6gt

#1,551
4O6shootist said:
@Yondering I'm running the 112s 10k jump in my rifle, 309g7 was money to 880y perfect waterline at 2910-2920fps with 36.3gr H4350 from a 24" barrel. They shot equally as well at 100y at 36.6gr running 2950, but accuracy wasn't nearly as consistent on my targets at 660y and 880y.
Click to expand...

Ha! Crazy how similar our results are. And I was shooting 883 yards just this evening with that load too. I ended up at 6.1 mils for DA of 0 ft and 7° down angle to the target. Also shot at 538 yd for a better confirmation of velocity (9° down angle, 2.6 mils to waterline); the chrono said 2931 fps avg (SD of 6 - for my purposes I'll take it) on a warmer day but drops lined up a little better in the calculator tonight for 2920 fps. Need to confirm that some more but hits were pretty easy and consistent at both distances.

Thanks for the confirmation!
 
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#1,552
Yondering said:
Ha! Crazy how similar our results are. And I was shooting 883 yards just this evening with that load too. I ended up at 6.1 mils for DA of 0 ft and 7° down angle to the target. Also shot at 538 yd for a better confirmation of velocity (9° down angle, 2.6 mils to waterline); the chrono said 2931 fps avg (SD of 6 - for my purposes I'll take it) on a warmer day but drops lined up a little better in the calculator tonight for 2920 fps. Need to confirm that some more but hits were pretty easy and consistent at both distances.

Thanks for the confirmation!
Click to expand...
6gt is money with 105-112 gr bullets at 2950 with lighter bullets down to 2910 with the heavies. They all just shoot here. The low node is down around 2800-2830.
 
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#1,555
WyomingShooter said:
I've been using mostly Varget. What powder charge works best for you with the 112 MB?
Click to expand...
Reloder16 37.3 with 112MB's cci450 get me right at 2910fps with SD's below 5 here's a link below to my previous posts and this same thread:

www.snipershide.com

6gt

Im breaking in a new barrel with 32gr 4166 and 108bt bergers running 2780. They're jumping 70ish thou? Not certain but man does it shoot. My previous match load from old barrel with 109 lrht is shooting in the 2s and 3s. This hawkhill shoots better than the bartlein it replaced. I've settled on...
www.snipershide.com www.snipershide.com
 
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#1,556
ghostrider_OneOne said:
Reloder16 37.3 with 112MB's cci450 get me right at 2910fps with SD's below 5 here's a link below to my previous posts and this same thread:

www.snipershide.com

6gt

Im breaking in a new barrel with 32gr 4166 and 108bt bergers running 2780. They're jumping 70ish thou? Not certain but man does it shoot. My previous match load from old barrel with 109 lrht is shooting in the 2s and 3s. This hawkhill shoots better than the bartlein it replaced. I've settled on...
www.snipershide.com www.snipershide.com
Click to expand...

Wow. I’m getting 2920 with 1 full grain less than that; 36.3gr H4350, 112 MB, BR4.

What barrel length, is it short? I’m shooting a 26”.

Edit - sorry, big mistake; I was thinking H4350 while reading and typing RL16. Disregard please.
 
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#1,559
ghostrider_OneOne said:
you should also check for a carbon ring, I love RL16 but have experienced significant carbon ring issues. If you have a bore scope you should check it!
Click to expand...

Nah, it started that way with a brand new chamber that I cut myself, and hasn’t changed much.

But I’m some kind of idgit this morning, sorry. My load is for H4350; using RL 16 for the Creed not the GT, and was thinking one while typing the other.

Carry on…
 
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#1,560
ghostrider_OneOne said:
you should also check for a carbon ring, I love RL16 but have experienced significant carbon ring issues. If you have a bore scope you should check it!
Click to expand...
Switch to H4350 and you will never have to worry about it. Cheaper, more available, temp stable, meters well and none of the carbon ring issues like with RL and Varget. Its also versatile from 6GT to 300WSM and in between. Its the only powder I run for 6GT and 6.5CM and it shoots ridiculously well. Sub 4 SD's in every load I make.

