01-12-2024, 04:59 AM
Zinkin Wrote:Koda, are you still running these Hammers? I have a box of 129gn absolute hammer and 125gn hammer HHT and 80gn HHT in .264 to try in my 6.5 grendel and 6.5 PRC. Also bought a box of 200gn Power Hammer to try out in my .35 whelen. I do have a sortment of powders AA2520, 2808XBR, H4831sc, cfe223, N560, N565, N568, varget, Retumbo and 4350. I think I will try cfe223 and AA2520 first with these bullet first and work up a good hunting load. My PSA upper groups the AA129gr SST's pretty dang good. I also bought a couple of boxes of Barnes 100 and 120gn TSX and TTSX to try. How do these bullets group for you, like better slow, mid range or upper loads?
Yes, Im still running these hammers. Im getting 1moa.... if I understand what you mean Im running these at the upper end of pressure I think, with A2520 I havent found pressure but I am at 100% case fill so Im stopping there.
Since I last replied to this thread Ive tested H335 and HLVR with this 97gn Absolute Hammer (AH). On the H335 I hit major pressure trying to reach the same velocity I got with A2520. With HLVR I did not reach and pressure signs and like A2520 I reached case fill and got about the same velocity Im getting with A2520 so its a wash between those two.
I haven't tried any other bullets yet, guns not even a year old yet. Im very curious how your 80gnHHT works out if your using it in an AR? There is some uncertainty if the neck tension will hold it with only one drive band depending on COAL to fit an AR mag and cycle.
Here's a copy/paste of my pressure ladders for H335 and HLVR to add to the body of knowledge here:
H335 and HLVR pressure ladder with 97gn Absolute Hammer, 2.250 coal.
HLVR: (charge weight/ velocity)
29-2426
30-2554
31-2618
31.5-2679
32-2720
32.5-2773
32.8-2783
33-2806 (compressed)
33.2-2821 (compressed)
No pressure signs on all
H335:
28-2611
29-2698
30-2807 light swipe
31-2909 swipe and ejector mark
31.5-2946 heavy swipe and ejector mark, swipe had shaving burr come off.
31.8-2971 heavy swipe and ejector mark
32-2985 heavy swipe and ejector mark, did not eject from chamber. Stopped
none of these held the bolt open, all but 32gn ejected.