Short Barrel GT? 6 or 22?

[usmc45]

Looking at doing a 16" bolt gun and want to run a GT. Question is, 6 or 22. Would be running the 85.5-88 or the 105-109 weights. Anyone run a 16" barrel for either of these? Already running a 22gt in a 24" barrel and love it but would have no issue running the 6 as well. Just wondering if one would do better then the other in a 16" barrel. Just for ringing steel and punching paper. Fun gun/truck gun kind of thing. Thanks for any info you guys have.

Happy shooting.

 

[Hondo64d]

I run a 20” Bartlein barrel on my .22GT. About 3080 with 88s. Are you going to use a suppressor on it? If I wasn’t going to run a suppressor, I wouldn’t give up the fps by going shorter.

John

 

[Travis224]

I have 3 22GT barrels and I run 60 grain vmaxes
16" - 3450fps
18" - 3550fps
20" - 3600fps

This is not changing my powder charge at all, I do know that I can reduce my charge till I see a velocity change insuring full burn, I just haven't yet.

 

[xphunter]

Just under 16" 22 GT (Alpha Brass) 88 grain ELDM - 2940 fps
18" 22 GT (Hornady 6 GT brass necked down to 22) 88 grain ELDM - 3073 fps
Both using Reloader 26.
The rear grip used a Fed match primer, while the center-grip uses a CCI match primer.

 

[usmc45]

All those numbers are screaming. Most likely would run a can. I wasnt planning on pushing anything that hard and was thinking the 6 might be better in the wind at the slower speed but looking at all these numbers it might not matter with the heavy 88's or 85's.

 

[CaptArab]

88 eldm is a .545 G1.

That's better than (or at least equal to) many 105 class bullets, plus you get the big velocity boost. 22 cal is the way to go, IMO

 

[xphunter]

88 eldm is a .545 G1.

That's better than (or at least equal to) many 105 class bullets, plus you get the big velocity boost. 22 cal is the way to go, IMO

Yep!

 

[usmc45]

Sounds like this is the way to go.

 

[4O6shootist]

Man I was hoping to hear some data in here on shorter barrel 6gt builds. I have a 3b 7tw 6mm hawkhill coming I plan to run suppressed @ 20-22" with a 108 elite Berger or a 109 eldm, the 7tw will also stabilize the 90-100gr mono's out there. After hunting medium game last year with an 18" 22cm with 75 eldm, I'm a firm believer in smaller bullets with good shot placement, is as lethal a the 300-338 ubermags(have a few of them too). It's just far more pleasant shooting a suppressed 22 or 6mm over a braked 300rum burning 90gr of powder.

 

[xphunter]

Man I was hoping to hear some data in here on shorter barrel 6gt builds. I have a 3b 7tw 6mm hawkhill coming I plan to run suppressed @ 20-22" with a 108 elite Berger or a 109 eldm, the 7tw will also stabilize the 90-100gr mono's out there. After hunting medium game last year with an 18" 22cm with 75 eldm, I'm a firm believer in smaller bullets with good shot placement, is as lethal a the 300-338 ubermags(have a few of them too). It's just far more pleasant shooting a suppressed 22 or 6mm over a braked 300rum burning 90gr of powder.

I can probably get you some short barrel numbers. Tom Jacobs runs a 15" or 16" 6 GT in a specialty pistol, and I bet he or George has some numbers for 20-22". I will try to get some numbers with bullets from the 103 Vapor Trail to the 109 ELD-M's.

 

[usmc45]

Would be very interested to hear those 16” 6GT numbers.

 

[Tikka595II]

I have a long barreled (27.5") 6gt and my brother has a 18" 6 Gt we have crono'ed a few things unfortunately I didn't save the most recent data with light bullets but I can give some approximates for now. My normal load has been 35grs of re16 behind a 109 hybrid at an average of 3030 fps the one time we crono'ed it in the 18" gun it was around 2560. the load for his gun that same day was 35.5 grs of IMR 4451 with berger 105 bt and it also was about 2570. The most recent time we crono'd that I don't have the proper numbers for, was with some light bullets to see what speed was possible for varmit killing, we loaded 38 grs of h380 ( based on a test I did with my 22 gt more on that later) with some pulled bullets in 58gr 65gr and 75gr vmax when they were shot from the 18" gun the speeds where very inconsistent varying from 2650 to 2900+ across all of those weights up and down which I believe was caused by a combo of neck tension and wrong powder burn rate for that short of a barrel. we also ran 87 vmax at 38 grs of h380 and 104 bib custom bullets loaded with 36.6 grs of re16 that was left over from another test with increasingly better results in the ES department with both of them having an average in the 2840 range. my gun with the long barrel all of the h380 loads where within a relatively close es for the given bullet weight with the 87gr performing the best around 3000 fps ( these numbers are approximate per my memory). We where planning to go to the range this weekend and will take both 6gt's along with some matching loads and report back with some fresh numbers and hopefully proper powders as well.