You still need to clean but no where near as much. About every 300 rounds. Clean bore and let a mop sit in freebore for 20 minutes soaked with Eliminator. Never even the slightest buildup of carbon ring.
 
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#1,566
WyomingShooter said:
I've been using mostly Varget. What powder charge works best for you with the 112 MB?
Click to expand...

I got 2900fps with 34gn of Shooters World Precision Rifle. (Lovex version of Varget, just a little slower). I was probably knocking on the door of pressure...

I've been running a slower/softer 33gn of Shooters World Precision Rifle for 2804 @ 801degF using a 112MB (it performs just like a Dasher).

I've become a believer that there's something magical about powders in the Varget and/or Varger-like burn range.. they just make it so easy to get anything to shoot and get low SDs. I don't care or worry about carbon-ring issues since a borescope has become a must-have for me when cleaning a barrel.

I have a bunch of SWPR to use up, but next, I'm going to probably try the Vhit stuff, N140 and N150 are supposed to be great in Dasher and I've decided to treat my GT just like a Dasher and run middle-of-the-road speeds.
 
#1,567
I was discussing powders not too long ago with a guy who sells all kinds of powder. He mainly used VV and brought up an interesting point: Go back a few years when most powders were $30/lb, VV was kind of a boutique powder. But now that most domestic powders are in the $50/lb range, VV is not so gucci anymore. FWIW, I’ve been using N320 in pistol rounds for a long time…

That said, I’ve been using H4350 for my 6GT and 6.5CM for a while. Temp stable, available, not hard to work up a load, and I haven’t felt the need to change (I’d prob feel differently if I couldn’t find any). I did get a carbon ring in my 6GT after 1K rnds or so but cleaned it good, scoped the barrel to confirm, and since then I’ve paid more attention when cleaning.
 
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#1,568
Has anyone heard about Lapua making 6GT brass?

Screenshot_20240114-194148_Brave.jpg
 
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#1,570
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#1,575
Powder Valley is significantly cheaper on the Varget and massively cheaper on the Precision Rifle.


Larry Pootterfield can eat a bag a' dicks today.


PV for the win.



Never realized the Gay Tiger was gonna hurt this much.........








Image 9.jpeg
 
#1,576
DubfromGA said:
Powder Valley is significantly cheaper on the Varget and massively cheaper on the Precision Rifle.


Larry Pootterfield can eat a bag a' dicks today.


PV for the win.



Never realized the Gay Tiger was gonna hurt this much.........








View attachment 8337561
Click to expand...
Yeah it's fucked
Everything goes from $30/lb to $50 or $60, we're the reason why these fuckers get away with it
 
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#1,577
762 ULTRAMAGA said:
eah it's fucked
Everything goes from $30/lb to $50 or $60, we're the reason why these fuckers get away with it
Click to expand...



I can't help it.....shooting is my main hobby.

Ankle reconstruction & spine surgery took golf away.
Pending replacements on both knees & right shoulder have limited hunting.

Gave up drinking 5 years ago. Quit smoking 20+ years ago. I'm fukkin quitting cussin tomorrow..or next week.
Truck is paid off....got the title last month.

Still working 14 hour shifts like a beast.....pushing hard.

Guns, coffee, 4 more years of mortgage, wife's BMW payment and decent eats are where my money goes.....after taxes and retirement savings are handled.


FJB and the horse that Giggles Harris is sucking off.


I'm ready for some mean ass tweets, cheaper gas, $40 primers & $200 powder.


FJB & Gigglala.
Bastards.
 
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#1,579
4O6shootist said:
Midway has been sky high since mid 2021 with supplies first got scarce. They just added the new powder up charges(publicly announced by Hogdgon and others) to their already too high prices. Larry is a crook! Most us known that for a good while now.
Click to expand...

He seems to have been mighty smitten with WLP over the years.

That is enough to make me dislike him….but this powder gouging is nuts.
 
#1,581
Not completely done with load development but it’s looking damn good. Just need to bump up the charge weight a tad more.

