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  1. #1
    Tinhorn
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    IMR 4198 for the 45 / 70 part 2

    I have been too busy to make a call to Hodgdon, but there has some very good points brought up on the older post. Here is some of the information I gathered regarding the 350 grn rn Hornady bullet.

    A quick summarization on my part................
    I choose imr 4198 because it is a tad faster burning and I have the Guide Gun with a 18 1/2" bbl. The faster powder I assume from MY experience can overcome the disadvantage of the shorter tube WITHIN REASONABLE LOADS. I like the Hornady bullets, I've been using them quite abit. I would like to try the Kodiak's but lost the address.

    so..Marlin load.....4th edition. .350 grn.. start 32.0 grns.....max 45.3 grns
    neither the 2007 manual for Hodgdon or IMR have the 45 /70 Marlin loads anymore! :?:
    Hodgdon on line info....350grn rn......start 47 grns for 32,500 cup
    maximum load........................................50 grns. .for 36,600 cup

    Lee dippers for imr 4198 vary but in usuable range.....31.6 grns....35.4 grns...39.2 grns....42.9 grns....46.7 gns

    My experience with dippers is I always check the dipper with my RCBS scale a few times and and see just what the "normal" variance might be. But because those dippers for that powder are well within manual data, I wouldn't worry too much.

    So my conclusion is what others have said, start low and work up to the most accurate load for the bullet / rifle. I am not recoil sensitve and don't normally shoot deer, so I what something accurate around 1900, 2000 fps. I hunt elk with a 375 H&H mag but killed a bunch with my 30/06. I do see an advantage using BIG rifles, & with ports on my guide gun. But shooting my frinds long bbl seems to tame the loads too. So, I like ported bbl in the shorter tube.

    I hope to get to make a phone call soon when work permits just to see what I am told. I don't think anything that I have said is contradicting. I do think there is too many variances in manuals, [ I didnot even talk about Speer , Sierra, etc for the sake of brievity] to go willy nilly loading the modern 45/70.
    Jim

    NRA Pistol Instr
    NRA RSO

  2. #2
    Deadeye
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    guide gun load

    I know this is off the subject but just for some food for thought. I have the same rifle as you are writing about and I have been usingIMR 3o31 with hornady 350 Rn with 56.5 grains with win cases WLR primer ,this is after I called Hodgdon. They told me their loads are tailord to the strength of the firearm ,that worked for me.My first loads at the starting load give me consistant 1865 fps with moderate recoil and pretty damn good accuracy. I may experiment a little but these loads seem to work well, I hope to get a chance in Vt this next week to try one on a deer or bear. I may try some hard cast bullets later as the hornady prices are getting a little rich for this old retired reloader ,I still have powder that was marked $2.25 LB that 's from almost 40 yr ag, been at the bench for 50 years where does time go..good luck ..
    Charles E Embury sr
    US ARMY vet,1961-1964
    Life member VVA
    Life member NRA
    Life member NAHC
    Oath Keeper
    Team Browning- #30
    Team 45/70- # 460
    Team Old Pharts- #113

  3. #3
    Tinhorn
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    IMR 4198 for the 45 / 70 part 2

    Thanks for the info, after I get done playing with imr 4198 I'll check out 3031. That is the fun part , trying new loads. I can appreciate what you're saying about cost. I see it every year, powder primers, bullets, ammo just keeps going up! Do you think the gun powder ever deteroates over time?
    Jim

    NRA Pistol Instr
    NRA RSO

  4. #4
    Deadeye
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    old powder ??

    I've never had any that I used that seemed bad ,but I think if you keep it sealed in the original container it will keep longer than I want to use it. Storage environment is important as well . I put some of my powder in zip lock bags as a barrier against moisture just as a extra margin of safety. If I don't like the way it smells it is GONE or if it get lumpy in the can.I have thrown out probably only about 6 or 8 cans that I didn't care to take a chance with, better to err on the safe side. Keeping it cool and dry is the key, but most of my powder has a short stay on the bench with the exception of the ones that did not do as it was suposed to ,I may keep that stuff for a future project then time flies and what was at the back of the shelf is now OLD STUFF.. Just like me... :lol: :lol:
    Charles E Embury sr
    US ARMY vet,1961-1964
    Life member VVA
    Life member NRA
    Life member NAHC
    Oath Keeper
    Team Browning- #30
    Team 45/70- # 460
    Team Old Pharts- #113

  5. #5
    fk
    fk is offline
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    IMR 4198 for the 45 / 70 part 2

    I have been working my up the ladder with H4198 and 405gr cast bullets. Started at 27grs at around 1150 and am now at 32grains and have reached 1350fps avg. What a sweet shooting round at 100yds been shooting a Uberti 1874 single shot and a Marlin 1895 45-70 22" barrel. I had been reading about IMR 4198 being a good shooting powder so I changed my last loads to 31grs of IMR 4198. Both are just good shooting rounds and not shoulder busters. What a shock I got from the IMR 4198 on how much dirtier it burns than the H4198. Just loved the H4198 hardly had to clean the rifles at all. Just a couple of good lubricated patches and the barrels were clean. Not he IMR4198 very dirty burning am going back to H4198 whenever I get shoot up this H4198. 32grs of H4198 is a very clean burning and accurate load. We are trying to get two rifles set up for a buffalo hunt so we are working our way to 500gr cast bullets.

    Hope this helps

    fknipfer
    NRA Life Member
    US Army Veteran
    Team 32 Special #13 (little scary huh)


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