223, 223 Ai, 22-250 or 22 creedmoor??

Mystic Precision said:
Could you run the numbers but in a 24" to 26" barrel. I sincerely doubt anyone ran a 30" barrel at Meaford

Then up the ante to reach 3100fps for a 24 to 26" barrel.

Thanks

Jerry
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Okay, a load of 24.6 grains out of a 26"barrel still under max ( 63,478PSI) is at 3027 FPS.
Booting it up to 3,101FPS would take a load density of approx 104.04% fill, 25.3 grains and a a whopping 69,9505 PSI!G:
Cat
 
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FWIW

I used 223 with a Wylde chamber. 30" barrel. 80 Sierra gets 3000 fps with 26 gr of RL15. Barrel has almost 10,000 rounds now and is not grouping quite as well as in the past.

22-25Ackley was up to 3400 with the 80 Sierra, but barrel life was about 1000 rounds. I down loaded to save the barrel, but 223 got about the same results.
 
Ganderite said:
FWIW

I used 223 with a Wylde chamber. 30" barrel. 80 Sierra gets 3000 fps with 26 gr of RL15. Barrel has almost 10,000 rounds now and is not grouping quite as well as in the past.

22-25Ackley was up to 3400 with the 80 Sierra, but barrel life was about 1000 rounds. I down loaded to save the barrel, but 223 got about the same results.
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24.7 grains of Varget is pushing my .223 with the Wylde chamber at just shy of 3,000 (2,924FPS) out of the BT112.
Cat
 
remington jim said:
Kool Cat ! and how about with a 22.5 " like my Tikka has ! I run those 75 gr-ers thru mine at a LOT less FPS ! RJ
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A 22.5 " barrel with a 75 Berger max's out at 24.5 grains of 8202XBR with 61,994 PSI and 2,9294 FPS.

to hit 3,11009 you would have to be at 26.2 grains of that stuff and be running around 77,226 PSI

There is likely some powder that would be better but I shoot Varget in my mouse gun and am happy!
If you are a little over at 25.2 you can theoretically hit 3,004 FPS but you will also be at 67,843 PSI. Personally speaking I am not anywhere near interested in making a short barreled .223 look like a speed demon with those numbers!:p
Cat
 
iron cat said:
Okay, a load of 24.6 grains out of a 26"barrel still under max ( 63,478PSI) is at 3027 FPS.
Booting it up to 3,101FPS would take a load density of approx 104.04% fill, 25.3 grains and a a whopping 69,9505 PSI!G:
Cat
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Thanks for the info. There is no free lunch.... and I suspect accuracy is likely on a razors edge at these types of pressures.... if it shot at all.

I would also wonder how much of the bearing surface of the bullet is in the neck (yes, I could just try and load a few but feeling lazy) vs the OAL.

Fun project... It is really a pity that the rules neuter the 223 so much (PRS). It really has a bucket load of potential ....

Jerry
 
There is a bit of difference in the pressure ceilings between the Berger, sierra and AMAX bullets forr sure.

with 24 grains of Varget in a 26" barrel, the Berger reads 55,545 PSI and 2829 FPS

The Hornady comes in at 58470 PSI and 2858 FPS

The Sierra is at 55,478 PSI and 2828 FPS
Cat
 
Mystic Precision said:
Thanks for the info. There is no free lunch.... and I suspect accuracy is likely on a razors edge at these types of pressures.... if it shot at all.

I would also wonder how much of the bearing surface of the bullet is in the neck (yes, I could just try and load a few but feeling lazy) vs the OAL.

Fun project... It is really a pity that the rules neuter the 223 so much (PRS). It really has a bucket load of potential ....

Jerry
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Only if you care about staying in tactical division - which is why it is "tactical division", to stay somewhat within the factory confines of .223 and .308. .gov is not shooting hot-rodded .308's or .223's. Hot rodding those cartridges is neither the intent nor the spirit of the tactical division. If you want to open up your options, just shoot open division. Still shooting the same COF against the same people. Most people don't care about tactical division anyways.

Go to open division and shoot whatever .22/.223 combination you want.
 
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kthomas said:
Only if you care about staying in tactical division - which is why it is "tactical division", to stay somewhat within the factory confines of .223 and .308. .gov is not shooting hot-rodded .308's or .223's. Hot rodding those cartridges is neither the intent nor the spirit of the tactical division. If you want to open up your options, just shoot open division. Still shooting the same COF against the same people. Most people don't care about tactical division anyways.

Go to open division and shoot whatever .22/.223 combination you want.
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Exactly this.

For what it's worth I shoot the 75gr BTHPs in Rem cases with 25.0gr of Varget and a CCI 400 primer and get 2900-2930 fps out of my 26" trainer barrel (Bartlein MTU 1:7). No pressure signs, cases barely grow and it shoots sub-1/2moa. This whole hot-rodding .223 thing is weird to me, just shoot a more appropriate caliber.
 
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rugbydave said:
Exactly this.

For what it's worth I shoot the 75gr BTHPs in Rem cases with 25.0gr of Varget and a CCI 400 primer and get 2900-2930 fps out of my 26" trainer barrel. No pressure signs, cases barely grow and it shoots sub-1/2moa. This whole hot-rodding .223 thing is weird to me, just shoot a more appropriate caliber.
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Yeah, that would put you more than 3,000 PSI under thee max pressure using Quickload but right in there for velocity:)
with no case issues and sub 1/2 MOA what's not too like??:redface:
Cat
 
I never said anyone should run at unsafe pressures, I said that by increasing the seating depth you can increase case capacity and thereby increase muzzle velocity without increasing chamber pressures.

I'm not suggesting that someone with a short throat try to hit over 3000 fps with 75s, but it can be done with a long throat and a generous barrel length.

As for the just get a bigger rifle crowd, I'm all for it if you're buying... the rifle... the new brass.. the new sizing dies... seating die... neck bushings... little crow length trimming tool, expander mandrels... etc.

Sometimes a guy gets so invested in a certain cartridge that it can be quite expensive to change direction after a certain point.. in terms of cost and a persons age factored into the return on investment.
 
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Maple57 said:
I never said anyone should run at unsafe pressures, I said that by increasing the seating depth you can increase case capacity and thereby increase muzzle velocity without increasing chamber pressures.

I'm not suggesting that someone with a short throat try to hit over 3000 fps with 75s, but it can be done with a long throat and a generous barrel length.

As for the gust get a bigger rifle crowd, I'm all for it if you're buying... the rifle... the new brass.. the new sizing dies... seating die... neck bushings... little crow length trimming tool, expander mandrels... etc.

Sometimes a guy gets so invested in a certain cartridge that it can be quite expensive to change direction after a certain point.. in terms of cost and a persons age factored into the return on investment.
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that is exactly the issue that I have with the Quickload program, one cannot change the throat length on the rifle with it, only the OAL of the cartridge, also things like primer or case brand would come into play as well, so yes it is a good program for generalities but not precise enough to use as a loading program.
Cat
 
Yes increasing the powder capacity that way makes perfect sense. If I go with 223 for my second 223 build it’ll prob have .090 free bore for 75 grainers and more case capacity without over pressure. Still stuck on my decision tho. 22-250 would make more sense in a way
 
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