Impact 737
Proof 1-7 comp contour @ 26.75”
.185 freebore
Alpha OCD brass
H4350
CCI 450
115 DTACS

5 shot groups at 500yds with 35.8grs of 4350

BTO 1.9935
2778 fps avg
9 fps ES
SD 3.5

BTO 1.9835
2776 fps avg
26 fps ES
SD 8.9

BTO 1.9735
2774 fps avg
14.9 fps ES
SD 5.1

This combo trued out right at 2794 on my Kestrel. The .190 freebore though is looking really good with the DTACS out of my gun and my sons so far. Looking for a load that puts it in the 2800-2830fps range.
Top to bottom on the IPSC is 1.9935-1.9735 BTO.
Total round count on the barrel is 206
IMG_5614.jpeg
 
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#1,582
drglock said:
Not completely done with load development but it’s looking damn good. Just need to bump up the charge weight a tad more.

Impact 737
Proof 1-7 comp contour @ 26.75”
.190 freebore
Alpha OCD brass
H4350
CCI 450
115 DTACS

5 shot groups at 500yds with 35.8grs of 4350

BTO 1.9935
2778 fps avg
9 fps ES
SD 3.5

BTO 1.9835
2776 fps avg
26 fps ES
SD 8.9

BTO 1.9735
2774 fps avg
14.9 fps ES
SD 5.1

This combo trued out right at 2794 on my Kestrel. The .190 freebore though is looking really good with the DTACS out of my gun and my sons so far. Looking for a load that puts it in the 2800-2830fps range.
Top to bottom on the IPSC is 1.9935-1.9735 BTO.
Click to expand...
I am doing a final test this weekend. 2 good charge weights. I will shoot 1k for water line, best verticle wins. OBT on upper load is 37.6. 36.4 is the other OBT, on the money. We will see. TL3 in JAE with ZCO and Xcaliber straight taper at 27" - .120 freebore and 1-7.5 twist. Alpha OCD brass and Fed 205m primers. I could see my heart beating in the scope when I shot the 37.5 group. It was getting warmer out and I am still not 100% post knee surgery. I think that load can shoot tighter. I was just not shooting my best. We shall see how this goes. These were 4 shot groups. Garmin Xero and labradar capture.

20240128_144131~2.jpg
IMG_20240129_184229_01.jpg
 
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#1,583
John Glidewell said:
I am doing a final test this weekend. 2 good charge weights. I will shoot 1k for water line, best verticle wins. OBT on upper load is 37.6. 36.4 is the other OBT, on the money. We will see. TL3 in JAE with ZCO and Xcaliber straight taper at 27" - .120 freebore and 1-7.5 twist. Alpha OCD brass and Fed 205m primers. I could see my heart beating in the scope when I shot the 37.5 group. It was getting warmer out and I am still not 100% post knee surgery. I think that load can shoot tighter. I was just not shooting my best. We shall see how this goes. These were 4 shot groups. Garmin Xero and labradar capture.

View attachment 8338861View attachment 8338862
Click to expand...
This will be the second year for me running the DTACS in a GT and so far I’ve been really impressed with them. To date I’ve shot my smallest 500 and 1000 yard groups with them. Last year I ran out of 109 ELDM’s halfway through the session and switched over to the DTACS. That barrel had a .120 freebore but was probably closer to a .150 from erosion when I made the switch. Even with the erosion I was below the neck shoulder junction and could only push them right at 2780 but it shot them lights out. That’s the reason this year we switched to the longer freebore.
 
#1,584
drglock said:
This will be the second year for me running the DTACS in a GT and so far I’ve been really impressed with them. To date I’ve shot my smallest 500 and 1000 yard groups with them. Last year I ran out of 109 ELDM’s halfway through the session and switched over to the DTACS. That barrel had a .120 freebore but was probably closer to a .150 from erosion when I made the switch. Even with the erosion I was below the neck shoulder junction and could only push them right at 2780 but it shot them lights out. That’s the reason this year we switched to the longer freebore.
Click to expand...
This barrel is still fairly new. I shot 110Atips at 2890 (37.7 N555) and was impressed with how flat they shot. I only had a few hundred but looked at all the high BC bullets available. I like Sierras too so DTACs were easy choice. I like heavier bullets shooting long range varmint silhouette matches, easier to see impacts at distance. I am right at or slightly into neck shoulder junction but not past it at .045 jump. .040 shot well too but .045 was slightly tighter, shot them both 3 times before settling on .045. I will go to the longer throat next barrel.
 
