Anyone chrono a T3x in 6.6 Crd using Hornady 143 ELD-x

Hi all
Bit of long shot (pun intended) but has anyone got some velocity figures on your bog standard T3x in 6.5 creedmoor using the Hornady 143gr Eldx factory ammo?
I’m trying to stretch its legs a little and step away from being a rather unsuccessful bush basher and go for more open country and just wanted to work out all that trajectory stuff, I know the pack comes with some drop info but test gun barrel is longer than the factory barrel on my Tikka (I forget both figures atm) so thought some accurate velocities would be better than a rule of thumb of every inch shorter = X fps loss type stuff.
Thanks in advance
FP

It would probably be best to chrono it out of your rifle

Sorry I should have said I don’t have a chronograph or belong to a club etc so was hoping for some approximate figures from someone else’s

This should give you something to work with. Tested on Labradar

16" = 2375
18" = 2455
24" = 2590

Above speeds are an average across 3 shot groups with factory precision hunter ammo in 3 different tikka t3 creedmoors ive dealt with, all with factory barrels (shortend in the case of the 16" & 18"). Definately on the slow side compared to what the velocity on the packet suggests.

Assuming you have a 22" barrel, somewhere around 2550 will be a good starting point.

2530 out of a 20" barrel T3x

2550 out of my boys 20'' barrel T3x. Our hand loads are doing 2730 with the 143's.

Many thanks folks, exactly what I was after Cheers

I saw the title for the thread, and thought to myself even the 6.5 crud guys themselves are trying to upsize their choices now haha

If you don't have a chrono, you can confirm by measuring out an actual real 500 meters of range somewhere (if you have a formed range that goes past 300 that's ideal as the distances should be laid out) and then checking you rifle is on at 100m shoot at 500m. There will be a lot of drop, and you want a decent stable aiming point with enough paper under the aiming point to record the point of impact. The drop amount when entered into a ballistic app with the rest of the bullet info should be able to back calculate what the muzzle velocity is within reason. You need a top notch day weather wise for this though, calm and still and a nice stable shooting position with accurate info. Otherwise you need to expend a LOT (10+) rounds to get a decent average, plus a fouler and warming shots and then ensuring your barrel temp doesn't get to high so everything is as close to the same conditions each time. This is pretty much the old fashioned way of doing things before chrono's - there are formula about to work out speed of the projectile from distance and drop so you don't even need the app.

But - I'd ask about and get hold of a chrony as it is so much easier it's worth the hassle of tracking one down. Also, once you go down this track there will be changes you have to make like not being able to get a component or changing powder batches, or even checking velocity as a factor of barrel wear so it's worthwhile getting access to the right kit to do it.

my 18" is doing 2530

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Originally Posted by Huntn

2550 out of my boys 20'' barrel T3x. Our hand loads are doing 2730 with the 143's.

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What powder are you using?

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Originally Posted by 6.5 CRD

What powder are you using?

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RL26

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Originally Posted by 6.5 CRD

What powder are you using?

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Same here RL 26 and 143 ELDX 2810fps from 20"

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Originally Posted by 25/08 IMP

Same here RL 26 and 143 ELDX 2810fps from 20"

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Yeah my 24” does just shy of 2900 with RL26. Was just hoping for a reply that was something other than unobtanium haha


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Originally Posted by 6.5 CRD

Yeah my 24” does just shy of 2900 with RL26. Was just hoping for a reply that was something other than unobtanium haha


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Superformance does it

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Originally Posted by Kelton

Superformance does it

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Yip 1 grn less of that stuff gets same speed and almost half the price

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@25/06 IMP i think people are scared of that powder its brilliant beat metering powder iv have used threw my auto thrower

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Originally Posted by Kelton

@25/06 IMP i think people are scared of that powder its brilliant beat metering powder iv have used threw my auto thrower

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It sure is and very useful in a number of cal.
.243,.260, Creedmoor,.270 and 300wsm are just the ones I use it in.

