That was a thing i'm taking into consideration. I've been shooting 6gt for almost 6 months now and don't have a steady stream of projectiles. I go from 115DTACs to 109 Bergers to Hornady 105BTHPs. I'd like to get more consistency within weights hence there is always a stock of 22 projectiles that i've noticed and cheap and that.
22GT load data
- Thread starter Krob95
- Start date
115 dtac have been in stock for a few years now from TUBB. The bullet has had legit 313 g7 from my 7.5tw barrels to 1400y. They're 38¢ a piece, same as the 22cal 85.5 berger.
I have 2x 22gt, multiple 6gt, and a 25gt being cut atm. If you're going to run the rifle in competition, yes the velocity combined with a 90atip which has a 306g7(my 7tw barrel) at 3090fps is a ballistic hero. Unfortunately that speed makes it harder for me to tell where I hit on plate. It's a great cartridge, but in match scenario I think there are better choices.
I haven't gotten to play with the 25, but from what I'm reading 2800fps is top end with 135s from a 28" barrel. I'm really liking the low/slow lately with my 65cm using 154s at 2620fps. The 135 at 2750 holds same wind as the heavier 65cm with 2gr less powder and 20gr lighter bullet, should be less recoil. I know my 6gt with 115s at 2850 is def less than the 65cm load.
So in your experience the 6GT was easier to spot impacts than the 22GT? I’m still very new to this precision game but have no troubles spotting my impacts (most times)
I see an impact, or a miss 95% the time unless it's a horrible position or heavy veg soaks up a miss. But I've found the slower the bullet, better chance my eyes/brain can see the first reaction the plate rocks L or R if off center impact. The 22 gets there so quickly, I was often catching the 2nd plate movement which is the wrong direction for making a correction, and more often than not, 0.2 mil adjustment would take me off the edge of plate. So I quit trying to make a correction to center with the 22gt. Throat erosion with the 22 is def faster rate than the 6. A guy could always back down the 22 velocity, but in thay case, it starts becoming a more neutral ballistic situation in the wind. Don't fret over drop, as that's the known variable, wind deflection advantage is where ballistics matter. However once you get used to a cartridge/bullet combo and get intimately familiar, it really doesn't matter.
Conditions from last match: 2600da 7mph @ 9 o'clock, ,no spin drift, wind deflection at 700y
22gt with 90atip at 3080 0.7mil
6gt 115dtac at 2860 0.8mil
25gt 135lrht at 2770 0.7mil
65cm 153.4 at 2620 0.7mil
Can I shoot that 0.1 mil difference of the 6gt off a prop VS the other cases? Likely not!
Last edited:
Great insight here! Didn’t know that the 22GT had a faster throat erosion than the 6GT. Definitely taking that into consideration as well.
Bore to case capacity ratio. Basically the same case volume, less volume in a 22 bore than a 243 bore. Over bore cartridges are harder on barrels.
I don’t shoot matches but I would think recoil has more to do with it than bullet speed. If I back my loads off a little the recoil impulse is significantly different. I shoot very light hunting rigs though. I don’t think anyone can see the difference in speed to target. Unless you’re shooting a BB gun! Haha
The average human eye sees between 30-60 frames per second. A cartridge at 3000fps VS 2600fps at 600y is near 0.1 seconds difference in flight, that's 3-6 more frames of data to see for the brain to compute. I know the flight time variation sound so small that it's no difference however that's enough time to see more. Consistency of recoil management and knowing where the target lands in the reticle in the recoil impulse and training the eye to look there, will give the most improvement in this aspect. I still feel the slower bullet gives a better chance of seeing more data.
New to 22GT, I have a 6GT RCBS Matchmaster FL size / Bullet seater die with the capability of using bushings.
My question to get set up is, Is all I need is a .249 Bushing and a .222 mandrel?
I will be using old Alpha 6GT brass.
My question to get set up is, Is all I need is a .249 Bushing and a .222 mandrel?
I will be using old Alpha 6GT brass.
I found the loaded od to be 0.253, and I run a 250 whidden bushing, no mandrel.
The 90smk was super easy in my 22br, jumping 20k at 2900 and 2980 it shoot sub half minute with just a lil powder tweaking.
28" pipe. My 22" 22gt will run them up to 3050 before pressure. The heavies should be used with the 170fb 22gt chamber in my opinion.
Very new to 22GT but managed to squeak this group out a couple days ago. Loaded up 5 each in .5gr increments from 33-35gr. H4350 cci450 and 88eld loaded in virgin necked down GAP 6gt brass. After fireforming I will explore that load a little more. Pictured group was shot with 35gr, didn’t chrono any of the ladder loads. But the fireforming load of 34.5gr is averaging 2925fps out of the 20” suppressed barrel. Also plan to try 4831sc
Last edited:
I’m struggling to get a barrel.
Really want to shoot this GT this summer.
Without going through all 12 pages, what am I needing in a new barrel?
Here’s the info I have so far.
24” 1:7.5 twist
.169 freebore
I know I’ve seen something about .118 vs .119, but I don’t know if that is the internal barrel diameter or what exactly.
Any more information from someone smarter than me, and maybe a barrel maker where I can get this done?
Thanks in advance guys.
Really want to shoot this GT this summer.
Without going through all 12 pages, what am I needing in a new barrel?
Here’s the info I have so far.
24” 1:7.5 twist
.169 freebore
I know I’ve seen something about .118 vs .119, but I don’t know if that is the internal barrel diameter or what exactly.
Any more information from someone smarter than me, and maybe a barrel maker where I can get this done?
Thanks in advance guys.
ACE barrels out of Spokane WA gets blanks out pretty quickly. I've saw groups from a few their 22 cal blanks, on a gt other a creed that were very good. They were 219 bore 6 groove barrels. They can do any twist you want within reason.