#1,585
So I've shot the 115 dtac out a few 169fb 6gt. One 26" the other pair at 28". Have a couple buddies running 26" too. The 26" barrels have all done really well around 2820-2840, my two 28" barrels have liked 2850-2870 range. Both achieved with 35.2-35.4gr H4350. Running 25-30k jump, anything deeper than 40k jump is going below the neck with bearing surface. I think I need to order a 190-200 freebore reamer.
 
#1,586
I’m a fan of the heavier DTAC115s/MB112s running a slow-ish ~2800fps in the GT… it’s like a Dasher, just throwing a bigger “rock” (with a higher BC) downrange.

I’ve been running the standard .120” freebore though and it’s been kind of a PITA since I’d prefer to run a longer jump. I can’t wait to try a longer .190” freebore like some of y’all have been running… though, I ran a few hundred rounds with the bullets fairly deep into the cases (bearing surface below the neck/shoulder junction) and it shot great even though that’s supposedly “against the rules “ lol, so who knows…
 
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#1,587
4O6shootist said:
So I've shot the 115 dtac out a few 169fb 6gt. One 26" the other pair at 28". Have a couple buddies running 26" too. The 26" barrels have all done really well around 2820-2840, my two 28" barrels have liked 2850-2870 range. Both achieved with 35.2-35.4gr H4350. Running 25-30k jump, anything deeper than 40k jump is going below the neck with bearing surface. I think I need to order a 190-200 freebore reamer.
Click to expand...
From what we’ve seen and tested so far I think a freebore of .185-.190 is going to be the perfect spot for the 115 DTACS. I tried a freebore of .215 but couldn’t get the velocities I wanted and the ES and SD’s were not that good. I think it was just too much freebore to get a good pressure curve.
 
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#1,588
drglock said:
From what we’ve seen and tested so far I think a freebore of .185-.190 is going to be the perfect spot for the 115 DTACS. I tried a freebore of .215 but couldn’t get the velocities I wanted and the ES and SD’s were not that good. I think it was just too much freebore to get a good pressure curve.
Click to expand...
Don't you think after 1k rounds you'll have eroded away to around 210+ freebore anyways? With your theory, at that point it's going to start shooting poorly due to the pressure curve changing? If you need more more psi curve without adding more velocity, go up an extra few thou neck tension, and add 0.1-0.2gr more powder and it should keep velocity same.

My second gt barrel had 80k of erosion from 200-2300 rounds when pulled, Bart ModBB steel, and I did nothing throughout it's life but add a lil more powder to always try keeping it at 2910-2930fps it shot well till the end.
 
#1,589
4O6shootist said:
Don't you think after 1k rounds you'll have eroded away to around 210+ freebore anyways? With your theory, at that point it's going to start shooting poorly due to the pressure curve changing? If you need more more psi curve without adding more velocity, go up an extra few thou neck tension, and add 0.1-0.2gr more powder and it should keep velocity same.

My second gt barrel had 80k of erosion from 200-2300 rounds when pulled, Bart ModBB steel, and I did nothing throughout it's life but add a lil more powder to always try keeping it at 2910-2930fps it shot well till the end.
Click to expand...
We’ll find out later on this year. But starting out at .215 would have been to much especially after erosion. I know on my first barrel running 109 ELDM’s, once I had my seating depth I never changed it over the life of the barrel. Charge weight yes but not depth.
 
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#1,590
An observation on freebore and these heavies - in load development for my 6 GT I tried the 112 MB and 115 RDF, and noticed the 115 RDF requires a LOT more freebore than the 112 MB because of ogive geometry. The 112 MB has a much longer nose and shorter bearing surface, so I ended up with a lot longer OAL when loading out towards the lands with it.

I haven't tried the 115 DTAC yet, but going by pictures and some math with posted CBTO numbers vs throat length, it looks like it's more similar to the 115 RDF in that regard. Has anyone here compared the DTAC and RDF side by side, maybe taken some OAL and BTO measurements?
 
