Author Topic: ok people I'm confused (Read 623 times)

single shot shooter · « **on:** February 07, 2005, 12:48:30 PM »

I'm confused. T/C never made a .444 marlin barrel for the contender, right? becuase of high pressures? I see on t/c's page in thier cutom shop they'll make a 375 win barrel !? Whats up with this? the 375 win. has got a much higher pressure than the .444 marlin.
So whats the deal on this?
thanks
SSS
P.S shot my 45-70 contender yesterday and I love it

now looking to gather some more barrels, 22 lr , maybe a 22 mag a 44 mag ect.

scrounger · « **Reply #1 on:** February 07, 2005, 04:33:10 PM »

So does the .223 and the .204 Ruger and some others. Pressure is only one factor in determining the safety of chambering a round in a gun. Bolt thrust, which is the pressure the base of the case applies against the breech, is the major factor in deciding yes or no. The size of the rim comes into play here. The .223, with its' relatively small base area, even with 50,000 PSI chamber pressure, applies less bolt thrust than the .444 at 40,000 PSI. Maybe some mathematical genius figured out that the .444 at 40K has no more thrust than the .44 Mag at 40K?

hyltoto · « **Reply #2 on:** February 08, 2005, 03:58:00 AM »

Bursting strength will include the cross sectional area of the chamber, which gets mighty thin with a big fat cartridge like a 444 Marlin. A 223 is high pressure but look how thick the barrel is about the chamber. The chamber size is limited by the reciever size.

armory414 · « **Reply #3 on:** February 08, 2005, 04:42:28 AM »

Mike Bellm has comments about back thrust and other issues on his website, if you check it out.

single shot shooter · « **Reply #4 on:** February 08, 2005, 11:18:41 AM »

then would it even be safe to shoot the 300 grn remington loads from my 45-70 becuase those are some pretty hot loads. what about the PMC's goin 2,100 fps?