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Thread: 375 Winchester load data?



  1. #11
    Wrangler
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    I loaded 20 using the 200gr Sie PH and H322 just to have something to shoot in my newly acquired rifle. I have 3lbs. of Reloader 7 so I'm going to give that a try also. Even though my H322 load was on the lower end of Hodgdon's recommended loads, it was still compressed somewhat. With the holidays coming up and deer season starting next week, I don't think i'll have a lot of time for the range, but this is an ongoing project and I look forward to working on it. My .35 Rem was much easier. I bought two boxes of Hornady 200gr. FTX ammunition and it shot so well I didn't even bother trying to work up a handload for it.
    ballistics04 likes this.
    Team .30-30 #1449, Team .45-70 #1976, Team .35 #796, Team .444 #785
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  2. #12
    Marlin Marksman
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    Blue,
    Just give me directions and I will drive up and take that off of your hands so you can avoid all of those issues....

    I am 10 miles north of York, so only a two hour drive….

    I am a "Giver"...
    Travlin and Big Blue like this.
    Always better to carry "too much" gun and too many cartridges...
    Marlin 1894SS(2009), Marlin 1894(1975), Winchester 1886 Ultralight rifle(1910), Springfield Trapdoor carbine(1880), Sharps carbine(1863), Savage 99 358 Winchester.
    I like big calibers

  3. #13
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    RL7 anemic I have to kindly disagree. they will shoot through any deer on the planet, or at least in SC at 150yds I did a lot of testing and a sierra 200gr. with a case full of RL7 was the very best load. accuracy wise and with mucho poder,,,,,,,,,,,,,,,,
    Travlin, rob42049 and andy61 like this.
    I have never harvested an animal but I have KILLED QUITE A FEW !

    I would rather have a gun in my hand than a cop on the phone,,,,,,,,,

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  5. #14
    Marlin Marksman
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    Quote Originally Posted by OLSKOOL View Post
    RL7 anemic I have to kindly disagree. they will shoot through any deer on the planet, or at least in SC at 150yds I did a lot of testing and a sierra 200gr. with a case full of RL7 was the very best load. accuracy wise and with mucho poder,,,,,,,,,,,,,,,,
    Go back and read my first post.. The loads I was finding were anemic. That is why I was looking for others...
    Always better to carry "too much" gun and too many cartridges...
    Marlin 1894SS(2009), Marlin 1894(1975), Winchester 1886 Ultralight rifle(1910), Springfield Trapdoor carbine(1880), Sharps carbine(1863), Savage 99 358 Winchester.
    I like big calibers

  6. #15
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    well I hope you find what you are looking for, I can't help,,,,,,,,,,,
    rob42049 and jml like this.
    I have never harvested an animal but I have KILLED QUITE A FEW !

    I would rather have a gun in my hand than a cop on the phone,,,,,,,,,

  7. #16
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    I did a lot of testing with bullets and powders six years ago after finally finding a Marlin 375. I chronagraphed everything I tried along with the Winchester 200 grain and their discontinued 250 grain ammo. Real world velocity from my rifle with 20" barrel was quite a bit lower than any published load data along with the velocity Winchester claimed for their factory ammo.

    To make a long story short, max load of RL-7 gave highest velocity but accuracy was dismal. H322 shot well but velocity didn't come close to any published data. I ended up using the discontinued Hornady 220 grain with H4198 and data from the Hornady manual which is the highest I've seen listed. This load shot well but velocity was still over 100 fps slower than listed data but the highest of several powders tried.

    I've since moved on with the Les Vollmer bullet with H4198 but have not chronographed this load or any other powders. I also have the Ruger #3, the Savage 99, and Win 94 in 375 Win. If I ever get time in the future, I would like to chronograph those rifles with the Les vollmer bullet and several powders.
    ballistics04, rob42049 and andy61 like this.

  8. #17
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    I never ever worry about velocity. I will try top velocity powders first but only because they usually give the best accuracy, that is what I am always after, the rest will take care of itself. but I have been handloading for over 50 years now and have loaded for most things I will ever use and pretty much know which powder to use in a given cartridge,,,,,,,,,
    rob42049 and bassetman1974 like this.
    I have never harvested an animal but I have KILLED QUITE A FEW !

    I would rather have a gun in my hand than a cop on the phone,,,,,,,,,

  9. #18
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    Quote Originally Posted by OLSKOOL View Post
    I never ever worry about velocity. I will try top velocity powders first but only because they usually give the best accuracy, that is what I am always after, the rest will take care of itself. but I have been handloading for over 50 years now and have loaded for most things I will ever use and pretty much know which powder to use in a given cartridge,,,,,,,,,
    Velocity is not everything, but it's nice for a cartridge to actually come close to it's intended potential. I had two 30-06's with 22" barrels that couldn't achieve the velocity of a 308 Win with the same barrel length. I thought it pointless to use such rifles that recoiled more that used more powder to have lesser results than a short action cartridge. Also had a 257 Roberts that no matter what I did could not brake 2600 fps with a 100 grain bullet. That velocity is 400 fps slower than what the Nosler manual shows. I am by no means a hot rodder when it comes to handloading. It's just nice to come within 100 fps of the original velocity of when the cartridge was released by the manufacturer. On the other end of the spectrum, I have a custom built 250 Savage that I had to load below the starting loads of any manual to get it to down to the speed of any factory ammo ever offered. It was shooting faster than any of the four 257 Roberts I had on hand at the time.

  10. #19
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    There is not a lot of sense in investing in a 375 Winchester to only get a 200 grain bullet at 2000 fps. Thus my focus on loads with better speeds.
    I can do that 200 gr./2000 fps with my 1894 44 mag. Although the 375 Win will carry better past 100 yards even at 2000 fps.
    Logically, I could just look for a 35 Remington with factory ammo for 200/2000, but I prefer straight walls.
    Always better to carry "too much" gun and too many cartridges...
    Marlin 1894SS(2009), Marlin 1894(1975), Winchester 1886 Ultralight rifle(1910), Springfield Trapdoor carbine(1880), Sharps carbine(1863), Savage 99 358 Winchester.
    I like big calibers


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