6SLR questions

[XTR]

That was with the 6mm slr/s reamer. (It is the short throat). It works well with the 105 class bullet.


Xdeano

This is in a bolt gun. Is "6mm slr/s" a name that Kiff has for the reamer?

 

[xdeano]

Yeah mine's a bolt gun 24". Yeah call up Pacific Tool and gauge and ask for it.

The JGS reamer drawing are here;
http://6mmar.com/Super_LR.html

#1307

hope that helps.

Deano

 

[Cakes]

FYI- Had one of those prints modified for neck turn and 115's. JGS#1303, .272 nk, 120fb. I run 107smk's very accurately out of a 28" + Borden action, 41.4/H4350, 20 jump=3130', ES ave-10. Switched to Dtacs several years ago as they bucked the wind much better and were just as accurate @ 600. 44.4/H1000, 10 jam=2935', ES ave. 8. Bartlein 7.5 twist and could never get the 105 Hyb's to shoot. Barrel just went over 1500 rounds on it and still shooting very well and should make it to 2000 by end of summer. Have used Lapua brass from day one as it was IMO just a tad more accurate than R-P and donuts have not been a issue. Anneal every 3rd and most have 15+ firings on them. Actually just shot a 3 shot .047 group @ 200 couple of nights ago with some pretty old brass & dtacs so ya never know! Good Luck, Eric in DL

 

[XTR]

In reading more here about 6mm's in general (not just the SLR) that suggest that to get a good seating depth on the 105 hybrid you'd want at least the 120 FB in the 1303 drawing.

YI- Had one of those prints modified for neck turn and 115's. JGS#1303, .272 nk, 120fb.

Do you remember (or anyone for that matter) the OAL if you load the 105s to the lands in a 6SLR case with 120FB? Is it something that will work at mag length (2.92 in an Alpha type one or 2.965 in a type 2) ?

 

[Rtheurer]

Deano

Tried some Retumbo on mine last week " just Cause". Really got alot of Velocity out of it but no real good groups. It was intresting to see over 3200FPS with a super full case of Retumbo. Flicked the bolt open like it was Virgin brass. Naked 105 Hybrids off the lands. Just did not shoot all that well at 600 yards.
Just for Ships and giggles I might load it down to around 3100fps ish just to see how it goes. Had to Vibrate the case to get 50gr of Retumbo in there....

Russ T

 

[xdeano]

Russ,
I know retumbo will get the velocities up pretty decent. I was actually surprised at what it would do myself. I to find get that great of spreads when running it through the Chrony. I may have to play with a bit more for grins also. Just hard not to use h1000 for the low numbers. Single digits if I do my part.
Xdeano

 

[racesnake]

Just finished rechambering a barrel to 6slr. Fire formed with 46.0 gr of H1000. No evidence of excessive pressure. First 2 five groups measured .376 and .351 @ 100yds so it looks like this is a shooter. My chrono shot craps so l don't know what velocity I was getting. Bullets were 105 vlds. What H1000 powder weights are you folks using?

 

[Nomad47]

Just finished rechambering a barrel to 6slr. Fire formed with 46.0 gr of H1000. No evidence of excessive pressure. First 2 five groups measured .376 and .351 @ 100yds so it looks like this is a shooter. My chrono shot craps so l don't know what velocity I was getting. Bullets were 105 vlds. What H1000 powder weights are you folks using?

105 Hybrids, 46.84 or 46.86 grains of H1000, 210M primers, .029 off jam. 30" 8 twist Krieger. 3150 MV.

That load took 2nd place at last month's long range steel match at Rayner's Range.

 

[racesnake]

Thanks for the info, nomad!

 

[Rtheurer]

Deano

Did a Ladder test at 600 yards and took some pressure readings on H1000 today. Pretty intresting stuff. I believe You said your two Nodes where 44.4 and 47.8. Mine look to be real close to yours. Not uncommon to be left or right of your testing as your using quite a bit shorter tube than I am.
Went up to 48Grains of H1000 and that looks like it would be getting close to Max for pressure in my rifle,Bullet,Primer combo.
The upper Node at 47.0 to 47.4 Looks like it might be worth testing agian so I put some together to restest that area. It has perfect case fill at right around 100%. Im hopeful that it will work out. It will have to out shoot my H4831SC Load.
I attached my 600 yard Ladder test.

RussT

 

[xdeano]

Russ,
I'm right at 47.4 of h1000, it is a hammer. Most accurate rifle I've ever owned.

Nice ladder by the way. you might have a chance at putting more plaques on the wall. Or maybe build another wall to hang them all.

Deano

 

[Rtheurer]

Made it out this morning to shoot the 47.12gr of H1000. Velocity is at 3095fps with a SD of 8fps. Had two rounds that where real slow for some reason, it messed up what was fixin to be some super low SD and ES numbers. The rest where looking real good. COnditions where ideal with just a wisper of wind drift and nice 65* temps. Shot 23 rounds total. Three Foulers to get centered up and 20 shots for record. Ill have to say that this thing shoots very well. On the 600 yard F class Target it scored a 200/8X or a 200-20X on the conventional target. No excuses for that rifle now. The Peak Chamber Pressure was right in line with my H4831SC load wich is real mild and has allowed me to reload my brass 5 times with just sizing with a neck bushing. Have not full length sized any yet and that is a great sign of lower workable pressure. Pretty happy about that. 3100fps is fast enough for me. Especially with a mild consistant accuarate load.
Looking forward to putting this load through its paces to confirm it holds true in the long run. 20 Rounds in the X ring with a dirty barrel ( 163 rounds on it since last cleaning) is looking good.

Next powders to test are going to be N160 again and H100V. Maybe some Superperformance just for ships and giggles.

RussT

 

[XTR]

Russ, how long is your barrel?

 

[Rtheurer]

30"

4 or 5 SLR's on the line this last weekend at the State Championship. Kinda neat. Most everyone else is shooting N160 at this time.

RussT

 

[Rtheurer]

Here is the target from the 20 round 600 yard test of H1000.

RussT

 

[xdeano]

Nice shooting Russ.

Deano

 

[XTR]

Another of my "keeping it all in one place" questions.

I would think the answer is yes, but can you use a Forster/Redding 243 seater for your 6SLR? The body is the same size so I would thing so but thought I'd post the question anyway.

 

[Changeling]

Isn't the 6SLR just a slightly larger (capacity) version of the 243 Winchester. :

 

[Judd]

Isn't the 6SLR just a slightly larger (capacity) version of the 243 Winchester. :

Less/smaller than 243.

It slightly pushes the shoulders down and makes a longer neck. I think it is just over a grain less capacity.

 

[Steve Blair]

Less/smaller than 243.

It slightly pushes the shoulders down and makes a longer neck. I think it is just over a grain less capacity.

[br]
To be clear, 6mm SLR shoulder angles are changed from 20° to 30° by rotating the angle at the body-shoulder junction. The body-shoulder dimension is not changed. It does have a little less capacity than a .243 but seems able to obtain the same velocity.