#1,595
Just started load development with my 6GT. I wanted to narrow things down while I'm toying with virgin brass, and then finalize after my first firing.

27" Krieger, 1:8.

107gr SMK
Fed GM205MAR
Virgin Alpha
Varget
.030 off (1.945 CBTO)

Surprisingly, I was getting a wide ES (about 25-30) from 33.0 - 33.6gr. Once I filled the case up a bit more it came down. 33.6 - 33.8 knocked that in half with single digit SDs.

33.0 - 2,860 FPS
33.2 - 2,876 FPS
33.4 - 2,888 FPS
33.6 - 2,906 FPS (best accuracy, but need to tweak seating depth)
33.8 - 2,924 FPS
> 33.7 - Just shot to see what would happen if I cut 33.6 and 33.8 - is a winner, but need to tweak the depth a touch. This and 33.6 put (4) shots into the .2s, but kicked one out a half inch.

*******

I will probably see how H4350 does next.
 
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#1,597
I called Proof this morning to ask what their FB is on their pre-fits. The guy told me .119" FB. Has this been a problem for anyone shooting 109/110 gr bullets? That seems really short. If its not an issue, I may give the Gay Tiger a try. Id like to go back to regular AI mags with no spacer kits.
 
#1,598
Trevor300wsm said:
I called Proof this morning to ask what their FB is on their pre-fits. The guy told me .119" FB. Has this been a problem for anyone shooting 109/110 gr bullets? That seems really short. If its not an issue, I may give the Gay Tiger a try. Id like to go back to regular AI mags with no spacer kits.
Click to expand...
I haven’t seen any issues with the .120” freebore in my Proof with any of the bullets I’ve tried (108, 109, and 115). I found a nice accuracy node jumping bullets at .040” with the 115 DTACs.
 
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#1,599
Trevor300wsm said:
I called Proof this morning to ask what their FB is on their pre-fits. The guy told me .119" FB. Has this been a problem for anyone shooting 109/110 gr bullets? That seems really short. If its not an issue, I may give the Gay Tiger a try. Id like to go back to regular AI mags with no spacer kits.
Click to expand...

It is kind of short, I have to seat 112MBs .010" off or closer to keep that bullet's bearing surface above the neck/shoulder junction of Alpha Gay Tiger headstamp brass... but @ECK is right, it's not an issue. IME it hammers from 10 thou off to jumping 50 thou off (with the bullet set deeper in the case).

That said, I've been thinking of buying a hand-throating reamer to take the freebore out to ~.170" like the Alpha reamers', or even further... ideally I'd like to be able to shoot 109s/112MBs/115DTACs jumping 100 off, while still obeying the reloading "rules" that say no bearing surface below the junction... I'm not sure it'll matter, but I'd like to see what I get?

But... TBH, I've shot a shitload of rounds in both 6CM and 6GT with the bullet's bearing surface below the junction before I "knew any better"...15+ firings on the same brass in 6CM with no sign of any dreaded donuts... so who knows... some reloading lore is just BS that just keeps getting handed down by guys who've probably never burned out a single barrel, like "nodes" and shit, so it probably doesn't even matter lol...
 
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#1,600
diggler1833 said:
Just started load development with my 6GT. I wanted to narrow things down while I'm toying with virgin brass, and then finalize after my first firing.

27" Krieger, 1:8.

107gr SMK
Fed GM205MAR
Virgin Alpha
Varget
.030 off (1.945 CBTO)

Surprisingly, I was getting a wide ES (about 25-30) from 33.0 - 33.6gr. Once I filled the case up a bit more it came down. 33.6 - 33.8 knocked that in half with single digit SDs.

33.0 - 2,860 FPS
33.2 - 2,876 FPS
33.4 - 2,888 FPS
33.6 - 2,906 FPS (best accuracy, but need to tweak seating depth)
33.8 - 2,924 FPS
> 33.7 - Just shot to see what would happen if I cut 33.6 and 33.8 - is a winner, but need to tweak the depth a touch. This and 33.6 put (4) shots into the .2s, but kicked one out a half inch.

*******

I will probably see how H4350 does next.
Click to expand...
i have tested varget to 34.3 with 108s, settled at 34.
 
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