45-70 subs 1895 G .

RBHarter

West Central AR
So the best advice for full power is don't do it with a 45-500 FN .

Fine but I don't want artillery markers im attached to my shoulders , retinas , and hearing needs . So with that in mind let's pretend I want to shoot a 500 gr RCBS 45-500 FN in my Marlin holding it to a max fps of 1100 fps . Strelok says I can hold bottom half of the boiler room out to 175 yd with a 150 yd zero and have meat in the freezer even with these little white deer and carry a 1000 ftlb (relax it's just a point of reference number) out to 225 yd . Reasonably it gives me a low node , aka sub , good enough for elk or moose inside 200 yd that I can pretty easily figure out hold over and even a big black bear or hogzilla will have difficulties over coming . Aside from the waste of lead , which I'm thinking should be maybe 15 lb of flashing and 1# of pewter but maybe more lead , I can't really see a down side . It's matching the 300gr hot rod factory stuff where it matters and should have a report on par with a 22rf .

Trouble is a lack of data .
Sure there's the 10-14 gr of Unique and shoot the Chrony until the numbers line up but I've seen some off the books 4350 , 4198 , 4895 and 3031 data . I have a personal rule about 3 sources , I have 1.5 and haven't gotten the Lyman #43 or CBH #4 out . The bug here is the short nose with 350 gr of bullet inside the case vs the usual 60/40 of 450-535 "standards" . I get some wiggle room with with the Marlin 1895G for pressure but I kind of doubt it's a half inch of seating depth .

So any help is a good place to start .
Ben and Waco have some data here and I think I may have snagged that but it's been 4-5 years and I thought there might be something new to add .
 
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Brad

Benevolent Overlord and site owner
Staff member
QL can help. Need bullet weight, bullet length, cartridge OAL with bullet seated to desired depth.
I can’t guarantee I will run the numbers tomorrow as I have a family obligation.
 
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RBHarter

West Central AR
I have to cast some first ......
I think I may have captured your QL projections but they were targeted for 1400+ .
2.54 oal .
520 gr , there was this 27-130 @ 141 gr so I can the 45-500 being over.
1.297 bullet length from NOE version . It's listed at 534 gr .
2.1 trim length .
I can't give a case volume from here .
Powders on hand
Unique , H322 ,4198 , 4831 , IMR 4350 maybe some 4895 & 3031 .
 

RBHarter

West Central AR
Strelok for 1100 fps MV 150 yd zero 200' msl 50% 50° sights 1" above bore center line . The 25 yd step revised table is weird showing a maximum arc of -8.35 " at 75 yd I think . Handy tool to have .

Screenshot_20200517-174032~2.png
 

Ian

Notorious member
Okay, this is basically just what I did with the .458 Socom and Lee C458-500-RF. The AR has special need of course, but I did 1K fps from 10.5" rifled part of the barrel using Hodgdon Longshot and stayed in the 35Kpsi max zone.

In a rifle I'd think you could do it with Unique and not get stupid with pressure, but if not 4198 certainly would although will be much louder. If the hard drive hasn't crashed in my desktop (too many power spikes) I'll see what I can do tomorrow.
 

Ian

Notorious member
Looks like 10-12 grains of Unique (12 is pushing max trapdoor pressure and is not quite 1K fps from 20" barrel but has wine-cork muzzle pressure), 16-18 grains of 2400 (pretty much the ideal powder for this), or 21-23 grains of IMR 4198 (more for the H variety) but it will be 15K psi and flaming dirt with more than triple the muzzle pressure of Unique. I wouldn't even consider anything slower than 4198 safe.
 

RBHarter

West Central AR
It takes 30kpsi for I4350 to clean up , it'd take a compressed load by then I think it would be more enthusiasm than I care for .
H322 was nice in a 350 gr Colts but was faster than desired , also what made me buy the 1895 .