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Originally Posted by 6.5 CRD

This should give you something to work with. Tested on Labradar

16" = 2375
18" = 2455
24" = 2590

Above speeds are an average across 3 shot groups with factory precision hunter ammo in 3 different tikka t3 creedmoors ive dealt with, all with factory barrels (shortend in the case of the 16" & 18"). Definately on the slow side compared to what the velocity on the packet suggests.

Assuming you have a 22" barrel, somewhere around 2550 will be a good starting point.

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Man the tikka barrels are slow.

I get 2540 out of my 16 inch kimber with factory 143s. Chrono and drop confirmed

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Originally Posted by Nick-D

Man the tikka barrels are slow.

I get 2540 out of my 16 inch kimber with factory 143s. Chrono and drop confirmed

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Yep they are slower but some of it is likely inconsistent factory ammo though. I chronod almost a whole packet of 143eldx in the 24" the other day while my wife was shooting it. Slowest was 2581 fastest was 2672. ES of 91 :wtfsmilie:

So the 2375 i got from the 16" a while back could well have been some "slow" factory rounds. I used to have a browning 6.5 prc, sold that and replaced it with a tikka 6.5 prc. Next to no difference in speed between them with the same load, the browning was 2" longer (26") so was always going to be faster but they were within 50fps with the same load.

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Originally Posted by 6.5 CRD

Yep they are slower but some of it is likely inconsistent factory ammo though. I chronod almost a whole packet of 143eldx in the 24" the other day while my wife was shooting it. Slowest was 2581 fastest was 2672. ES of 91 :wtfsmilie:

So the 2375 i got from the 16" a while back could well have been some "slow" factory rounds. I used to have a browning 6.5 prc, sold that and replaced it with a tikka 6.5 prc. Next to no difference in speed between them with the same load, the browning was 2" longer (26") so was always going to be faster but they were within 50fps with the same load.

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Greetings @6.5 CRD,
The differences between the three barrel lengths is about what I would expect or a loss of around 20 to 25 fps per inch down to 18 to 20 inches and rather more below that. All are lower than you would hope for, even with factory ammo. You leave a lot of performance on the table with a 16 inch barrel. It seems the only way you get consistent ammo is handloading or sticking to the more expensive stuff.
Regards Grandpamac.

Out a 20inch CTR suppressed
2595-2600fps
Hornady Brass LP
41.6gn H4350
140 eldm
0.09” jump

Factory Hornady 140 eldm match 2550fps

It is slow but really accurate. I read the slower speed could be due to the Tikka barrel having deep throat which I don’t really understand… I touch the land at 2.905” oal. Anyone tried to reduce the jump to see if speed improved?

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Originally Posted by 6.5 CRD

Yep they are slower but some of it is likely inconsistent factory ammo though. I chronod almost a whole packet of 143eldx in the 24" the other day while my wife was shooting it. Slowest was 2581 fastest was 2672. ES of 91 :wtfsmilie:

So the 2375 i got from the 16" a while back could well have been some "slow" factory rounds. I used to have a browning 6.5 prc, sold that and replaced it with a tikka 6.5 prc. Next to no difference in speed between them with the same load, the browning was 2" longer (26") so was always going to be faster but they were within 50fps with the same load.

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Yeah mine are an older batch as I bought a few, so maybe they have been down loaded a little? Will shoot through them then will be replaced by a 130 eldm handload. Factory stuff is silly expensive at the moment.

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Originally Posted by flyingpillock

Sorry I should have said I don’t have a chronograph or belong to a club etc so was hoping for some approximate figures from someone else’s

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If you're nelson based, head to Peak View Range over in the Whangamoas (https://www.peakviewrange.com/) Carl will be able to show you how to work out exactly how fast you are shooting without a chrono, and to a higher degree of accuracy than most chronographs read. You don't have to be a range member, visitors can still book - It just costs more in the long run if you head there more than 3 or 4 times. As a one off to get your head round it though its well worth the cost. There are LOTS of targets of various sizes out to 1k, ideal place to learn some long range shooting and work out exactly what your rifle (and ammo) is capable of.

Cheers all for your helpful replies. Actually stumbled upon the post for the loaner Sth Island Chronograph and have put my hand up for a crack, what a great scheme.
Looking forward to seeing how my Tikka measures up!
FP