The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Rifles Lever Action Rifles Maximum CUP ratings for a Marlin 1895??Go | New | Find | Notify | Tools | Reply | |
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| One of Us |
Does anybody know the maximum safe cup rating that a Marlir 1895 will handle?? thanks for the help. | ||
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| One of Us |
Typo, I meant Marlin, obviously. | |||
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| one of us |
40,000 psi. That of course is a stout load - on both ends !! If you are new to the 45-70 ,it doesn't work by velocity, it works by pushing a big slug which does lots of damage ! The 300 or 405 will do an excellent job on deer .Bigger animals or greater range might use SAAMI max of about 27,000 psi for better performance and that's a stiff enough load for most people. For 40,000 ? Have fun. | |||
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| One of Us |
There is an article in current Aug /Sep Handloader 248 where Brian Pearce states that the Marlin 1895 is capable of 43,500 psi. The basis of his claim are comparisons to the 450 Marlin and some destruction tests conducted by Marlin (but no specifics given). Only confusing thing is that he interchanges CUP and PSI but no change in the number. Other than that its a good article well worth reading if you are a 45/70 user. | |||
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one of us |
A review of the literature since 1972 when the "New Model Marlin 1895" was issued indicates that it is generally accepted that the modern Marlin 1895 45-70 has a safe operating pressure of 40,000 CUP, which is approximately 42,732 PSI. The 450 Marlin at 43,500 PSI generates approximately the same stress on the Marlin 336/444/1895 action as the 45-70 does at 40,000 CUP due to the 450's smaller cross-sectional area interfacing the bolt. You learn something new everyday whether you want to or not. | |||
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| new member |
Question-As P.O. Ackley did years ago with many rifles then currently available on the market has anyone anywhere actually tested the Marlin New Model 1895 to it's pressure limits. It seems that with all the confusion about this rifles strength and areas of weakness some respected research facility would have put this rifle through a good scientific model experiment. It seems almost certain that Marlin Firearms has done this for their own information but certainly an independent research lab has researched this as well. If anyone knows how I might approach this search I would appreciate the help and report what I find on the matter. thanks, Boltaction | |||
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| one of us |
[/QUOTE] due to the 450's smaller cross-sectional area interfacing the bolt.[/QUOTE] How did you arrive at that conclusion? | |||
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| One of Us |
I have shot the guide gun with the mid range loads and frankly my dear a 40,00o psi load with a 400 grain bullet is going to be a hand full. Making sure that there is a retinal specialist some where close would be recommended. If you own a gun and you are not a member of the NRA and other pro 2nd amendment organizations then YOU are part of the problem. | |||
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| one of us |
Measurement of cross-sectioned brass. You learn something new everyday whether you want to or not. | |||
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| one of us |
It seems that this is easily handled through inference. The Marlin 444 rifle chambered in 444 Marlin has a safe operating pressure of 44,000 CUP and is essentially the same action as the 336 and 1895. The 45-70 has about 10% more cross-sectional area interfacing the bolt as the 444 Marlin and hence exerts approximately the same forces on the action at 40,000 CUP as the 444 Marlin does at 44,000 CUP. As already mentioned, it is evident from the literature that the safe operating pressure of the Marlin 1895 45-70 is 40,000 CUP. You learn something new everyday whether you want to or not. | |||
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The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Rifles Lever Action Rifles Maximum CUP ratings for a Marlin 1895??
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