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6GT project/range report

Anyone try the Berger 108 BTs in their GT?

I've had good luck with the 110 A-Tips (shot a 200-15x with them today), but I kinda feel like the gun was pseudo out of tune at times.

I want to try the 108 as the only distance I plan to shoot this rifle in competition is at 500, and there are guys doing well with the Dasher/105 combo; I figure I can run the 108s out of a GT a little harder and have a slight edge...only with a hyper forgiving bullet.

Also, answering my own question here, but N150 worked well in my GT (not as good as H4350); it delivered some very low SDs with the 110 Atips.
 
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Curious....so has the GT really accomplished anything that other cartridges on the market wouldn't already do. Accuracy does not really seen to be anything to write home about. Possibly better feeding is all I really see so far. But a 6x47L would already do this. Just curious is all.

Paul
 
boltfluter said:
Curious....so has the GT really accomplished anything that other cartridges on the market wouldn't already do. Accuracy does not really seen to be anything to write home about. Possibly better feeding is all I really see so far. But a 6x47L would already do this. Just curious is all.

Paul
Click to expand...
The big thing for me in going with the 6mm GT was that I did not want to fireform, and now 6 dasher, and 6x47 is available (happened about the same time I started my build). I wanted better barrel life than the 6mm CM and the 6x47.

I also enjoy things with room for discovery, and staying just outside of the mainstream.

Basically I have accomplished 6 Dasher accuracy with lower pressure (QL Estimate) at the same velocity. My barrel life is still pending. I cant comment on mag feeding because my rifles are single shot, but I have a 3rd in the works.

I am not disappointed with my choice. Be adventurous, it makes for a great story at the range...

~Cam
 
thedrifter said:
The big thing for me in going with the 6mm GT was that I did not want to fireform, and now 6 dasher, and 6x47 is available (happened about the same time I started my build). I wanted better barrel life than the 6mm CM and the 6x47.

I also enjoy things with room for discovery, and staying just outside of the mainstream.

Basically I have accomplished 6 Dasher accuracy with lower pressure (QL Estimate) at the same velocity. My barrel life is still pending. I cant comment on mag feeding because my rifles are single shot, but I have a 3rd in the works.

I am not disappointed with my choice. Be adventurous, it makes for a great story at the range...

~Cam
Click to expand...

I'd agree very much with this.

Mine took a little tuning, and I ran into a bunch of non-6GT specific technical issues along the way, but now that they're sorted, both of mine are lasers. One is running 105 Hybrids at 3100, and the other is running 108 BTs at 3050FPS.

Both were built as 'just screwing around' guns, so they're not setup to really compete against the other 6mms in F-Open, but in a properly configured stock/rest/weight (or if somebody had a panda setup in an F-Open config), I'd be willing to bet they'd run right with the BRAs, BRXs, Dashers, etc. I see at mid-range.

I don't think it was as easy to tune them as a dasher might be.

Regarding feeding, only one of mine is built on a repeater, and it does cycle with 100% reliability using AICS mags. The overwhelming majority of the time I'm single feeding them though.

The only critiques I have of the GT are pretty minor; I'm not a huge fan of either brass offering currently available.

Secondly, I think it's got a hair bit more powder capacity than is optimal for Varget. I really think it shines with H4350 rate powders, but it's marketed as being built around Varget.

Lastly, the reloading practices of the crowd that shoot this round are a little 'head scratching', which makes you question a decent bit of the info you see posted. (i.e. some of the stuff I see on the 6GT FB group is pretty wild, lol. Several jumping powder charge nodes in .5gr increments, lots of folks just blindly running 34.5gr of varget cause the FB page says it would work etc.).

I suspect the Dasher is probably a little easier to jump into, just because of its more mature BR/F-Class following. It's kinda like with .308 or .284 load info here; it's all well defined, and very established. Not so much for the GT.

I'm not claiming it's better than anything; I think it's basically just a dasher that feeds without a bunch of drama.
 
