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Thread: N140 or N150 in 308

  1. #1

    N140 or N150 in 308

    Need to load some 165gr 308 bullets and have data for both N140 and N150. Anyone used either and have a preference. Normally use N140 with my 150gr but wondered if a slightly slower powder would work in a heavier bullet?

    cheers

    BE

  2. #2
    Yep, used 140 behind 165g and got even better groups than with 150g heads.

    Cheers

    Jim

  3. #3

  4. #4
    Quote Originally Posted by big ears View Post
    Need to load some 165gr 308 bullets and have data for both N140 and N150. Anyone used either and have a preference. Normally use N140 with my 150gr but wondered if a slightly slower powder would work in a heavier bullet?

    cheers

    BE
    I always used N150 for anything at or above 168grain and N135 for anything lighter than that in my 308. I found it worked better for me than N140.

  5. #5
    Only have experience of N135 under 150g.....and I think its the nuts........

  6. #6
    Quote Originally Posted by big ears View Post
    Need to load some 165gr 308 bullets and have data for both N140 and N150. Anyone used either and have a preference. Normally use N140 with my 150gr but wondered if a slightly slower powder would work in a heavier bullet?

    cheers

    BE
    Send Sako Boy a Pm. I know he uses N140 in his .308 and he's using either 165 or 168 gr.

    jon

  7. #7
    I don't use N-140 or N-150 in the .308; it is just very uncommon here for me locally, a pain to order and expensive. But I know some federal cops who load it for 168-gr and swear by it.

    N-140 is close to RL-15. The VV manual gives 40.0 gr to start and 46.0 max for 2,750 fps.
    N-150 is close to 4350. The VV manual gives 41.0 gr to start and 47.9 max for 2,750 fps.

    My experience with RL15 and Varget makes me guess 41.5 of N-140 to start, and depending on the brass, 42.5 to 43.5 for a sweet spot with about 2,620 fps from a 24-inch barrel ( which most .308s do not have ).

  8. #8
    I use N140 with 155's and 168's, works well at 1000yds +
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  9. #9
    Used a good bit of N150 behind 165gn bullets in .308. I did try N140 (that I used a lot of with lighter bullets to good effect) but I found that the pressure got too high before I got a load that was as accurate as the N150 gave me.

    That was only in my rifle and I can think of several people that use N140 with 165 grain bullets in .308 with good accuracy and without a pressure problem.

  10. #10
    "I use N140 with 155's and 168's, works well at 1000yds +"
    i can't see that far(1000yds) NOW.

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