Originally Posted by
rockport
https://www.buffalobore.com/index.ph...ct_detail&p=43
Maybe I am reading it wrong
It does say (1,450 fps/M.E. 1,214 ft. lbs) at the top maybe I'm misunderstanding what the charts are? this is definitely not my area of expertise.
Edit: it looks like I was reading the wrong info there maybe and 1450 fps/M.E. 1,214 ft Lbs are the numbers my apologies
Still plenty for deer but I think I did misread the info.
I'm still a little confused by there information there. It says at the top of the chart "trajectory for .452 dia heavy colt .45 +p 260 GR J.H.P. BBA JHP at 1800 Feet per second.
I wonder if that's what they're saying you could expect out of a rifle? I wasn't at all trying to call Rockport out, but if there's an 1800ft.lb. 45Colt load on a shelf somewhere that's at or under 30-32,000psi, I wanna know about it!!!
I haven't ever fired the Buffalo Bore stuff out of my 45colt rifle (my '73 clone wouldn't appreciate that at all!), but I know I don't get anywhere near 1800fps out of my revolvers. The published ~1400ish was about right.
Even packing a boatload of H110 under a 250 XTP or 260 partition, I'm not sure I've ever broken 1500fps out of the 45Colt case in a revolver. 1800ft.lbs. is more than some of the 50,000psi factory 454 Casull loads produce (i.e. the Fusion 260's are only ~1100ft.lbs. Barnes 250's are 1600).
If such an animal existed, I'd wanna be shooting it! But if there's a way to do it, after quite a bit of trying, I still haven't found any way to get there with the 45colt case and still be under a safe pressure limit.
That chart has to be referencing rifle velocities. That'd be about right, based on the velocity increase I see in the same 44mag loads from revolver to rifle, ~1400ish fps loads from my 7.5" SBH's will run around 1750ish out of my 1894s.