The 25 sst...up and running

[couesaddict]

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.

 

[CA48]

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.

 

[CA48]

Rl-26 worked well for me with the ACE's and the 92gr HH's. N565 is good stuff as well.

 

[J3n]

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.

 

[CA48]

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?

 

[couesaddict]

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

 

[CA48]

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.

 

[elkaholic]

Custom Shop Element

Chuck from Idaho reached out to us to build the ultimate lightweight hunting rifle for extreme backcountry hunts.

seekinsprecision.com

 

[couesaddict]

I'd say that's a pretty big milestone getting a company like seekins to chamber one of your creations. Congratulations Rich!

 

[elkaholic]

I'd say that's a pretty big milestone getting a company like seekins to chamber one of your creations. Congratulations Rich!

Thank you! It's just out of their Custom shop for now.

 

[Gstew1930]

This might have to be my next rifle!

 

[rockwallraider]

just got a blaser barrel spun up with 25sst
might be my favorite cartridge,
if you have a blaser then justin sip can make you almost any sherman you want as he already has most of the reamers

 

[CA48]

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.

 

[westcoasthunter]

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.