration. Sometimes necessary to reach that next accuracy node.
Likewise though I have many accurate loads in the 85-100% compressed...but tend to favor those with a full case.
I've even gone as high as 108-109% with RL26 before have seating issues and slight spring back of COAL.
Not sure when this thread got hijacked from the OPs request for IMR-4064 load data..
I.e. 49 gr IMR-4064 vs 53 gr H4350 vs 57 gr H4831SC vs 59 get RL 26 to reach the same goal (fps).
I also have no issues with slightly compressed. Like I said up to 105% is no issues with a drop tube or vibration. Sometimes necessary to reach that next accuracy node.
Likewise though I have many accurate loads in the 85-100% compressed...but tend to favor those with a full case.
I've even gone as high as 108-109% with RL26 before have seating issues and slight spring back of COAL.
Not sure when this thread got hijacked from the OPs request for IMR-4064 load data..
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milboltnut
Well-Known Member
Stammster
you are the one talking about the compressed load. I wouldn't say the thread was hijacked.
You mentioned what you load, and that's ok.
you are the one talking about the compressed load. I wouldn't say the thread was hijacked.
You mentioned what you load, and that's ok.Ah no.... I don't see him mentioning anything about a compressed load from the OP.
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Stammster
Well-Known Member
Stammster
Moose727 mentioned he was unable to go over 58-60gr of H4831 into his case -because it wouldn't fit if he was loading to 3.32" COAL due to mag length issue. I assumed (and calculated) he was compressed. See his post #36. I guess he was just figuring seating longer would allow for more powder room/capacity. Not exactly the way I would think through the problem - and thus one of my reply's above giving my experience with this load.
you are the one talking about the compressed load. I wouldn't say the thread was hijacked.
Ah no.... I don't see him mentioning anything about a compressed load.
Moose727 mentioned he was unable to go over 58-60gr of H4831 into his case -because it wouldn't fit if he was loading to 3.32" COAL due to mag length issue. I assumed (and calculated) he was compressed. See his post #36. I guess he was just figuring seating longer would allow for more powder room/capacity. Not exactly the way I would think through the problem - and thus one of my reply's above giving my experience with this load.
Unfortunately i don't have any H4831sc. So i have checked the magazine and the COL can't go over 3.32. I looked at the Nosler Bible and loaded up 5 rounds of 57Grns/H4831/130sst and 5 rounds of 59/H4831/130NP both @ 3.30 COL and both should be firing @3118 FPS according to the manual. Now as far as the case is concerned that is a Federal case and i have tried loading up 60 grns/H4831 and WAY to much powder and will not fit in the Mag... thanks for the intel...
milboltnut
Well-Known Member
easy to get lost in these threads sometimes
