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Thread: Reloader 17 in 300WSM

  1. #1

    Default Reloader 17 in 300WSM

    Well I finally got to the range to test some loads. 300WSM with 23" barrel, 165 grain Swift Scirroco and Winchester cases. My load with 4831 is pushing that bullet at right around 3000 fps. With RL17, I was over 3200 fps and showed some good accuracy potential. Was a really windy day so I stopped after testing two loads, but very good potential for velocity and accuracy. I think this powder is living up to it's reputation so far.
    "Everything that lives and moves will be food for you. Just as I gave you the green plants, I now give you everything."

  2. #2

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    I got some interestig results also that I'll be posting soon. I was able to get about 3195 with 180 E-Tips with no excessive prssure signs, but only about 3050 with 168 TTSX's. When seating the TTSX's they required a little more force than the E-Tips. When I measured their diameters. The TTSX's were about .001 greater in diameter than the E-Tips.

    I'm also working on a load for 210 Bergeres.

    Full report coming sometime this week.

    -MR

  3. #3
    Member Ronster's Avatar
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    Im watching this thread closely. I loaded up a set but havent made it to the range yet... What was your starting load for your 180 grainers?

  4. #4
    Member BrentC's Avatar
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    Quote Originally Posted by MontanaRifleman View Post
    I got some interestig results also that I'll be posting soon. I was able to get about 3195 with 180 E-Tips with no excessive prssure signs, but only about 3050 with 168 TTSX's. When seating the TTSX's they required a little more force than the E-Tips. When I measured their diameters. The TTSX's were about .001 greater in diameter than the E-Tips.

    I'm also working on a load for 210 Bergeres.

    Full report coming sometime this week.

    -MR
    Nearly 3200 with 180 E tips! Holy smokes! I thought I was doing well to push them across the chrono at 3000!

    That's nearly 300 RUM performance!

    What primer, powder charge did you end up with, and what was the accuracy?

  5. #5

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    Quote Originally Posted by MontanaRifleman View Post
    I got some interestig results also that I'll be posting soon. I was able to get about 3195 with 180 E-Tips with no excessive prssure signs, but only about 3050 with 168 TTSX's. When seating the TTSX's they required a little more force than the E-Tips. When I measured their diameters. The TTSX's were about .001 greater in diameter than the E-Tips.

    I'm also working on a load for 210 Bergeres.

    Full report coming sometime this week.

    -MR
    Wow, that is smokin'. Pressure signs were showing at 3250 with my 165's, but that's in a 23" barrel. I guess I can see with more barrel length running the 180's that hot. Defineatly an efficient powder.
    "Everything that lives and moves will be food for you. Just as I gave you the green plants, I now give you everything."

  6. #6

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    Well I'll go ahead and post what I have now.

    Sako 85 Finnlight 300 WSM, 24 3/8 factory barrel
    Norma Brass
    Fed GM215G

    I started at 65 gr and stepped up in half gr increments to 68 gr. At 68 gr (with E-Tips) I got a sticky bolt and very slightly cratered primers x2.

    * Note: add 8 fps to compensate distance (14 ft) of chrony

    Fri night-
    168 TTSX, OAL 2.93
    65.0, 3069, 3069, 3039, 3044 (3055 + 8 = 3063)
    65.5, 3090, 3037, 3066, 3058 (3063 + 8 = 3071)
    66.0, 3072, 3090, 3110 (3091 + 8 = 3099) * slightly stiff bolt
    66.5, 3136, 3140 (3138 + 8 = 3146) * stiff bolt
    67.0, 3145 + 8 = 3153 * very stiff bolt

    180 E-Tips, OAL 2.93
    65.0, 2980
    65.5, 3031
    66.0, 3092
    66.5, 3069
    67.0, 3066
    67.5, ---, 3095, 3097 (3096 + 8 = 3104)
    68.00, 3137, 3164 (3050 + 8 = 3058)

    Sat morn-
    180 E-Tips,
    OAL 2.93
    66.5, 2994, 2982,,2946 (2973 + 8 = 2981)
    67.0, 3066, 3087 (3076 + 8 = 3084)
    67.5, 3186, 3175, 3194, 3148, (3185 + 8 = 3193)
    OAL 3.010 (~.050 off the lands)
    67.5, 3177, 3169, 3167, 3194 (3177 + 8 = 3185)
    68.0, 3194, 3200 (3197 + 8 = 3205) * slightly over max

  7. #7

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    Comments and observations on the previous post...

    The chrony is a ProChrony I got back about 1995. I am not sure how accurate it is, but I think it's close. It records velocities close to factory charts, i.e., Fed 180 gr AB,s listed @ 2960 read about 2990 and 7mmRM Win 160 AB's listed @ 2950 read about 2970 through my chrony.

    First glaring thing is that on Friday evening shooting, the velocity for the E-Tips with 67.5 gr was 3104 vs 3193 on Sat morn. It was late evening, about an hour before sunset and cloudy, Friday night, so maybe the readings were off??? I shot 3 E-Tips that were loaded with 66 gr of H4350 right after shooting the string that registered about 3185 and they read about 2985 which is consistant with readings igot on that load a few weeks ago.

    Also note that on Fri night an E-tip shot in fronty of 66 gr recorded 3092 and the next to increments up recoreded successive lower velocities

    I find it weird that the TTSX's were topping out pressure wise way before the E-Tips. This was the same case to a lesser extent with H4350 in my rifle. These were shot last fall... 168 TTSX, 65.5 gr, 3030; 180 E-tip, 66 gr, 3034 (which is about 40 fps faster than I was rcording for the same load this spring)

    In another forum, a guy got very different results with the TTSX's last fall... 69 gr, 3351 fps out of a 24" Lija barrel...

    http://www.longrangehunting.com/foru...tsx-wow-35230/

    I have read a lot of conflicting reports on RL17... some saying it's the greatest thing since sliced brea and other saying it's not much better than what's out there. In my rifle, it smokes the E-Tips and gives better performance for the TTSX's than H4350.

    More to come on 210 Bergers.....

  8. #8

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    [QUOTE]
    Quote Originally Posted by BrentC View Post
    Nearly 3200 with 180 E tips! Holy smokes!
    Yup, that's exactly what I though when I saw the numbers on the chrony.... i thought it was a bad reading, but the follow on shots confirmed it.


    I thought I was doing well to push them across the chrono at 3000!
    so did I....

    That's nearly 300 RUM performance!
    I know of a guy who is getting 3400 fps out of his Sendero 300 RUM.

    What primer, powder charge did you end up with, and what was the accuracy?
    Dont ask about accuracy... this rifle has issues... it's not shooting anything well

  9. #9
    Unbridled Beast
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    '19/'22 is the .308" 165/8 fence as per WSM's.

    '17 is too fast.

  10. #10

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    This past week I worked on the 210 Bergers. I had to make two return visits to the range beacuase the max charge was greater than I expected... twice. I originally thought max for the 210's would be about 62, so I loaded up to 62.5 and fired them with no pressure signs. Then I loaded 63, 63.5 and 64... still no signs. Then I loaded 65 and 65.5. The 65.5 loads showed very slightly cratered primers but no stiff bolt. The avg MV was a very respectable 2935 for the 65.5

    I wont go to 66 because of the slight pressure signs I was seeing and the fact that the 168 TTSX's maxed at 65.5 and the 180 E-Tips maxed at 67.5

    I wont be using the Bergers becuase the 180 E-Tips @ 3193 fps out perform the Bergers well past 1000 yds.

    In anycase, this rifle is going back to the factory to be fixed or replaced for accuracy.

    Next project... 300 RUM

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