anyone shooting the 22x6,8??

coyotesmoke

coyotesmoke

New member
I am thinking about building one of these and would like to know how you like the round, velocities you are getting and what dies you are using.

Thanks.
 
I've been shooting one for sometime now. Unfortunately I am not near my notes. Ritch has one too so maybe he can chime in.

I know that 50's at 3700 are easy and 69's at 3300+ do well. Impact on PD'S is a sight to behold. Never have I seen that kind of devastation with a 22.

Redding Type S F/L bushing dies do the trick. Brass forming is quite easy and I have found case life to be quite long. I have some 6X6.8 with over a dozen loadings.

Using ASC magazines you can load as long as you like. They are inexpensive at less than $20.00 each. The rifles aee extremely accurate given all the reports I have gotten. I do recommend an adjustable gas block for a but more flexibility in loading. Reliability has been no issue.

Greg
 
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I am planning on going with an 18" barrel because I will be shooting it suppressed. With only 27 to 30 gr of powder is the longer barrel really needed? Also is necking down the brass done in two or three passes?
 
Originally Posted By: coyotesmokeI am planning on going with an 18" barrel because I will be shooting it suppressed. With only 27 to 30 gr of powder is the longer barrel really needed? Also is necking down the brass done in two or three passes?

This was designed as a high velocity round equivalent to the 22-250. To get there we wanted no less than 22". Even short though it leaves the other 22's in the dirt.

Three passes with bushings. CH4D makes a regular rie that would be a bit faster but I would still do it in two. I kind of cheat.az I have a 6.5,25, 243 and 22 versions so I step down and start with 200 cases doing 50 at each step so I don't notice the bushing changes. Since the brass lasts forever loading sainly I don't mind the work.

Greg
 
I was never able to get 22-250 speeds from the 22 DTi(same as 22X6.8spc but with a improved shoulder)but speeds in the 223AI range or slightly better are certainly attainable.
I checked my data and these are bullet weights and velocities from a 1/12 twist 24 inch Shilen barrel.

35gr 4220fps
40gr 3680 to 3820 depending on powder
50gr 3410 to 3565(AR Comp)
53gr 3284 to 3445 depending on powder
60gr 3348 great load
69gr 2990 to 3048 tried H4895 and AA2520

I would be interested in the powder that can move the 69gr 3300fps
 
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The 22X6.8 is running 3800 with RL 15. Only 3285 with the 69's using CFE. Brass life is good and accuracy is excellent. 1:8 24" Black Hole 3 groove polygonal rifling.

Greg
 
Originally Posted By: venaticI was never able to get 22-250 speeds from the 22 DTi(same as 22X6.8spc but with a improved shoulder)but speeds in the 223AI range or slightly better are certainly attainable.
I checked my data and these are bullet weights and velocities from a 1/12 twist 24 inch Shilen barrel.

35gr 4220fps
40gr 3680 to 3820 depending on powder
50gr 3410 to 3565(AR Comp)
53gr 3284 to 3445 depending on powdere
60gr 3348 great load
69gr 2990 to 3048 tried H4895 and AA2520

I would be interested in the powder that can move the 69gr 3300fps

I am getting 3360 with Sierra 70 grain bullets in my 6-6.8. I would think 3300 from a 60 grain .223 bullet would be fairly easy.
 
Originally Posted By: R15 PredatorOriginally Posted By: venaticI was never able to get 22-250 speeds from the 22 DTi(same as 22X6.8spc but with a improved shoulder)but speeds in the 223AI range or slightly better are certainly attainable.
I checked my data and these are bullet weights and velocities from a 1/12 twist 24 inch Shilen barrel.

35gr 4220fps
40gr 3680 to 3820 depending on powder
50gr 3410 to 3565(AR Comp)
53gr 3284 to 3445 depending on powdere
60gr 3348 great load
69gr 2990 to 3048 tried H4895 and AA2520

I would be interested in the powder that can move the 69gr 3300fps

I am getting 3360 with Sierra 70 grain bullets in my 6-6.8. I would think 3300 from a 60 grain .223 bullet would be fairly easy.

It is easy. Note that I showed 3348 with the 60gr above.
It's also quite easy to push the 70gr that speed in the 6MM version (DTi)

The reason I was asking is I am looking at a fast twist 22Dti to run 75gr Amax's and if 3300 is doable in the straight 22-6.8spc with 69gr bullets then 3300 should be doable in the 22DTi with the 75gr projectile with the Improved shoulder.
Just was wondering what powders could achieve that. I am hearing fast twist 22-250's only push the 75gr at 3350fps with 24-26 inch barrels. Not sure but just based on powder capacities not sure this all adds up.
 
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