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  1. ReaperDriver

    Any experience with the Aero Ultralight 1-Piece scope mount?

    It would be used for a Vortex 4.5-27 34mm tube on a 6CM upper. The rings look thin, but I'm trying to save as much weight as possible for a comp gun. Anyone running this mount? Thanks.
  2. ReaperDriver

    **6 Creedmoor**

    So finally got out and did a load test on my new Proof Research AI-AT Barrel. I initially shot just factory Match ammo to see how they did to get a sorta bench mark. Berger Factory 109 LR Hybrids and Hornady Factory 108 ELDM. Both of those shot well right out of the gate and put me in the...
  3. ReaperDriver

    Been out of the country for awhile. Now cannot post in Buy and Sell?

    The new rule sucks, but it's LL's show and he can do what he wants. His playpen, his rules. Oh well, there are plenty of other forums that don't have a Vig in order to sell something.
  4. ReaperDriver

    .260 Remington

    That looks really promising. I’ve been toying with the idea of trying the 153’s in my stick. It’s the identical copy of yours but with a Bartlein Gradous barrel. I’m having outstanding success out to 1600 yds with Berger 140s HT and 144 LRHTs. I’m getting just at or slightly under 2900 with the...
  5. ReaperDriver

    .260 Remington

    What sort of speeds are you getting? I’ve had decent luck (OK but not great) with Varget and 123 Scenars in my .260 gas gun. I think Varget may be a bit fast for 140s. What sort of speeds are you getting? I’ve had decent luck (OK but not great) with Varget and 123 Scenars in my .260 gas gun...
  6. ReaperDriver

    HUGE velocity swings - WTF??

    Yep, that's pretty much what my shooting partner said as well. My top load that day was about 2 full gr short of max, so maybe as you said the higher end charges may work. Given that the 4451 shot so well, I'll probably just shelve any additional testing with other powders for now.
  7. ReaperDriver

    HUGE velocity swings - WTF??

    I neck sized the virgins down to .270 and then ran them through the 6mm Wilson neck mandrel. It's my standard process now, so pretty sure inconsistent neck tension is not the cause of 200 ES and 107 SDs.
  8. ReaperDriver

    HUGE velocity swings - WTF??

    I may give the SP a try in my 26" .260 Rem with Berger 140s or 144s. It's a pretty slow powder, so should be good with some heavier bullets, longer barrels.
  9. ReaperDriver

    HUGE velocity swings - WTF??

    Yup, definitely not going to bother with SP at all. I've got plenty of 4451 (~20lbs), which it absolutely likes. And I've got an unopened 8lb'er of H4350. Based on my results yesterday with the 4451, my load dev is done in 15 rounds. I found a node right at 3000 fps that shoots into a tiny...
  10. ReaperDriver

    HUGE velocity swings - WTF??

    Understood. After shooting the 4451 string, I was happy again and at least it ruled out most other things other than the powder. I guess I won't be using SP anymore for this cartridge. And I bought a brand new 8lb jug of it just for this caliber based on others saying they've had good luck...
  11. ReaperDriver

    HUGE velocity swings - WTF??

    Yeah, no idea what Hornady uses - but this issue seems to be powder related. I've had powders that just dpn't shoot. But a 200 ES and and a 100+ seems out of the realm of possibility.
  12. ReaperDriver

    HUGE velocity swings - WTF??

    This was the very first rounds of load development for the rifle. The barrel had about 20 total rounds down it when I started. I checked the distance to the lands and I'm nowhere close to it. I loaded these at 2.775 OAL to match the Berger factory loads. I figured that was a good place to...
  13. ReaperDriver

    HUGE velocity swings - WTF??

    It was not just 3 shots. It's 5 ladders of 3 shots each (15 total) and all the ES and SD were off the scale, The Best spread was 69 fps with about a 44 SD. I did 5 ladders of 3 shots each from 40.6 to 42.2gr of SuperPerformance in .4 gr increments.
  14. ReaperDriver

    HUGE velocity swings - WTF??

    Today I finally got out to start development in my new 6CM Proof Research barrel for my AI-AT. I was very optimistic after I shot a few strings of factory Berger 109 and Hornady 108 ELDMs. Both of those shot half inch right out of the box. So I loaded up a string of 5x 3 shot ladders of...
  15. ReaperDriver

    **6 Creedmoor**

    Yeah, I assumed they probably were proprietary but thought it worth asking. I might pull one of the bullets from a factory Berger round and weigh the powder just to see. It would also be worth seeing if they are using a stick or ball powder. I might try a quick work up with H4350, but more...
  16. ReaperDriver

    **6 Creedmoor**

    Does anyone happen to know what powder and charge weight Berger 109 LRHT and Hornady 108 ELDM use for their match rounds? They shot so well, I'd just like to duplicate them around that 2950 node and save all the load dev and barrel life and just shoot it at range.
  17. ReaperDriver

    **6 Creedmoor**

    Hi all, need some powder recommendations. On the spur of the moment while *still* waiting for my JP 6CM upper to arrive - I picked up a 24" Proof stainless 6CM barrel for my AI-AT. I have been stockpiling 6CM components when I could find them, so wanted to get some experience with the...
  18. ReaperDriver

    Proof Research barrels for an AI-AT? What's the skinny?

    Out of curiosity, what loads are you shooting in your 6CM? I'm just starting the loading process from mine and am curious to see what other 6CM guys are having luck with.
  19. ReaperDriver

    Proof Research barrels for an AI-AT? What's the skinny?

    I just got my Proof barrel from Milehigh just last week and it shoots amazing right out of the box with factory ammo. I had a few boxes of factory Match ammo on hand (109 Berger and 108 ELD-M Hornady). So I gave it a quick test fire to get some data on speeds and headspacing before I started...
  20. ReaperDriver

    .260 Remington

    I still believe the Prime brass is really soft. I've shot a fairly stiff load in Lapua brass and have had no issues through 10 firings. After 2-3, the new primers almost fall out of the case. And that's not an exaggeration. I've literally had some come loose in the magazine.