Lol, imagine the look on that bullets face when it gets smacked so hard it breaks the sound barrier in nano seconds.
Sent from my SM-G991U using Tapatalk
Lol, imagine the look on that bullets face when it gets smacked so hard it breaks the sound barrier in nano seconds.
Sent from my SM-G991U using Tapatalk
"Speak softly and carry a big stick; you will go far."
~Theodore Roosevelt~
Ideal #38 (1951) shows 22.0 of 2400 under the 308284 (207 gn) cast 1750 fps.
Lyman#3 (1980) shows 19.0 of 2400 under the 308284 (207 gn) cast 1562 fps, 23400 CUP; 26.5, 1968 fps, 35000 CUP.
Lyman Handbook of Cast Bullets (1958) shows 13.0 of 2400 under 311299 at 1425, Max of 24.0 at 2060.
Lyman 1958 also states that H-240 and 2400 are interchangeable.
That's all I got. Hope it helps or at least doesn't make things worse.
With my experience using 2400 in larger cases, I always started losing accuracy long before I would have any pressure problems.
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I remember reading of an old "armoury load" that consisted of 16.0/2400/ over 150 gr. cast. I think it was for 200 yard training of reserve troops. There's an art to making large capacity cases run well on very fast-burning rifle powders, like 2400, and I've never mastered it.
If memory serves, IMR-3031 was about the fastest-burning rifle propellant that gave full performance in .30-06 (though perhaps not with cast projectiles as heavy as yours). Consult Hodgdon before you try this, but I'D try to locate some IMR-3031 or any propellant with approximately that burn speed, find the STARTING load for projectiles weighing near what your NOE #311299 does, load 5 or 10 of those, and test fire them. Depending on results, I'd then work DOWNward, in 0.5-1.0 gr. increments, until you get velocity and accuracy that works for you.
THESE days, I know the difficulty and expense associated with finding and buying another powder for just one or a few projects, but I don't see you getting much in the way of good results with 2400 in .30-06. If your were trying this with a .45-70, which has a capacity (and little else) very similar to the .30-06, I'D expect you to be in good territory. I guess bottle-necking a case introduces a way-different set of dynamics to the way that fast-burning propellants ignite in big cases.
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I'm no expert but from the limited experience I have from trying different things. ive had good luck with decent accuracy in 30-06 311299 using slower powders, 4198, 8208, 4895.
2400-24 grs- 173 gr cast GC, 30-06 . Better accuracy with IMR 4895 reduced.
Paco Kelly's load of 22 gr. @ 2400 pushing a 400ish grain Boolits is wonderful in the .458 WM.
2400 is a very useful powder in the 30-06 and other 7-8mm cartridges. The following link is a sticky in the Military Rifles section. The author, C. E. Harris, is known as Outpost 75 here, IIRC.
https://castboolits.gunloads.com/sho...Rifles-Article
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unknown
i use 2400 in my 35/30 and 444 marlin, but i use a tuft of dacron. it is more accurate with dacron.
It was pretty easy for me to find good results w/ 30-06 & 2400.
Old (very nicely) sporterized Springfield A3.
I didn't dive these very hard at all, and started with the 'military case, 16 gr 2400, normal weight bullet' generic approach.
30-06
183 gr Sized .310" (as cast, lubed, checked) LYMAN 311291, Alliant 2400, F210 primer, seated w/ bottom of 1st riding band just below mouth (neck covers grease groove)
(22 BHN w/ LBT tester)
The multiple groups at 17.4 were the verification of group sizes for what I selected as a useful load for me.
15.3 gr 1.625" (5/5) 1.1875 (4/5) 100 yd
16 gr 1.875" (5/5) 1.625 (4/5) 100 yd
16.7 gr 2.0" (5/5) 0.875 (4/5) 100 yd
17.4 gr 1.375" (5/5) 0.75 (4/5) 100 yd
17.4 gr 1.375" (5/5) 1.375 (4/5)* 100 yd * -- Lost stick on 1" aim point after shot #2, aimed on larger (~3") black circle
17.4 gr 3.125 (10/10), 2.375" (8/10) 1.125 (best 5) 100 yd
18 gr 1.625" (5/5) 1.2 (4/5)* 100 yd * -- 3 touching
18gn 2400 works well in my 308 no fillers needed. in my 45-70 i use 22gn with 350 gn boolit but use a bit of toilet paper to keep powder next to the primer .without the filler got a lot of speed difference and a few hang fires.
BP | Bronze Point | IMR | Improved Military Rifle | PTD | Pointed |
BR | Bench Rest | M | Magnum | RN | Round Nose |
BT | Boat Tail | PL | Power-Lokt | SP | Soft Point |
C | Compressed Charge | PR | Primer | SPCL | Soft Point "Core-Lokt" |
HP | Hollow Point | PSPCL | Pointed Soft Point "Core Lokt" | C.O.L. | Cartridge Overall Length |
PSP | Pointed Soft Point | Spz | Spitzer Point | SBT | Spitzer Boat Tail |
LRN | Lead Round Nose | LWC | Lead Wad Cutter | LSWC | Lead Semi Wad Cutter |
GC | Gas Check |