In order to participate in the GunBroker Member forums, you must be logged in with your GunBroker.com account. Click the sign-in button at the top right of the forums page to get connected.

powder question

5mmgunguy5mmgunguy Member Posts: 3,092 ✭✭
edited February 2009 in Ask the Experts
Not sure how to ask this question, but I'll try it this way. I'm still not getting consistent shot groups out of my 257 Roberts. I'm using Speer Grand Slam 120's behind Varget powder. My question is, could changing to a slower powder, such as IMR 4350 make any difference. I tried 4 different loadings tonight. 36.0 grains, which shot the worst, 34.0 grains, 33.0 grains, and 32.5 grains. About as good as I could get was about a 3" group at 100 yards. Not very impressive huh?
· Share on FacebookShare on Twitter

Comments

  • 5mmgunguy5mmgunguy Member Posts: 3,092 ✭✭
    edited November -1
    Just opened a can of 4350 and found about a 1/2" of brown dust on top. Sucked it off with shop vac and powder looks fine but am concerned that it may no longer be good. Checked 2 other cans and they looked fine and they were all stored in the same locker. All dated 8/1988. Any help would be appreciated.

    thanks

    Walt
    · Share on FacebookShare on Twitter
  • 5mmgunguy5mmgunguy Member Posts: 3,092 ✭✭
    edited November -1
    I am loading some 250 gr hard cast bullets in 45 Colt for my Rossi 92 carbine. Why does most all loading data for cast bullets use only faster burning powders like Unique and Clays? I see that H110 gives very good results with jacketed bullets of the same weight so why is it not listed for the same weight cast bullets. I relize that generally a jacketed bullet can handle higher velocity than cast but in a cartrige like the 45 colt I would not think that the velocities are high enough to create a ploblem with a good hard cast bullet at the same velocities as are listed for jacketed. Just curious. Thanks Steve
    · Share on FacebookShare on Twitter
  • 5mmgunguy5mmgunguy Member Posts: 3,092 ✭✭
    edited November -1
    Is there any difference between AA Solo 4100 and AA Scot 4100?
    · Share on FacebookShare on Twitter
  • gunnut505gunnut505 Member Posts: 10,290 ✭
    edited November -1
    Just the burning rate.
    You should never assume that because some source says IMR4350 is the same as H4350, so you can use data for either one on whatever you're loading. Powders have different numbers and data is usually tailored to the specific characteristics of the powder being evaluated. Please get one of those free handouts from the powder companies from your local gunshop; read all the fine print at the start of the manual about substituting one powder for another, and the possible disastrous results.
    · Share on FacebookShare on Twitter
  • 5mmgunguy5mmgunguy Member Posts: 3,092 ✭✭
    edited November -1
    refresh
    · Share on FacebookShare on Twitter
  • frisky-maddogfrisky-maddog Member Posts: 208 ✭✭
    edited November -1
    http://www.lasc.us/RangingShot13-5.htm
    hello they compare aa scot 4100 to hodgdons lilgun

    http://www.accuratereloading.com/
    this has an area that may also help you
    · Share on FacebookShare on Twitter
  • k_townmank_townman Member Posts: 3,588
    edited November -1
    If there is anything different in the names or numbers of powders, just assume that they are NOT interchangeable. PLEASE, DO NOT ever experiment with this. There is no such thing as being too safety conscious when it comes to reloading any type of ammo. OK? [:)]
    · Share on FacebookShare on Twitter
  • 5mmgunguy5mmgunguy Member Posts: 3,092 ✭✭
    edited November -1
    Thanks everyone, all excellent advice which I will heed!!
    · Share on FacebookShare on Twitter
Sign In or Register to comment.