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Of course, this is just my opinion, but I think the GT is everything the Dasher should be. I shoot PRS type matches, mainly and can't speak about bench rest or F class.
Feeding from a mag w/o a spacer, lower pressure, and a heavier bullet were the reasons I went to it.
I'll certainly agree with @MikeMcCasland about using Varget, as I hit pressure around 34 gr.
It's working well with RL16 and N555 and 105 hybrids and 115 Dtacs.
 
@MikeMcCasland @kindabitey,

I agree with both of you, I never tried Varget but looking over the numbers it just seemed HOT. I did jump right in with Reloder 17 and works amazing for me (34.6g). 107 SMK at 2930fps.

Reloder 15 worked too, but primers started to disappear...

I understand that a-lot the PRS shooters using the 6GT & other cartridges also load on a progressive press, nothing wrong with that but different shooting styles have different goals. For me shooting Midrange 600 to NRA 1k matches its going to be slow and exact, also I do not have a the right baseplate for my progressive press either.
 
@boltfluter

I wanted a plug and play mild 6mm with enough barrel life for a whole season (1500-2000 rounds for me) that I don't have to fireform brass, functions in my R700 clone repeater, and the reamer-brass-dies specs were all on the same page as stock items. And, Hornady picked up brass production, so I'm sure there will be plenty of brass in the future.

6GT has delivered on that, and I'm invested in the cartridge for the next few seasons.
 
thedrifter said:
I understand that a-lot the PRS shooters using the 6GT & other cartridges also load on a progressive press, nothing wrong with that but different shooting styles have different goals. For me shooting Midrange 600 to NRA 1k matches its going to be slow and exact, also I do not have a the right baseplate for my progressive press either.
Click to expand...

The ammo might be loaded on a progressive, but lots of them are using powder measures like a Prometheus or a FX-120i.
 
Hoser said:
The ammo might be loaded on a progressive, but lots of them are using powder measures like a Prometheus or a FX-120i.
Click to expand...

I have been thinking about this very same thing. Not setup for it yet, but it reduces the purpose of having a progressive press. Rather, does not take full advantage of a progressive press's capability.

This might explain why there has been a push in the turret style of press. I like what I've read about the Zero Press. Not a purchase I see myself going with anytime soon.
 
thedrifter said:
I have been thinking about this very same thing. Not setup for it yet, but it reduces the purpose of having a progressive press. Rather, does not take full advantage of a progressive press's capability.

This might explain why there has been a push in the turret style of press. I like what I've read about the Zero Press. Not a purchase I see myself going with anytime soon.
Click to expand...

Every time I pull the handle, a loaded round comes out the other side.

When a case pops out the top of the toolhead, I pour powder in the case and keep going. The only thing I am waiting on is my powder measure, and that isnt more than a couple seconds.

Below is 338 Lapua being loaded for an ELR match at NRA Whittington.

lu1cB9y.jpg
 
I use a Dillon 650 and three Chargemasters. Ive tapped the top tool head for two screws to put pressure on it to alleviate any slop, and done the same with needle bearings on the base plate. My shoulder bump and seating depths are very consistent.

I can load 100 rounds in a little over 30 minutes.
 
Anyone try aics patter Pmags for 6GT? My 5rnd AI branded mags work perfectly, but my 10 rnd Accurate Mag won't feed. The back of the round keeps tipping down into the mag and the bolt face won't pick it up. I really don't want to modify the accurate mag if un needed because it feeds other calibers well.
 
Frychief asked about lighter bullet weights and I am interested in that also. I have four 6X47L and really like that cartridge a lot. I shoot steel in informal matches with local friends out to around 600 yds. I would also use it for predators so the bullets in the 80 to 90 Gr weight would have a place in the 6GT for me. Anyone ????
 
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I purchased 5 and 10 round AICS pmags, they both work good, and actuallyseem to feed better than my 5rnd AI branded mag. I will run them for next few hundred rounds and positional shooting. Also tried a 10rnd Alpha mag, it feeds well too, but feed lips were a bit tall for my action and caused bolt drag.
 
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