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  1. M

    Range Report AAC-SD 175gr Sierra MatchKing/RL-17 ladder testing (400yds)

    Both of those pics are turned 90° for some reason. That 500yd 3 shot group is 4.503". Most of that is vertical. Each square is 1". Velocities of the 3 shots were 2620, 2617, 2621. There was quite a bit of mirage today and I am definitely not the best shot in the world. I am not highly...
  2. M

    Range Report AAC-SD 175gr Sierra MatchKing/RL-17 ladder testing (400yds)

    I guess this is for both of you shooting AR Comp. What ES numbers are you guys getting? Different powders are hard to come by nowadays and RL-17 seems to be pretty easy for me to get. But, I am happy with just over 2600fps and with more practice I am sure I can shoot better than what my groups...
  3. M

    308 Win.Reloader 17 W/178 A-Max

    That's 150fps faster than my 20" with 47.8gr and 175smk at 2531fps. Sounds about right and produces low ES also in my gun. Also 5 shot groups of .6-.8"@100yds. I didn't use that load though because I went to 48.7gr which was my higher node to get just over 2600fps. But, my notes show that it was...
  4. M

    Range Report AAC-SD 175gr Sierra MatchKing/RL-17 ladder testing (400yds)

    So, I had a chance to shoot today. Got my load of 48.7gr sighted in at 100yds then worked out to 500yds. I don't claim to be the best shot in the world by any means so don't be hating. I have been shooting .8-.9" 5 shot groups at 100yds with this recently and have gotten down to .6-.7" 5 shot...
  5. M

    lowering my ES??

    Are you getting your velocities for one day or over many days? Is your ammo temperature the same everytime? Are you shooting through the chrono at the same distance everytime? Are you seating for OAL to tip or ogive?
  6. M

    Range Report AAC-SD 175gr Sierra MatchKing/RL-17 ladder testing (400yds)

    As of right now, 48.7gr is what I have shot to 500yds. It's done good so far just haven't had time to stretch it out. I also have some 47.8gr loaded up too. Maybe I will get to shoot them one of these days.
  7. M

    Throat length Vs. Cartridge Overall Length questions.

    If memory serves me correctly my aac-sd is 2.933" I load my 175smk to 2.86", I also have a Wyatts detacable magazine.
  8. M

    Reloader 17 in 308 win 168gn and up?

    Almost forgot that I shot 2 ladder tests. The first showed 2565fps and the second showed 2525fps for 47.5gr RL-17 under 175SMK. 63°F on the first and 48°F on the second. Looking at my numbers and your numbers there is a 100fps difference. That's not far off from what I would expect to see. Just...
  9. M

    RCBS 502 calibration is off

    Yes definitely get a check weight. That's the only way u will truly know.
  10. M

    RCBS 502 calibration is off

    Again, how are u zeroing it? And what are u comparing it to that is telling u it is .2gr off? If u are comparing to the Lee safety scale, don't.
  11. M

    RCBS 502 calibration is off

    How are you zeroing your scale? Are you setting the zero with the elevation adjustment while everything is on zero and your brass cup is in the holder? Are you checking your zero everytime you sit down to reload? Is your table level? Etc, etc, etc,
  12. M

    Range Report Why only 100yds?

    I guess my question is: Are we talking about shooting a group at 100yds to find a load that works or after a load has been found? The farther you get out the more shooter error comes into play. And yes you may see .5" groups at 100yds and then 2" at 200 and worse at 300yds. If the shooter...
  13. M

    ladder test for .308 loads

    It's not that hard to wrap your head around. You just have to realize there are 3 shot groups and better yet 5+ shot groups. There is the OCW test which uses 3 shot groups to find a similar POI. You can add the round robin approach to OCW to spread human error/environmental changes over the...
  14. M

    Ladder test questions

    Let's just say a staple is .5" long, that would tell me by looking at the pic that there is somewhere close to 12" between #2 and #8. That's my detective work. And that's a lot of left to right. I would have to say again that target is on its side.
  15. M

    1st ladder test. Thoughts...

    6 and 8 are kind of hard to tell if that was shooter error or not. If not then go with 2,3,4 and 6,7,8. Load up some rounds of #3(47.2) and #7(48.4), check your speed/spread and grouping with a couple of 5 shot groups for each charge. See which has the speed and accuracy you want then you can...
  16. M

    Ladder test questions

    Looks like the pic needs to be rotated 90° left to me. Is that the case?
  17. M

    Reloader 17 in 308 win 168gn and up?

    I sometimes question my chrony also. I am using an Alpha Chrony and have seen as much as 100fps difference on sunny vs cloudy days. I would expect to see somewhere around 120-150fps difference in your barrel and mine. Maybe your chrono was reading a little low that day? I don't know. I chrono...
  18. M

    Reloader 17 in 308 win 168gn and up?

    Numbers look about right to me. I shot a ladder test on 2/23/13 using 175smk/RL-17 in Remington and Winchester cases in my 20" aac-sd. Very roomy throat on this one. 63°F that day, Chrono @ 15ft 46.5 = 2521 47 = 2552 47.5 = 2565 48 = 2584 48.5 = 2630 49 = 2698 No pressure signs up to this...
  19. M

    Powder Valley Got a Shipment

    I wish they had some RL-17 too.
  20. M

    Range Report Bullets not stabilizing?

    Are you shooting over a chrono? Have you noticed any velocity swings on the fliers? I have used the same brass, primer, powder, bullet length, seating depth, etc and have seen 80fps difference on 1 or 2 out of 20rds fired. Thought it might be the chrono giving the bad numbers. I try to keep...
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