missourideere
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- Jun 1, 2015
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Does anybody have any load data on .223 with the 68,75 or 80gr bullets.also dose anybody have any experience shooting long range with a .222
Long range .223
- Thread starter missourideere
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All the bullet makers that make those weight bullets have load data for them. Check their manuals.
You will need the proper twist to stabilize those long bullets. 8" to 7" twist. You tube has some videos of people shooting long range with 223.
You will need the proper twist to stabilize those long bullets. 8" to 7" twist. You tube has some videos of people shooting long range with 223.
To start with, read the info in this site:
223 Rem + 223 AI Cartridge Guide
There's one error in that site:
Here's what I've gleaned from people getting best accuracy with the .223 Rem (5.56 NATO) at long range 600 to 1000 yards) since I was one of the first few to shoot them in competition back in 1971:
* Use new cases. As bolt faces on the semiautos are oft times not squared up with the chamber axis, fired cases from them will have out of square case heads. They don't shoot bullets as accurate as new cases whose heads are typically quite square. If you choose to use fired cases, full length size them in a standard die whose neck is honed out to 1 to 2 thousandths smaller than a loaded round's neck diameter. The link above suggests one from Forster. Use a gauge to measure how much the fired case shoulder's set back and adjust the die so it's no more than .003" back from its fired position.
* Powder should be a short length stick/extruded type. Nobody gets best accuracy with any ball powder. While slower ones will shoot a given bullet out faster, they won't leave with the most consistent muzzle velocity. Match winners and record setters prefer accuracy over wind bucking; you can correct for wind but not for poor accuracy. Weigh charges to a 1/10th grain spread in charge weight; they don't have to be exact.
* Seat bullets to a depth that gives best accuracy. They may not fit in the magazine so you'll have to single load them. If they must be seated to fit the magazine, so be it.
* Do not crimp the case mouth onto or into the bullet.
* Shoot at least 15 shots per test load to get a statistically significant measure of the load's accuracy. There can be a 300% to 400% spread in group size from smallest to largest shooting only 3 shots per load. A 200% to 300% spread with 5 shot groups. 15 shot groups have about a 15% spread across several of them. Shoot twenty groups of each shot count per group and you'll understand. The first group shot is not always the smallest; nor the largest, for that matter.
* If you choose to shoot a few 3- or 5-shot groups with each load to asses its accuracy, pick the largest group's size for each load to represent its accuracy you can count on most of the time.
* Most important; you're the biggest variable in group shooting if you're holding onto the rifle as it rests atop something on a bench top.
Sierra Bullets' accuracy load that did well in several 20" AR type barrels:
23.5 grains of Viht N140 with their 80 grain bullet.
24.0 grains of Viht N140 with their 77 grain bullet.
223 Rem + 223 AI Cartridge Guide
There's one error in that site:
That should be 62,366 psi; EPVAT piezo transducer pressure gauge not the SAAMI 52,000 copper crusher "cup" one. This has oft times been a confusing issue for decades. Note also that the NATO pressure system is different than the SAAMI one that specs the .223 at 55,000 psi.
Here's what I've gleaned from people getting best accuracy with the .223 Rem (5.56 NATO) at long range 600 to 1000 yards) since I was one of the first few to shoot them in competition back in 1971:
* Use new cases. As bolt faces on the semiautos are oft times not squared up with the chamber axis, fired cases from them will have out of square case heads. They don't shoot bullets as accurate as new cases whose heads are typically quite square. If you choose to use fired cases, full length size them in a standard die whose neck is honed out to 1 to 2 thousandths smaller than a loaded round's neck diameter. The link above suggests one from Forster. Use a gauge to measure how much the fired case shoulder's set back and adjust the die so it's no more than .003" back from its fired position.
* Powder should be a short length stick/extruded type. Nobody gets best accuracy with any ball powder. While slower ones will shoot a given bullet out faster, they won't leave with the most consistent muzzle velocity. Match winners and record setters prefer accuracy over wind bucking; you can correct for wind but not for poor accuracy. Weigh charges to a 1/10th grain spread in charge weight; they don't have to be exact.
* Seat bullets to a depth that gives best accuracy. They may not fit in the magazine so you'll have to single load them. If they must be seated to fit the magazine, so be it.
* Do not crimp the case mouth onto or into the bullet.
* Shoot at least 15 shots per test load to get a statistically significant measure of the load's accuracy. There can be a 300% to 400% spread in group size from smallest to largest shooting only 3 shots per load. A 200% to 300% spread with 5 shot groups. 15 shot groups have about a 15% spread across several of them. Shoot twenty groups of each shot count per group and you'll understand. The first group shot is not always the smallest; nor the largest, for that matter.
* If you choose to shoot a few 3- or 5-shot groups with each load to asses its accuracy, pick the largest group's size for each load to represent its accuracy you can count on most of the time.
* Most important; you're the biggest variable in group shooting if you're holding onto the rifle as it rests atop something on a bench top.
Sierra Bullets' accuracy load that did well in several 20" AR type barrels:
23.5 grains of Viht N140 with their 80 grain bullet.
24.0 grains of Viht N140 with their 77 grain bullet.
Last edited:
Kansaswoodguy
Well-Known Member
- Joined
- Aug 26, 2014
- Messages
- 773
For 75gr HPBT match and 75gr Amax bullet I use IMR 8208 XBR it's not the fastest powder but very accurate. I also like IMR 4895 for the heavy bullets. Really want to try some Ramshot TAC but haven't gotten around to it.
Here is a link to JP rifles that's worth a read good info
http://jprifles.com/document_pdfs/JP Loading Document_600.pdf
Here is a link to JP rifles that's worth a read good info
http://jprifles.com/document_pdfs/JP Loading Document_600.pdf
Yes I do. I shoot a 26" Benchmark barrel in FTR out to 600 yards. I load 75 grain Amax's over 23.2 grains of H4895. I shoot HM scores with this rig. My buddy uses IMR 8208 XBR that I feel is equally as accurate. I have some 2000 MR but have not tried it and probably will stick with the Hodgdon powder.