 

[usmc45]

Sounds good. Looking forward to what you guys find. Would love to run the 105's at 2700 out of a 16" barrel but doesnt look like that possible.

 

[xphunter]

I have ran the 6mm Long Dasher from a 15", 6 Creed in a 15" and a 16", 6mm BR in a 15", and a 6 Dasher in a 17" with the 105-108's.
If you want numbers, let me know

 

[Rex_Allen]

I have ran the 6mm Long Dasher from a 15", 6 Creed in a 15" and a 16", 6mm BR in a 15", and a 6 Dasher in a 17" with the 105-108's.
If you want numbers, let me know

Post the numbers

 

[xphunter]

16" 6 Creed 105 A-Max 2780 fps
16" 6 Creed H-S barrel 103 ELD-X factory 2791 fps and 108 ELD-M factory is 2704
17" 6 Dasher 105 JLK 2700 fps
15" 6 BR with 105 A-Max 2380 fps
15" 6XC with 107 SMK 2731 fps
15" 6mm Long Dasher with 105 Hybrid 2800 fps
15" 6 Creed with 105 A-Max is 2746 fps
15" Nosler Independence with 108 Match ammo 2685 fps
18" 6 Creed with 103 Vapor Trail 2893 fps

 

[4O6shootist]

@xphunter whats a long dasher my man? Edit I just googled, a 6X47AI. That's a spicy lil guy I'm sure.

 

[xphunter]

@xphunter whats a long dasher my man? Edit I just googled, a 6X47AI. That's a spicy lil guy I'm sure.

It is a bit beyond a Ackley Improved, as it actually raises the shoulder.

 

[bodhisafa]

It is a bit beyond a Ackley Improved, as it actually raises the shoulder.

any more info available? Interested

 

[xphunter]

A friend shooting WY-SHOT with the field stock.

The “Batman” Pistol — Wicked XP-100 in 6-6.5×47 Lapua « Daily Bulletin

Click Photo to View Larger Image Here is Ernie Bishop's pride and joy, a specialty pistol nicknamed Batman because the black carbon-fiber stock looks like the Batmobile. This is one sophisticated handgun. Complete with scope, the Batman pistol weighs under 7.5 pounds, thanks to the ultra-light...

bulletin.accurateshooter.com

 

[Tikka595II]

Here is the info from the past weekend we loaded six 65gr Vmax to 1.861 BTO with 35 grs of varget in hornady brass with rem7.5 primers. this is actually below some of the book minimums but was not an issue for our purposes next was 87gr Vmax BTO of 1.911 the rest the same as above
100gr hornady soft point at 1.861 BTO with 35gr of N150 this is the first we have worked with n150 and we are looking forward to more testing.
105 Hornady bthp at 1.977 BTO with 35gr of n150
108 eldm at 1.962 BTO with 35 gr of RE16 this is a close match to the 109 hybrid load from before
and finally the original load for the 18" barrel berger 105 bt match at 1.986 BTO and 35.5grs of imr 4451
here is the results

65 Vmax
18"barrel 27"barrel
2961 3285
2960 3322
2934 3314
87 Vmax
2916 3182
2920 3202
2932 3200
100gr sp
2811 3039
2804 3051
2812 3056
105 bthp
2802 3033
2804 3029
2818 3030
108 Eld M
2574 2878
2580 2855
2557 2846
berger 105 bt
2571 2827
2593 2876


As you can see the speeds where very consistent I believe proving that h380 was to slow for the light bullets also you can see n150 produced significantly better speeds then we where expecting and we will be doing more tests with it. I don't currently have the powder charges we tested in the 22GT but our starting load was 3126 and the finishing load was 3441 and that still was barely showing any pressure in ocd brass. will up date as more info is available.

