44 fairweather has a ring to it, if you're willing to max out the pressure you should get close to 444 marlin performance. If you use the whole case you'd get there for sure. I want a full length 30-06 necked up. Use a 444 marlin reamer to make a rimless 444 marlin.
That's pretty close on the usable case capacity. I did where a 240 would sit and it was about 41 grains. 1700-1800 with a 300 would be good medicine on deer. If the case is shorten to 1.750 then it's 44 millimeters so a 44x44.
Thats at 40k. If you use a large extension and bolt you could take it to 55-60 i think. I uad to make dinner, ill tinker some more.
I'd like to keep it as much stranded ar-15 as possible, even if it made 44mag speeds that's still plenty about what the 35rem does in energy.
Due ro bolt thrust youll be innthr .450, 458, 50 camp. None can really out do the others for the same reason. So a [email protected]+/- should be achievable.
I was messing around with cases and bullets one day and did the same thing with a 30-06 case and a 300 gr .430 XTP bullet. Also 1.8” case. My theory though was that you could relatively easily modify a 35 Rem Marlin 336 to the cartridge with a rebore to .429 and a chamber ream and maybe some slight mods to the lifter you would have a nice little big bore legal in all in the straight wall areas I hunt. This would be a much simpler mod than the 450 Bushmaster Marlin 336 conversions. Anyway, my name for it was going to be .44-06
Just make your you spec the bores on the barrels to pistol .429 eh? Not rifle saami? Actually that could be 2 different cartridges, the .44 fairweather using the PROPER bore diameter, and the .44ftw using the saami rifle bore that will only shoot like 2 or 3 different bullets
It should be noted that while many know the .44 Magnum rifle SAAMI bore diameter is .431 few ever note that the .444 Marlin is .430. This is still not proper but it makes you wonder if Marlin or Remington knew something when they specified .430 and not the .431 SAAMI bore of the 44 magnum that uses identical projectiles. Even Hornady, when making the 265 gr FP Interlock specifically for the .444 Marlin, made the bullet diameter .430. Now Hornady makes all their jacked 44 bullets .430 and that also make you wonder a bit.
MDWS already has done something very similar to this, it's not well known and there is only a few of them floating around they call it the 44 Slayer I believe and it's on a .308 case. Yours I think should be called 44 Fairweather. I think that's a cool name and in a light handy bolt action would be really nice for the straight wall states.
Choosing a proper bore and grove maybe a pain, I'd like a barrel that will like jacketed and cast bullets. A ballered type rifling will make a lot happy. Have to make sure the throat can't still fit a .431 bullet. Would be cool to design a barrel for powder coat bullets I'd think a shallow rifling maybe better the deep?
Name it .44 Thumper II for the Cooperites! They may develop mental issues with that cartridge in an AR though.... Would be great for REALLY BIG POODLES! -kBob
Unfortunately the magazine on the cz 527 is not wide enough for the 44 fairweather, it could be made to fit but it would be a lot of work widening the mag and have to do the same with the bottom metal. It should work in a mini mauser and the ruger and howa well. Talk about using all of the magazine lol.
I'd vote 44 Fairweather; why not have a cartridge named after you that has a name with a little lilt to it.
I know plenty of folks that shoot .311 down a .308 bore (hybrid type 7.62 x39 barrels that still get fed factory ammo) .429+ .003"=.432" of forgiveness, run it at .429 with a microgroove or 5r and you'll be good.
Yep 44 fairweather would work but you need an edge over the competing cartridges. Maybe loaded with a stiff charge of trinitrotoluene. That'll get that puppy moving.
I'm thinking a good dose of 300 mp or lil gun would be freaking awesome coming outta a carbine length barrel semi auto, but........ Could you do another one in .41???? Please.........
