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Thread: 335 hardcast in 45 Colt with 2400

  1. #1
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    Default 335 hardcast in 45 Colt with 2400

    Can anyone tell me how fast this is going and the pressure?
    Shooting 335 grain WLNGC in Ruger Redhawk 5 1/2" barrel.
    using 18 grains of 2400, 350 primers, and starline brass.
    Thanks!

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    No way to know besides measuring. Cartridge OAL plays a huge role in the outcome, and you don't give it.

    Best guess is 1150 fps (+/- 50) at 30,000+ psi of pressure.

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    With the Cast performance 335 grain LFNGC @ BHN22, seated and crimped in the crimp groove COAL 1.680"
    Here are my results with the 45 Colt and a couple of 5.5" Revolvers.

    23.0 grains W296 1181 fps
    23.0 grains H110 1179 fps
    22.0c grains H4227 1127 fps
    20.0 grains Lil'Gun 1157 fps
    18.0 grains 2400 1114 fps

    All these loads were between 29,000 and 30,000 CUP (not psi)
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    Murphy, aren't CUP and PSI pretty interchangeable below about 36,000?

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    Supporting Member iofthetaiga's Avatar
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    Quote Originally Posted by drow View Post
    Murphy, aren't CUP and PSI pretty interchangeable below about 36,000?
    Nope. Here's not quite everything you could ever want to know about correlating CUP and PSI: Attachment 60264


    Sorry, didn't mean to be answering for you, Murphy.
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    Quote Originally Posted by Jason23 View Post
    Murphy, aren't CUP and PSI pretty interchangeable below about 36,000?
    Well....I guess we could say they are close. For the most part Cup, below 36,000 reflect values less than the actual pressure. Above about 36,000 Psi is a larger number. Basically the two would plot in two tangental lines crossing at about 36,000 and divergent both above and below that number. BUT for the sake of mathematics and arguments, lets say that 30,000 psi and 30,000 CUP are very close in absolute pressure. My post there was just from a place where we were using the copper crusher system so I cannot say it was psi. It's a pretty safe assumption that at 30,000 to 36,000 psi the numbers are almost interchangeable.
    Anyway I thought it was a good comparison. I sometimes steal some notes from work.
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    Quote Originally Posted by iofthetaiga View Post
    Nope. Here's not quite everything you could ever want to know about correlating CUP and PSI: Attachment 60264


    Sorry, didn't mean to be answering for you, Murphy.
    No problem. Good article.
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    Thanks, fellas, good info.

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    Good info indeed. Thanks.
    COAL is 1.672". I don't know what it is but I shoot so much better with 2400 then H110 and Lil'Gun?

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    Moderator Paul H's Avatar
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    Your 2400 load has less recoil, and a different recoil pulse than H-110 or Lil gun. With big bore handguns and bullets over 300 gr, an extra 100 fps generates a noticeable increase in recoil.

    That said, I've found H-110 and Lil-gun capable of exceptional accuracy in big bore revolvers (2400 as well), when you find the load the gun likes. I've seen a 1/2 gr difference in powder cut a group in 1/2. Testing your loads from a solid rest at 50 yds will really open your eyes as to how tweaking loads for a revolver will shrink or open up groups.
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