Badlands BD-2 load data

Ok, just shot the 140 SBD II's in a 25" .270 Sherman (.270 win with a shortened neck, less body taper and 40° shoulder) tonight. For reference, another 19" I loaded for maxed at about 3160 with RL26. Also, this gun has always left very faint ejector marks even on very low pressure loads, for this one I look at how prominent the ejector marks are, as well as primer crater, and feel for bolt lift. This is without the supressor attached, that may add 10-20 fps, not much.

Peterson once fired, formed brass
CCI 250
140 SBDII @ .020" off
VV N-565

1. 60 - 2969
20220504_204247.jpg


2. 61 - 3077
20220504_204242.jpg


3. 62 - 3107
20220504_204238.jpg


4. 63 - 3126
20220504_204232.jpg


5. 64 - 3192
20220504_204227.jpg


6. 65 - 3229
20220504_204220.jpg


7. 66 - 3313 slight primer crater. No bolt lift. No change in ejector mark.
20220504_204214.jpg


8. 67 - 3337 slightly more primer crater. Same ejector mark. No bolt lift
20220504_204205.jpg


9. 68 - 3406 more prominent primer crater, slightly flatter primer, more obvious ejector mark, no shine of swipe, and still no bolt lift.
20220504_204158.jpg


66 grains was right at 100% fill, 67 was slightly compressed, and 68 I had to adjust my seater about .003" deeper to maintain seating depth. I would say about 67.0 grains is max, so I will likely keep my load at 66 or less. If you look at the target below shot at 125 yards, impacts pretty steadily climbed until shots 6-9, then went into about .75"
20220504_204051.jpg


I think now I will load a coarse seating depth test with 65 grains, and establish roughly where the bullet likes to set. After that, I will probably run this ladder: 64.3, 64.5, 64.7, 64.9, 65.1, 65.3, 65.5, 65.7, 65.9, 66.1. That will be a ladder of just under 2 grains, spanning a little over 100 fps, I would bet there is a node or two in there.
 
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Anyone developed a 150 load In 28 Nosler

Also… I'm running 145 BDs at 3220 fps over 66.5 grains RL19 in a 284 Jarrett… load was developed by Jarrett rifles… would like to try the 150 BD-2 over a more temp stable powder but struggling with powder selection and starting load… should be pretty close to 7mm Dakota capacity…

Have an older copy of quick load but anti virus won't let it load so at a dead stop with that until I get a new computer
 
H1000 data for 338 Norma Magnum.
Highest I've gone up to is 87.5 grains with the 275 grain SBDII.

Out of my 26" tube.

Case: Peterson non virgin
Primer: FED 215
Powder: H1000
Bullet: 275 Grain Super Bulldozer II

Charge 87.24 grains of H1000 (Ten Shots)
32.45 extreme spread
10.27 standard deviation

2828 fps
2809 fps
2820 fps
2797 fps
2795 fps
2819 fps
2802 fps
2808 fps
2812 fps
2814 fps



Charge 87.36 grains of H1000 (Ten shots. Only 9 registered)
43.77 extreme spread
13.50 standard deviation

2828 fps
2850 fps
2809 fps
2806 fps
2830 fps
2823 fps
2820 fps
2830 fps
2812 fps
Sweet!
 
Loading the 6.5mm 125 grain SBD2 in a 6.5 Sherman Short. Best group is seated 2.250 CBTO, 56.3 grains of RL23 has it moving 3116 fps with single digit ES. Having a little trouble with the first round fired. See attached photo:

EADA6E7E-B443-4D0E-8A99-5FC3FDCE2942.jpeg

First round is always a bit off. Waiting 1-2 minutes between rounds, Any thoughts on how to get this tightened up?

24" proof barrel on a Pierce titanium action.
 
Loading the 6.5mm 125 grain SBD2 in a 6.5 Sherman Short. Best group is seated 2.250 CBTO, 56.3 grains of RL23 has it moving 3116 fps with single digit ES. Having a little trouble with the first round fired. See attached photo:

View attachment 368662
First round is always a bit off. Waiting 1-2 minutes between rounds, Any thoughts on how to get this tightened up?

24" proof barrel on a Pierce titanium action.
First shot was cold bore on a clean barrel, I take it?
 
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