 

[4O6shootist]

Here is the info from the past weekend we loaded six 65gr Vmax to 1.861 BTO with 35 grs of varget in hornady brass with rem7.5 primers. this is actually below some of the book minimums but was not an issue for our purposes next was 87gr Vmax BTO of 1.911 the rest the same as above
100gr hornady soft point at 1.861 BTO with 35gr of N150 this is the first we have worked with n150 and we are looking forward to more testing.
105 Hornady bthp at 1.977 BTO with 35gr of n150
108 eldm at 1.962 BTO with 35 gr of RE16 this is a close match to the 109 hybrid load from before
and finally the original load for the 16" barrel berger 105 bt match at 1.986 BTO and 35.5grs of imr 4451
here is the results

65 Vmax
16"barrel 27"barrel
2961 3285
2960 3322
2934 3314
87 Vmax
2916 3182
2920 3202
2932 3200
100gr sp
2811 3039
2804 3051
2812 3056
105 bthp
2802 3033
2804 3029
2818 3030
108 Eld M
2574 2878
2580 2855
2557 2846
berger 105 bt
2571 2827
2593 2876


As you can see the speeds where very consistent I believe proving that h380 was to slow for the light bullets also you can see n150 produced significantly better speeds then we where expecting and we will be doing more tests with it. I don't currently have the powder charges we tested in the 22GT but our starting load was 3126 and the finishing load was 3441 and that still was barely showing any pressure in ocd brass. will up date as more info is available.

35gr N150 is a pretty spicy load. 34.1gr in a 26" barrel pushes 107smk 3000fps, the ejector cut from the TL3 bolt face is just starting to leave a shiny spot on case head, this is on 2nd firing, and a barrel with about 250 rounds on it. No bolt lift, very slight cratering of the cci450 primer, unfortunately that's a normal thing. A friend runs 30.2 gr N150 in his dasher with 105 Bergers. Perhaps you have a slow lot, or your running pretty high pressure.

 

[Travis224]

I have 3 22gt barrels, 16.5 Proof Research, 18, and 20" lengths from Bartlein. Running only 1 powder/powder charge of H4895 at 36grains and only 60grn VMax bullets, I have gotten speeds of : 3450, 3550, 3600fps. Great groups at or under 1/2", and those velocities were within 10fps spread at those averages in each barrel. 2 Bartlein carbon barrels, 1 Proof carbon. The Proof is the fastest twist (7.5) and the "worst" of the bunch. The Bartleins are 10&11 twist.

 

[usmc45]

Who did you have spin those barrels up for you? and thanks for the info, i'll be running some light stuff as well as the heaves in my 16.5" proof.

 

[4O6shootist]

My 20" Bartlein 7.5tw 6mm carbon blanks shipped. Will be cut with an alpha 170fb chamber and spun to a Zermatt Ti3 action. Hopefully have it in hand in 5 weeks time or so.

 

[Doctor Foxtail]

Just under 16" 22 GT (Alpha Brass) 88 grain ELDM - 2940 fps
18" 22 GT (Hornady 6 GT brass necked down to 22) 88 grain ELDM - 3073 fps
Both using Reloader 26.
The rear grip used a Fed match primer, while the center-grip uses a CCI match primer.

xphunter,

What is the make of that wrist cartridge holder?
Thanks

 

[xphunter]

Forearm Rifle Cartridge Holder

ABU Gear, Packs, 3-Day Assault Pack, Military Assault Bags, Tactical Slings, Pouches, Bags, Belts, Gun Cases, Holsters, Fire & Safety, Vests, Nylon Tarps, Gaiters, Poncho, Medic Pouches, M9 Backpack, fireforceusa.com is the the place on the web for all your Miliatry Bag Products. Updated on...

fireforceusa.com

 

[Doctor Foxtail]

Forearm Rifle Cartridge Holder

ABU Gear, Packs, 3-Day Assault Pack, Military Assault Bags, Tactical Slings, Pouches, Bags, Belts, Gun Cases, Holsters, Fire & Safety, Vests, Nylon Tarps, Gaiters, Poncho, Medic Pouches, M9 Backpack, fireforceusa.com is the the place on the web for all your Miliatry Bag Products. Updated on...

fireforceusa.com

Thanks