I know, old post. But do you know how this powder behaved for your buddy with temperature changes?
And what kinda barell life are you guys seeing with the 22GT?
Glad to read this. I bought 8 lbs on a whim but haven’t seen much load data for it with 22GT.
New to the caliber, throwing in what I’ve worked up for my first load
88 ELDM
Alpha 22 GT brass
450 CCI
34.14 gr H4350
Gives me 3063 FPS with an SD of 2.9
88 ELDM
Alpha 22 GT brass
450 CCI
34.14 gr H4350
Gives me 3063 FPS with an SD of 2.9
Dang that's a fast barrel or a very fast lot of H4350, I needed 36gr to get up to 3080.
I think it’s both. But I live in a desert climate and dehydrate my powders and usually that it speeds things up quite a bit.
I'm running 80 eldm at 3180 in a 22" with 33.2gr N150. The 88s and 90 atips have s mile of bearing surface compared to the 80s and 85.5 that I've tested. 22gt is a great lil case! So little recoil and great ballistics.
Last edited:
26" 1:7.5 twist ordered from Crownridgebarrelworks Anthony has sendero barrels in stock so i ran with it. I have alot of Shooters World Long Rlifle. And plan on using my 80gr and 88gr seconds first and then running 90gr smk or 85.5. How is Shooters World doing in the 22 GT?
Cool does it work with all bullets and i jabe seen a few using H4831SC
His turn around time is amazing. So is his barrel work.
Just posting my findings with our new 22gt build.
I’m running a 20” proof .118” bore 1:7 twist barrel on my KDE Customs m7 build. I chambered the barrel with a over sized reamer, by .002” in body diameter with a .169” fb. I increased head space by .007” to increase body length and shorten neck.
I’m working on load development using alpha brass, berger 85.5s, gm205m, and IMR 4831.
Built my own bushing in the seater die and bushings and expanded in the sizing die, running .003” neck tension.
I started with 33g and worked up to 40g.
First 33g-38g were .010 jump to lands, one round each. First rounds through the barrel.
80*f day
33g. 2640
34g. 2757
35g. 2847
36g. 2909
37g. 2971
38g. 3070
Below are .020 jump to lands, two rounds each.
85-90*f day
38g. 3066,3037
39g. 3143,3137
40g 3200,3204
Took 39g and loading three rounds each at different jump distances. Will shoot them in a ladder test sequence.
.020
.030
.040
.050
Hope to shoot this string in the morning. Will post results once finished.
I’m running a 20” proof .118” bore 1:7 twist barrel on my KDE Customs m7 build. I chambered the barrel with a over sized reamer, by .002” in body diameter with a .169” fb. I increased head space by .007” to increase body length and shorten neck.
I’m working on load development using alpha brass, berger 85.5s, gm205m, and IMR 4831.
Built my own bushing in the seater die and bushings and expanded in the sizing die, running .003” neck tension.
I started with 33g and worked up to 40g.
First 33g-38g were .010 jump to lands, one round each. First rounds through the barrel.
80*f day
33g. 2640
34g. 2757
35g. 2847
36g. 2909
37g. 2971
38g. 3070
Below are .020 jump to lands, two rounds each.
85-90*f day
38g. 3066,3037
39g. 3143,3137
40g 3200,3204
Took 39g and loading three rounds each at different jump distances. Will shoot them in a ladder test sequence.
.020
.030
.040
.050
Hope to shoot this string in the morning. Will post results once finished.
76*f this morning, felt a little unstable, hadn’t had enough coffee before shooting. .020” was definitely the best but .050” may be decent too if the flyer was me.
I didn’t put the magneto speed on barrel while checking bullet jump.
My velocity with a .020” jump was 3140 fps.
I’m loading some virgin brass up today at .015” jump and I’ll get a velocity on them and post it.
The Garmin kicks ass. Hopefully you have a chance to give up a try.
Thanks. That was just the right amount of coffee. Now I have to do it again lol.
I have noticed my groups leave a lot to be desired with any charge below about 35gr of h4350. 35 and 35.6 have produced a couple .5” 5 shots groups. It would appear most using h4350 are using ~35-37ish grains which is 1.5gr+ above the published Hodgdon data. I know lots are not seeing any pressure signs but what’s the deal with most having to shoot that much over book max?
I will say my barrel (suppressed 20” 7.5tw .219 bore) seems to be a little on the faster side given that it’s giving me about 3000fps with 34.6gr of h4350 with 88 eld’s and cci450s. Just recently got some alpha brass I’m playing with, most my info is coming from hornady brass up to this point.
Again I’m very new to this little round and so far have really liked it but it’s just got me curious.
I will say my barrel (suppressed 20” 7.5tw .219 bore) seems to be a little on the faster side given that it’s giving me about 3000fps with 34.6gr of h4350 with 88 eld’s and cci450s. Just recently got some alpha brass I’m playing with, most my info is coming from hornady brass up to this point.
Again I’m very new to this little round and so far have really liked it but it’s just got me curious.
Work up slow and look for pressure signs to tell you when. I’ve never stopped where manuals tell me to and have lived to tell the tale.
Got to shoot a few rounds today with a Garmin by my side. Not mine, but definitely getting one asap.
With virgin brass 5 shots averaging 3150 fps.
With a 320 yd zero.
At 200yds hold is 2moa down, 500yds hold is 4moa up.
Shot one round at 500 corrected for wind and shot two more. Those two were under .5moa. Went to 200 and shot two, they cut each other in a .092moa.
Hoping to get out this weekend and shoot 3 shot group at 200yd, 500yd, 800yd, and 1000yds.
So far it’s looking promising.
Ps now 38 rds down the barrel.
Last edited:
