First Experiences with the 6SLR
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6mmSLR
Stiller TAC30, Krieger 1:7.5T 28", Alpha Type 2 mags, A4, 5.5-22 NXS.
Powder H4831sc
Berger 105VLD Hunting
Remington cases
Federal LRM primer
I started with loads from this forum from other users, and it looked like 43.5grains of H4831 was the in thing. It was slow in my rifle at 2940fps. I now run 45 grains and velocity is at 3070fps. I have no pressure signs at all. The accuracy appears to very good, but I have not shot the rifle in a match yet. 2 weeks I will know.
I ran a ladder test from 43.5 to 46 grains shot over a chrony. The node on the test appeared to be around that 3020-3080fps.
I found it likes 5 thou off lands from very first touch.
I really like the 6mmSLR. Is solves a few problems, and right now is looking pretty darn accurate!
Here is a picture of 8 rounds fired at 300m. High shot cold/clean bore, low shot the driver. the remaining 6 shots have very very little vertical, which I like to see! Shot from Harris bipod.
The rifle
I have not tried H1000 due to seeing how much 45 grains of H4831sc filled the case. It seems to be the powder for it!
Cheers
NOTE: these are my loads so start lower.
Stiller TAC30, Krieger 1:7.5T 28", Alpha Type 2 mags, A4, 5.5-22 NXS.
Powder H4831sc
Berger 105VLD Hunting
Remington cases
Federal LRM primer
I started with loads from this forum from other users, and it looked like 43.5grains of H4831 was the in thing. It was slow in my rifle at 2940fps. I now run 45 grains and velocity is at 3070fps. I have no pressure signs at all. The accuracy appears to very good, but I have not shot the rifle in a match yet. 2 weeks I will know.
I ran a ladder test from 43.5 to 46 grains shot over a chrony. The node on the test appeared to be around that 3020-3080fps.
I found it likes 5 thou off lands from very first touch.
I really like the 6mmSLR. Is solves a few problems, and right now is looking pretty darn accurate!
Here is a picture of 8 rounds fired at 300m. High shot cold/clean bore, low shot the driver. the remaining 6 shots have very very little vertical, which I like to see! Shot from Harris bipod.
The rifle
I have not tried H1000 due to seeing how much 45 grains of H4831sc filled the case. It seems to be the powder for it!
Cheers
NOTE: these are my loads so start lower.
Gave the 105 Hybrids a try today in my 243 SLR. Ran everything over the chrono and on targets at 100 yds.
Bbl is a Bartline, 5R, 7.5T 30 inches long. This is an NRA LR Prone rifle. I have the long throat chamber for the 115 gr bullets.
Shot off a shaky wood bench but in pretty fair conditions. Temp today was pushing 80 degrees, sunny with a very light breeze. Chrono was an Ohler 35P at 10 ft.
All bullets were Hbn coated.
Shot my control load first which is 115DTAC and 43.5 gr H4831sc in Win brass with Russ primer. 2950 FPS. Nice little round group measured at .350"
Ran the 105 Hybrids from 44 gr up to 45 gr. in .5 gr increments with the bullets seated .010" short of the lands.
44 gr ran 3050 fps, 44.5 gr ran 3100, and 45 ran 3135 fps.
44 and 45 gr loads had very little vertical. Averaged in the high .400s to low .500" groups with high and low shots. Some of that could be me as the old wooden benches are not real solid.
45 looked pretty close to max in my rifle, primers were getting pretty flat.
On a warmer day in the Summer, that load would be on the edge and running 3150 fps.
None of the Hybrid groups were as small as the 115 DTACs though. That is still my go-to load so far.
Going to shoot the Hybrids in a 300-500-600 yd match in Memphis end of the month and will see just how they perform.
RGDS
Bob
Bbl is a Bartline, 5R, 7.5T 30 inches long. This is an NRA LR Prone rifle. I have the long throat chamber for the 115 gr bullets.
Shot off a shaky wood bench but in pretty fair conditions. Temp today was pushing 80 degrees, sunny with a very light breeze. Chrono was an Ohler 35P at 10 ft.
All bullets were Hbn coated.
Shot my control load first which is 115DTAC and 43.5 gr H4831sc in Win brass with Russ primer. 2950 FPS. Nice little round group measured at .350"
Ran the 105 Hybrids from 44 gr up to 45 gr. in .5 gr increments with the bullets seated .010" short of the lands.
44 gr ran 3050 fps, 44.5 gr ran 3100, and 45 ran 3135 fps.
44 and 45 gr loads had very little vertical. Averaged in the high .400s to low .500" groups with high and low shots. Some of that could be me as the old wooden benches are not real solid.
45 looked pretty close to max in my rifle, primers were getting pretty flat.
On a warmer day in the Summer, that load would be on the edge and running 3150 fps.
None of the Hybrid groups were as small as the 115 DTACs though. That is still my go-to load so far.
Going to shoot the Hybrids in a 300-500-600 yd match in Memphis end of the month and will see just how they perform.
RGDS
Bob
Bob
Looking forward to the results from that match. I believe you will see more improvment with the groups on thehybrid once you play with the seating depth a little. I think for me the hybrid will give me another chance at shooting the Super X ( SLR) at long range. When Iget home Im going to screw that barrel back on and give it a go there in Memphis and at 1000 yards in Little Rock. Im pretty excited with everyones results so far. Are you going to shoot the SLR both days?
Thanks for the report I eagerly await the results.
Russ Theurer
Looking forward to the results from that match. I believe you will see more improvment with the groups on thehybrid once you play with the seating depth a little. I think for me the hybrid will give me another chance at shooting the Super X ( SLR) at long range. When Iget home Im going to screw that barrel back on and give it a go there in Memphis and at 1000 yards in Little Rock. Im pretty excited with everyones results so far. Are you going to shoot the SLR both days?
Thanks for the report I eagerly await the results.
Russ Theurer
Shucks... I was hopping to see some real world string shooting results. Maybe Keith Perry will show up from Alabama, he has been shooting the SLR as well. Not sure he has played with the Hybrid bullets yet.
Agreed about the BR case at 600 yards. It would be hard for me to disagree with the results I have had with it. Though Last years National Record I set with a new ( at the time) 308. Because I forgot my rear sight on my Smallbore gun for the 6BR!!! Ooops. Good thing I had two guns inthe car.
Hope the weather cooperates this year. And best of luck to you.
RT
Agreed about the BR case at 600 yards. It would be hard for me to disagree with the results I have had with it. Though Last years National Record I set with a new ( at the time) 308. Because I forgot my rear sight on my Smallbore gun for the 6BR!!! Ooops. Good thing I had two guns inthe car.
Hope the weather cooperates this year. And best of luck to you.
RT
H4350 anybody?
6SLR, 30' Brux, Borden Rimrock glued, Tooley MBR.
Have 140 rounds for load development focusing on Lapua brass and 107smk & 105vld's, ( green box vs. yellow!) Did ladder tests with H4350, H4831sc, and RL17 with Russian primers. I prefer 4831sc but H4350 consistently has the lowest single digit SD's and loads average 3140' with no pressure signs. I did find a lower node @ 2975' but why have a 6 Super if you aren't going to use all its attributes!! Sorted bullets consistently high teens @ 100 and under .75 @ 200. Need to test out to 600 to confirm. After 1200 rounds through my 284 last season the 6SLR will be a joy to shoot at f-class midrange. Curious if H4350 is working for anybody else? Eric in DL.
6SLR, 30' Brux, Borden Rimrock glued, Tooley MBR.
Have 140 rounds for load development focusing on Lapua brass and 107smk & 105vld's, ( green box vs. yellow!) Did ladder tests with H4350, H4831sc, and RL17 with Russian primers. I prefer 4831sc but H4350 consistently has the lowest single digit SD's and loads average 3140' with no pressure signs. I did find a lower node @ 2975' but why have a 6 Super if you aren't going to use all its attributes!! Sorted bullets consistently high teens @ 100 and under .75 @ 200. Need to test out to 600 to confirm. After 1200 rounds through my 284 last season the 6SLR will be a joy to shoot at f-class midrange. Curious if H4350 is working for anybody else? Eric in DL.
Deano-
An awesome little round it is. I'm sure I've walked by you on the firing line up at the "Forks". Shot my 284 all last season and the 6 Super is such a joy to shoot, excellent mid-range gun. I plan on showing up some on Sundays for the f-class league. I too have been thinking about a blended powder mixture but haven't had the time to really pursue it like I should. H1000 is one powder I haven't ladder tested..maybe later in the season. Wind clinic in ERSC is coming up oh so soon!! Eric in DL
An awesome little round it is. I'm sure I've walked by you on the firing line up at the "Forks". Shot my 284 all last season and the 6 Super is such a joy to shoot, excellent mid-range gun. I plan on showing up some on Sundays for the f-class league. I too have been thinking about a blended powder mixture but haven't had the time to really pursue it like I should. H1000 is one powder I haven't ladder tested..maybe later in the season. Wind clinic in ERSC is coming up oh so soon!! Eric in DL
I shot my SLR barrel in the team shoot this weekend in Memphis at 600 yards. It was a 20 shot string with 2 sighters. I shot a 196-6xs with the 105g Hybrid and 43.5g H4831SC. That load held the X ring for elevation, but I missed a few wind switches.
It just continues to shoot.
Will check back in when I shoot another string.
It just continues to shoot.
Will check back in when I shoot another string.
Berger recommends 1:7 for their 115VLD. I know for sure they don't work well at all in a 1:8 Schneider or 1:7.5 Pacnor.
You may need to try them in your rifle to learn for certain. I'd suggest you try for an accuracy node at a relatively modest velocity though, perhaps 2,700 fps then work up. If faster means losing them downrange you can always back off this way.
You may need to try them in your rifle to learn for certain. I'd suggest you try for an accuracy node at a relatively modest velocity though, perhaps 2,700 fps then work up. If faster means losing them downrange you can always back off this way.
If you have a 1:7.5, don't bother with the 115 VLD. They offer no ballistic advantage over the 105 Hybrid and the 105 can be driven faster. Anything will work for break in, no sense in wasting the Bergers.
I shoot 115 JLK's in a 30" 1-7.75" Krieger and they work just fine. I'd need to check my log book, but 197-9x or better at 1K has been shot on several occasions at both Fort Knox, Camp Atterberry and Camp Perry. The cartridge is so simple, most people try and over think it.
I hope this helps,
Lloyd
I hope this helps,
Lloyd
[br]Nomad47 said:
Bryan Litz told me that the bullet was designed for 2800 fps in an 8" twist. 8.5 is probably a little too slow. It is worth trying a few.
JohnMill
Gold $$ Contributor
If it poofed at the end of a 20 round string, I would not make an over riding decision on it. And I would check and see if that guy with that rifle has that problem very much as the rest do not seem to. Lotto factors. I would suspect 3250 with a 30" based on my reading of Henry's and Bergers experiments of some years ago.
As an aside; You do know that A maxes are not meant for varmints, even if they work well? My opinion (only) they are meant for maximum accuracy over long strings of fire, non of which takes place at 3250.
Hope this is food for thought.
John
Remember the fighting men and women
As an aside; You do know that A maxes are not meant for varmints, even if they work well? My opinion (only) they are meant for maximum accuracy over long strings of fire, non of which takes place at 3250.
Hope this is food for thought.
John
Remember the fighting men and women
JohnMill said:
I didn't know the AMax was meant for long strings of fire. Learned something today - good. However, I DO know they are devastating on groundhogs - I killed 368 of them last year with the 105 AMax. And the bullets are cheap.
I know the rifle in question. I sold it this spring and it is the rifle I shot all those groundhogs with. It is a 243WSSM. Shooting Chrony says velocity is 3170 fps, JBM Ballistics says it is 3250 fps. It was a hot day - 90 degrees. And it was the 18th shot in a steel competition, but there was at least 20 minutes between shots 6 & 7 and shots 12 & 13. Gun & ammo was kept in the shade.
I have no intention of shooting anything heavier than a 105 in a 6SLR, so why get an 8 twist if I don't need it.
JohnMill
Gold $$ Contributor
To clarify: I believe the A Max was developed to compete with the Match King straight across, Camp Perry/F class/ Long Range (I can be mistaken) leading to my comment.
As to your use, you are entirely correct in that if you don't need it don't buy it. However I believe that there is source material that indicates most slower than 8 twist barrels require reaching another velocity plateau that the 6SLR is incapable of reaching.
I think it bears repeating here that the real value of the 6SLR (and the 6CM) is reaching a reliable accuracy node while using slower than usual burning-rate powder leading to longer than usual barrel life. The further away from that concept we get the more attractive (useful) other cartridges become. But maybe that's just me.
John
As to your use, you are entirely correct in that if you don't need it don't buy it. However I believe that there is source material that indicates most slower than 8 twist barrels require reaching another velocity plateau that the 6SLR is incapable of reaching.
I think it bears repeating here that the real value of the 6SLR (and the 6CM) is reaching a reliable accuracy node while using slower than usual burning-rate powder leading to longer than usual barrel life. The further away from that concept we get the more attractive (useful) other cartridges become. But maybe that's just me.
John
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