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Introducing the Absolute Hammer
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Joemac6324
Active Member
Does anyone happen to have any load data for the 129 grain absolute hammer in 6.5 PRC? I have looked just about everywhere and can't seem to find anything on it. Any suggestions would be very welcome also. My rifle has a 1:7.5 twist rate with a 24" proof barrel. I think I have a stock of most powders that one could use for it. I am trying to take the warning from hammers web site seriously where it states that you have to be careful in how these are loaded with powder weight.
6.5 PRC (Eric H) 123 24" Proof New ADG CCI 250 2.947 StaBall 6.5 59.3 59.5 3340 3370 ES 24, SD 12, 0.5 MOA Ejector mark, heavy bolt lift CCI 250 2.956 Superformance 61.8 3420 Light ejector marks and bolt lift. Re-test 61.2- 61.5. ES was only 6 fps. CCI 250 2.947 H4831sc 59.6 3220 Ejector and bolt CCI 250 2.947 H4350 56.6 3245 Ejector and bolt 6.5 PRC (B LOT Banga) 123 26" Factory Brown 1:7 New ADG CCI 250 2.965 H100V 54.0 59.5 3247 3514 Bright ejector mark 6.5 PRC (CMP70306 123 24" Proof Prefit Fired ADG F 210 & CCI BR-2 ???? H100V 58.2 3380 0.5 MOA, 10 rounds down new barrel
It's in the Absolute Hammer Load data thread post #2
Ive been loading the 123gr AH for a couple months now and it appears that the Hybrid 100V / StaBall 6.5 is the ticket for those. If anything for the 129gr I would take a look at the slightly slower powders in the Superformance range. Superformance would work but I have found it to be highly temperature sensitive to the swing of over 100 fps from 30 to 80 F.
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N550,n555, rl 19, 4831 4831 sc, ramshot hunter are all just a couple notches slowers than h100v. I will be trying n555 with my 6.5 Sst. It runs the 131 hammer hunters to 3250 with rl23, accuracy was at 3200.
Joemac6324
Active Member
I did read the load data post. I just didn't see anything for the 129 grain AH. I did see all the load data for the 123 grain AH, but I was told not to use that data because it could be pretty far off with just that six grain difference in bullet weight. Steve recommended I try RL 26, but once again he did warn me to be careful with it. Do y'all think I could just start out with with 123 AH load data for powder charge? Maybe a few grains less or a few grains more? Thanks for all the help so far!
Joe
Joe
Start a little lower and work up to pressure for the heavier bullet
uncle_motorhead
Well-Known Member
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- Oct 21, 2008
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Taper thread the flash hole from the top, thread a tiny brass tube (like an old ink refil, but smaller) the same thread 3/4 the length of the case long. Cut a tiny slot in the top to be able to screw it in. I put a dab of super glue on the threads b4 install. This requires a 100% full case of powder to work. Big military shells use this as well as low flash rounds. The powder mostly burns in the case. Also since the powder burns in the case, and not being accelerated bouncing down the bore, the barrel stays cooler, there is less recoil, your throat lasts longer, and your extreme velocity spread is much reduced. This being said. It is a pain in the a. I no longer do it. I could get no increase in velocity. Look up Rocky Gibbs Cartridges and Front Ignition Loading Techniques. Some info can be found in one of the Cartridges of the World books. I even put a few gr of pistol powder on the bottom to see if I could boost velocity a bit. After a year of playing, I decided I had better things to do. Things I noticed (30-378)... Ejected brass was way too hot to touch, felt recoil was less, my barrel did not heat up after 5 shots, and my fps ranged from 4025 to 4035 for a 130 gr HBN coated 130 gr TTSX. 110 gr RL22. Without the flashtube 113 gr RL22 ranged from 4020 to 4055 fps. Both shot in the 3/4 inch range with 2 holes touching.
JakeC
Well-Known Member
I'm building a 7 saum and the VV N555 caught my eye too. How does a guy go about getting data matching a brand new powder to a functionally off-market cartridge? VV has some data for the 284, would it work to start midway on that info and go up from there? I'm building around 180s so the 555 is probably too fast to be ideal but I like the idea anyway.
QuietTexan
Well-Known Member
Did you ever run another load in the 300 RUM with the 178 AH? I just ordered a box of 50 yesterday, and I have RL26 but also H1000 and a few other slow magnum powders.
I didn't see much in the thread with the load data, you @ 94.5gr of RL26, and RocKMtn at 97grs of I guess all three of the powders he listed.
MagMan
Well-Known Member
I didn't do any more with it. Basically just velocity testing.
QuietTexan
Well-Known Member
I'll admit I'm impressed so far. I might have to clean my cases deserve these things.
Absolute works of devastating Art
Nomosendero
Well-Known Member
They are pretty!
