data for 1895 marlin 45-70 475gr lfn?

[mebe007]

Ok guys, I took some 475gr cast lfngc in trade and I need some data for them. Here they are next to 300gr cast lfn, sierra 300gr hp, rem 405fp

http://i42.photobucket.com/albums/e322/mebe007/IMAG0643.jpg

[btroj]

How hard you want to push them? How much recoil you want? I bet that around 1500 will do anything you need with that bullet.
So many powders can do what you want. re7, 4198, 3031, 322, 4895, Varget to name a few. Trailboss will do well in the 1000 fps range. 2400 will do well up to 1300 with ease.

We need more info to give you a more precise answer.

[mebe007]

Well id like to know what will be a good middle of the road load. But it never hurts to have a mule stomper. So id like to know the wild limits and starting points.

I have IMR 4064, 4350, 4198, 3031, and Unique

[btroj]

I don't use any of the powders you listed so I can give much help. I do know that Unique will do well for the 1100 fps range stuff and the 4198 will easily do for the 1400 fps stuff. The 3031 is your high end load powder.
What I do is look in a Lyman manual and get data for a similar weight bullet. I use starting load info from there and slowly work up.

[mebe007]

That's the problem, my lyman manual stops at 405gr for 1895 marlin. There is a 475 in the ruger #1 data but it looks like a long postell type boolit

[nfg]

Check out Beartooth's Tech section for the articles on the 45-70 525gr Pile Drivers...there is siome load data listed with different powders...

Pick a powder you like from the list and start about 10% below and work up to whatever you can handle...I think you will hit the powder compression limits before you hit max pressure and velocity except for the H4198 and RL7 powders.

I'm working with a 500 gr RN that I bobbed the RN of and left a 0.260" meplat and I hit the compression limit quicker because my bullet was originally 1.32" and the 525 is 1.28". I couldn't get anymore than 49 gr of H4895 in my cases without heavily compressing the charge at 2.65" COL and Beartooth went to 52 gr.

There is some data online for 500 gr bullets but you have to search for it.

8208 worked better as it is slightly faster and has a better density...Benchmark, AA2230 and RL10 are also good. I like a 100% fill so I use the powder that gets me there with the highest velocity in the 35-38 KCUP pressure range...what powder depends on the bullet length and weight.

So far with 430-550 gr slugs H4198, 3031, RL-7 and 10X, AA2230, H322 and 335 are the goto powders for the top end loads and 4759 for "plinkers".

This is a large caliber rifle so I use heavy bullets...430-550gr...if I wanted to shoot a lighter bullet I would go down a caliber or two and pick a bullet at the high end of the weight range.

Basically what you have to be carefull about it trying to use data designed for longer COL's in a shorter COL...i.e., 2.90" plus COL for a Sharps and then seat to 2.55" in the Marlin. What you do is reduce the NET case volume which increases the pressure.

Go to an online Powley computer or WINLOAD from Steves pages, and you can fiddle with the COL's, bullet weights, powder capacities etc and come up with a nice load to test THEN be sure the pressure is in the safe range of the Marlin before you pull the trigger.

You can also use data for 425-450 gr, start at the low end and work up...Basic Reloading 101.

Luck

[mebe007]

its wierd the only data i have been able to find in manuals are for accurate arms powders only.

[nfg]

Not so weird as most leverguns don't go much above 400 gr because of length problems in the heavier bullets and cycling through the action...BP and single shots handle the heavier slugs so you can find more data on those forums...still usable in some cases.

One reason I rechambered and long throated my 45-70 barrel was to be able to single load those long Postell type 500-600 gr slugs. You can work up a nice long range load and do the site in procedure and have a couple rounds ready just in case a long shot presents itself, or just for potting sage ratz out past 200 yds.

Today I finished load testing on the "495 gr FN Bobbit"...used the RL-7 data from Beartooth and added a bit because my 2.65" seating length give an addtional 4 gr H2O volume and the lighter bullet...topped out at 1737fs...40 gr RL-7 gave 1540fs...so one grain of RL-7 equals about 40 fs in MY 22" barreled Marlin.

Considering that Garrett loads their 540gr Hammerheads to 1550fs at 35 KCUP and that bullet does 6-8 ft of penetration in ballistic gel, I think my puny 495 gr will do all right...as is it goes through ~16" of lodgepole pine cross grain and kicks up a BIG crater/sand eruption in my sand box...even the 40 gr load zipps through the log but doesn't crater as much.

Not too rough on the shoulder with the muzzle brake I designed with the holes on top and at 45° to keep the muzzle down...at least off hand and to my thinking...but I'll look for a "fish" to do the bench testing for accuracy...Heh, heh, heh:twisted::shock::bigsmyl2:

Luck

[bigted]

a nice load for the marlin is...

rcbs gc boolit # 45-500. flat nose weighing around 520+ - and the gas check makes it ready for all velocitys that your shoulder can withstand. i use 32 gr rl-7 for plinkers and this should be the shisss nisss for anything in range inside 150yds in the lower 48.

i loaded a 520gr lyman with 50gr of 3031 for my ruger #1 and my...this goes off with authority for sure. i dont think the preassure is over the lever limit but the coal is too long.

experiment with the rcbs boolit and 3031 with carefull watching for preassure signs and i bet you will find a load that meets your expectations.

[mebe007]

but what is a starting point with that powder. all my manuals list accurate arms powders only for the super heavy stuff. btw these bullets were supposedly from a member here, (duke nukem) according to previous caretaker.

[nfg]

GOTO the Beartooth tech article for the 525 Pile driver...pick ANY powder...subtract 25% of the listed load and start there....your really need a chrono to tell you what is going on...if you don't have a chrono, buy one if you are going to muck about with bullets and powders that aren't listed.

Because you are using a bullet that is lighter than the 525 gr Pile Drivers, that data SHOULD be safe, but I don't know you from Adam nor do I know the level of reloading/ballistics exprience you have and from your questions I suspect you need to learn up a bit more...all the information you are seeking is already been posted( indirectly...you aren't reading between the lines)and a dozen or more forums are full of that information also.

No Diss intended or implied...I don't give out specific load information just to be on the safe side...this is the "World Wide Web"...who knows who and where the info is going or how it is being used...

The Lyman 48 and 49 have several loads listed.

Remember that dropping a listed powder load by 10% also drops the pressure by ~10% and the velocity by ~5%. That little bit of "secret knowledge" should give you all the information you need to develop a starting load...but you have to add in the barrel length, COL, powder burn rate, bullet weight, receiver pressure rating, etc, in order to come up with a "GUESTIMATE", and without a chrono you can't even begin to know how your loads are matching up to already published data.

That sounds like a very nice load, BigTed. I don't expect to use anything heavier than ~425 gr in my 458 A Marlin or 450M BLR...I save the really heavy stuff for my 45-120. :lol: I picked these 500 RN's up at a gunshow just to see how they would work. I don't know what type of lub he used but I DON'T like it a bit...sticky, Red, comes off on everything, mucks up the dies but it DOES work...no leading whatsoever. I will stick with my Oregon Trails, Beartooth and Cast Performance CG's and leave the sticky off. :x ;) :!:


Luck