The 25 sst...up and running

Haven't tried rl26 in mine but n565 is treating me good. I'd start around 56-58 with new brass if you're shooting the blackjacks with it. Shot very few 128 hammers in mine just messing around and they showed more pressure so I'd drop a couple grains from that with them.
 
That'd be pretty awesome! Especially with a big hollow point for the splat. Gonna lose speed quick but most of the calling I do is pretty close quarters anyhow. I'm working on a much lesser calling gun. Gonna do a bugholes prefit 223ai with a nut setup to shoot 40's or 50's at the heaviest with an 18" rem varmint contour on my factory 700 vssf. First non sherman I've done in a long time but similar in design I guess. Also first time of doing a prefit and setting headspace.

The goal would be 400-450 holding on fur. I run 35gr Bullets at 3750 fps in my standard 223rem but the 40-50gr bullets hold up much better in the wind as the ranges get past 300-400 yards. I've been tempted to try bug holes system, seems to be a good set up. But I'm going to go with the switch lug from WTO eventually. Ive have had 3 of Claytons lugs in the closet for about 3-4 years now just never have used one yet. I've been wanting a 16" Ruger American ranch rifle in .223 lately to run my suppressor on with light bullets. I think it would be a great inexpensive calling setup for a couple hundred yards.
 
Rl-26 worked well for me with the ACE's and the 92gr HH's. N565 is good stuff as well.
 
Haven't tried rl26 in mine but n565 is treating me good. I'd start around 56-58 with new brass if you're shooting the blackjacks with it. Shot very few 128 hammers in mine just messing around and they showed more pressure so I'd drop a couple grains from that with them.
Thanks. I've got 300 131 Blackjacks in hand so I'll go with the N565. Yes, all new brass from Rich.
 
Haven't tried rl26 in mine but n565 is treating me good. I'd start around 56-58 with new brass if you're shooting the blackjacks with it. Shot very few 128 hammers in mine just messing around and they showed more pressure so I'd drop a couple grains from that with them.

Did you happen to monitor the velocity when you shot the 128s, 24" bbl right?
 
Did you happen to monitor the velocity when you shot the 128s, 24" bbl right?
Yes 24". I shot a couple at the same 60.6 of 565 that I shoot the blackjacks at and had a sticky bolt. No velocity on that. Shot three at I believe 58.5 or 59 and would call that close to top working. If I remember right it was around 3150-3180. I didn't write it down though
 
Seems just a tad slow going off the other hammers I've tried in my bbl, but I haven't tested the 128s yet. And still the 128s at 3150 will be plenty effective.
 
Did some testing with the 90gr Absolute Hammers yesterday.

25SST
26"
1&7
CBTO 3.261 -.001"
COAL 2.750
NT .001
Fed 210
ADG Brass
87*
90gr Absolute Hammer


RL26

60 3586
61 3660
62 3687 ej mark
63 3750 -
64 3805 -
65 3849 - ~100% load density
66 3903 -
67 3980 - out of room for powder


H4350

54 3528
55 3566
56 3612
57 3654
58 3698
59 3759
60 3796 ej mark
61 3855 -
62 3915 -
63 3977 - bolt lift ~95% load density

Shot 3 shot groups at 100yds with H4350 in .5gr increments from 59-61.5gr. Almost all groups were around half moa except for 61gr at 1". Testing was done with a suppressor attached.

Best group was .4" at 59gr with a velocity of 3760. Brass lasted 8 firings here.

61.5gr shot .6" at 3880 fps. Brass lasted 3 firings.

H4350 looks like a good powder for this case. For the conditions 9cl 12mph wind and slight mirage I thought they shot pretty good and should do much better in more ideal conditions. Not to mention the round count on my barrel is pretty high. Definitely a step up in velocity from the 92gr HH's I tested last year.

I started pressure testing H4895 also but haven't finished yet. It looks like it will be to fast for this combo with a lower load density to. Should finish out 100-200 fps behind h4350

Also had a 3/4" hard-end steel plate at 100yds that I put a 90gr hammer into at 3900fps just for the heck of it. It almost made it all the way through!

Now I just need to test them out on game.
 
What do you think the barrel life would be with something like this? 3760-3900 FPS that's just crazy speed. Would be a great point and shoot deer gun and yotes
Did some testing with the 90gr Absolute Hammers yesterday.

25SST
26"
1&7
CBTO 3.261 -.001"
COAL 2.750
NT .001
Fed 210
ADG Brass
87*
90gr Absolute Hammer


RL26

60 3586
61 3660
62 3687 ej mark
63 3750 -
64 3805 -
65 3849 - ~100% load density
66 3903 -
67 3980 - out of room for powder


H4350

54 3528
55 3566
56 3612
57 3654
58 3698
59 3759
60 3796 ej mark
61 3855 -
62 3915 -
63 3977 - bolt lift ~95% load density

Shot 3 shot groups at 100yds with H4350 in .5gr increments from 59-61.5gr. Almost all groups were around half moa except for 61gr at 1". Testing was done with a suppressor attached.

Best group was .4" at 59gr with a velocity of 3760. Brass lasted 8 firings here.

61.5gr shot .6" at 3880 fps. Brass lasted 3 firings.

H4350 looks like a good powder for this case. For the conditions 9cl 12mph wind and slight mirage I thought they shot pretty good and should do much better in more ideal conditions. Not to mention the round count on my barrel is pretty high. Definitely a step up in velocity from the 92gr HH's I tested last year.

I started pressure testing H4895 also but haven't finished yet. It looks like it will be to fast for this combo with a lower load density to. Should finish out 100-200 fps behind h4350

Also had a 3/4" hard-end steel plate at 100yds that I put a 90gr hammer into at 3900fps just for the heck of it. It almost made it all the way through!

Now I just need to test them out on game.
 
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