New #2231 200gr SMK for F/TR

[Ilya S.]

10x, have just added, and get a nice theoretical results :
"32 tube, 3.180 coal(+0.100 to my 200.20x load), 44.0 grn Varget, 2670fps and 4245 bar pressure(bullet with jump, dont touching or jamming the lands)

If someone wanna play with it, just open your C:\Users\username\Documents\QuickLOAD\data\bullets\sierra.bul with notepad and add this line :
".308, 200, Sierra HP MatchK 2231 2018 ","200","1.591","6.10","7.82","6.53","G1","2",".308",".715",".715",".695",".660","","","2000","1720","","","","25"
in the end of it.

 

[Zero333]

10x, have just added, and get a nice theoretical results :
"32 tube, 3.180 coal(+0.100 to my 200.20x load), 44.0 grn Varget, 2670fps and 4245 bar pressure(bullet with jump, dont touching or jamming the lands)

If someone wanna play with it, just open your C:\Users\username\Documents\QuickLOAD\data\bullets\sierra.bul with notepad and add this line :
".308, 200, Sierra HP MatchK 2231 2018 ","200","1.591","6.10","7.82","6.53","G1","2",".308",".715",".715",".695",".660","","","2000","1720","","","","25"
in the end of it.

Thank you !

Worked like a charm

 

[308BAR]

Load data is up.

https://sierrabulletsblog.com/2018/01/31/sierra-bullets-load-data-for-2018-new-matchking-bullets/

 

[Ilya S.]

Load data is up.

https://sierrabulletsblog.com/2018/01/31/sierra-bullets-load-data-for-2018-new-matchking-bullets/

they make a error in 308 WIN 2231 200 grain COAL - with 3.700 in 308 case, bullet will be in air

 

[Bulletman]

That is the OAL for the 300 Win Mag inadvertently placed on the 308 data. It is being corrected. Thank you for noticing the error.

 

[Zero333]

I noticed the same thing and figured they messed up.

 

[Ilya S.]

It is being corrected

nice one

 

[uashooter]

Left to right, 200.20x, SMK 2231, and 198 grain Warner FlatLine

MidwayUSA had them.

 

[Nature Boy]

I shot a “Cortina” with these this morning using H4895. Varget may be a better powder but there might be a node between 41.0-41.5? No signs of pressure even finishing at +2.0g over Sierra’s max.

My thought at this point is these may not be practical in my rifle. I touch the lands at 3.070”. Even backing off 0.070” like I did here they won’t eject out of the Mausingfield action I’m using. I think I’ll still pick a load that has the best chance and see if they are stable at 500 yards through my 26” Bartlein 1:10 5R

Opinions?

 

[Zero333]

I shot a “Cortina” with these this morning using H4895. Varget may be a better powder but there might be a node between 41.0-41.5? No signs of pressure even finishing at +2.0g over Sierra’s max.

My thought at this point is these may not be practical in my rifle. I touch the lands at 3.070”. Even backing off 0.070” like I did here they won’t eject out of the Mausingfield action I’m using. I think I’ll still pick a load that has the best chance and see if they are stable at 500 yards through my 26” Bartlein 1:10 5R

Opinions?

Look at point of impact between the groups.

39.5 & 40 have same POI

40.5 & 41 have same POI

 

[paulT]

Any updates with how this bullet is performing at Long range for FTR with loads & velocity nodes etc thanks.

 

[XTR]

Any updates with how this bullet is performing at Long range for FTR with loads & velocity nodes etc thanks.

you aren't going to see much yet. They weren't officially announced till the shot show this yr, and they need a 1:9 to shoot well out to long range. Not many people have had the chance to test 'um out.

I got 500+ and have an initial velocity test with 3 powders loaded up to go as soon as the 16" of snow we got yesterday is off of the ranges, but that's as far as I've gotten.

 

[Jdne5b]

They shot great in a couple 1:10s at Berger SWNs. 1:9.5 should give the full BC.

 

[Nature Boy]

Any updates with how this bullet is performing at Long range for FTR with loads & velocity nodes etc thanks.

I gave up on it. You'd need a long action to be able to eject a live round, or an extra big port, or defeat the ejector and remove the bolt to clear the rifle. Too impractical for me.

 

[XTR]

I gave up on it. You'd need a long action to be able to eject a live round, or an extra big port, or defeat the ejector and remove the bolt to clear the rifle. Too impractical for me.

I haven't been able to eject a loaded round with out pulling the bolt on my F-TR rifles since 2014 when I quit shooting 185s.

 

[Nature Boy]

I haven't been able to eject a loaded round with out pulling the bolt on my F-TR rifles since 2014 when I quit shooting 185s.

I guess that's the price to be paid for 600-700 BC in a 308 package.

I'm new to all of this so I'm learning as I go

 

[memilanuk]

I haven't been able to eject a loaded round with out pulling the bolt on my F-TR rifles since 2014 when I quit shooting 185s.

Really? I can still (just barely) eject a loaded round with a 200.20X... seated long for a 0.170" FB chamber...

 

[XTR]

Monte, when I went to the 200H I started using my unithroater. Most of my rifles have freebores in the range of 200 or more I have one faster than 10 twist barrel that I chambered up with a 125 or so for the 200 Jack, and it looks like this bullet will work in it too. THese would not reach the lands with out falling out of the case in any of my other barrels

 

[uashooter]

I ran some 2231s last weekend. I chose a kind of strange experiment - trying to get to node 4 (1.368ms in a 30" barrel) using rather compressed loads of RL-26. I've chased that node in about four different ways with at least four different bullet types and three different powders, it's a bit of a grail search for me. It's been about as successful as most folks grail searches, too. I have a long throated 8 twist 30" heavy contour for F-TR.

The experiment looked barely plausible in QL, but chrono'd about 45 fps shy when I ran out of seating compression 'courage' at ~115%. No pressure signs in Lapua Palma in my gun, YMMV will vary. These implied loads may not be safe in your gun, work up from low, low, low, Please. I had achieved the 'half node',(halfway-ish between 1.368 and 1.532) based on point of impact and rather consistent group size, from somewhere around 2630 fps to at least 2680 fps, and perhaps more. In theory, the 1k wind drift with the 2231s is about 10% better than 200.20x's at the half node speeds, so I guess I will probably go back at them with H4895 2575 to 2675 fps and see what I can dial in. There's no doubt that the Warner flatline 198s are the drift champs, they are like another 10" better - presuming you can stand the cost and their tuning oddities.

 

[Ned Ludd]

You can hit Node 4 out of a 30"+ barrel with a 200 gr bullet and either Varget or H4895. The real questions are how much pressure you are willing to run continuously in your Palma brass, and how much recoil can you manage and still shoot with good precision. Pressure-wise, it will probably take in the neighborhood of 64K - 66K psi, at least, as predicted by QuickLoad.

In my hands, the QL MAX pressure values for .223 Rem and .308 Win, and how close to them I run loads, have always correlated quite well to brass life with .223 Rem and standard .308 brass. However, the upper pressure limit for Palma brass is a different story. With the extra metal in the case-head courtesy of the small primer pocket, the upper pressure limits for Palma brass are clearly much higher than for standard .308 brass. How much higher is a question best left up to the individual to decide for themselves. Of course, if you can't keep your vertical to a reasonable minimum with 200 gr .308 bullets traveling at 2700+ fps, pressure really won't be an issue because you'll lose so many points you'll figure out pretty quickly you can't manage the recoil.