Suppressors - first round impact shift

[Brix8984]

@Formidilosus any update on this or how DD is handling it? The LTI was on my short list as my next can.

 

[bowrunner81]

I have a DD Lti and it has been great with zero issues. I do not have any first-round impact shifts to speak of. I will test it out on a different rifle possibly this weekend. It is currently on a 20" 7prc.

 

[bowrunner81]

Well guess I’ll be the next guinea pig. I’ll compare it to my Hyperion K. Hopefully get to shoot it this upcoming week.

View attachment 775551

Did you get a chance to test this compared to your other suppressor?

 

[TreeDog]

Did you get a chance to test this compared to your other suppressor?

I have not. Got busy with hunting. Probably wont get a good chance until waterfowl season winds down. Plan on giving an update though.

 

[isleofGough]

My TBAC using 155gr 308 ammo 2900 fps:
Suppressor lowers point of impact 0.5 mil and moves to right 0.3 mil

It increases muzzle velocity 14 fps.

 

[omicron1792]

@Formidilosus

My buddy has a begarra 300 win mag with leupold vx6. I know I told him all about it.

He has a q supressor.

His first shot cold bore is off. Sometimes off the paper. Every shot after is dead center. I had him roll the dial on scope up and down and it would still shoot perfect. We would let rifle cool and take off suppressor. Put it back on 15 min later. First shot wildly off. Then every other shot right where he wanted it.

Thoughts?

 

[Formidilosus]

@Formidilosus

My buddy has a begarra 300 win mag with leupold vx6. I know I told him all about it.

He has a q supressor.

His first shot cold bore is off. Sometimes off the paper. Every shot after is dead center. I had him roll the dial on scope up and down and it would still shoot perfect. We would let rifle cool and take off suppressor. Put it back on 15 min later. First shot wildly off. Then every other shot right where he wanted it.

Thoughts?

Zero it without the suppressor. Then see if it does it unsuppressed.

 

[ztc92]

@Formidilosus

My buddy has a begarra 300 win mag with leupold vx6. I know I told him all about it.

He has a q supressor.

His first shot cold bore is off. Sometimes off the paper. Every shot after is dead center. I had him roll the dial on scope up and down and it would still shoot perfect. We would let rifle cool and take off suppressor. Put it back on 15 min later. First shot wildly off. Then every other shot right where he wanted it.

Thoughts?

Put of curiosity, does he use some type of quick detach or is it direct thread? My issues all seemed related to a quick attach system (Xeno) and have completely gone away since switching back to direct thread.

 

[omicron1792]

Put of curiosity, does he use some type of quick detach or is it direct thread? My issues all seemed related to a quick attach system (Xeno) and have completely gone away since switching back to direct thread.

Good question. It is direct thread.

 

[TreeDog]

Finally able to get out and “test” my DD enticer sti compared to CGS Hyperion k. Small sample groups because some idiot (me) forgot to check how much ammo was in the bag before leaving. Rifle is T3x super lite in 6.5cm cut to 18”.
Same lot of factory 140 eldm:


Top left is 6 rounds of factory 143 eldx. Bottom is 3 rounds factory 147. And top left is my T3 308 that I shoot once a year to remind myself why I switched to a a lighter recoiling cartridge in a heavier rifle.



Again, small sample size so take it with a grain of salt.

Plan on ordering a case of ammo very soon and will repeat with more shots.

 

[Jimbee]

2x makes every rifle tried shoot terrible. 1x makes every rifle but one shoot badly. We have not worked through it all yet.




I have had a single can, not like a single barrel or muzzle device once or twice. I have never seen multiple cans make multiple rifles shoot poorly.

Any updates or resolution on this?

 

[Formidilosus]

Any updates or resolution on this?

No resolution. Either stopped shooting them, or put them on rifles that shot fine with them- or where it didn’t matter if they shot 3 MOA.

 

[Jimbee]

No resolution. Either stopped shooting them, or put them on rifles that shot fine with them- or where it didn’t matter if they shot 3 MOA.

Thanks, debating getting another can and keep hearing good things with the exception of your report.

 

[Coleredding00]

For what it is worth, my one and only diligent defense LTI hasn’t caused any cold bore or other point of impact issues on 3 separate rifles. Every single one of my best groups have been fired from it, and i seem to get better results from it than my harvester evo.

Not statistically significant but it is my experience.

 

[DisplacedHusky]

For what it is worth, my one and only diligent defense LTI hasn’t caused any cold bore or other point of impact issues on 3 separate rifles. Every single one of my best groups have been fired from it, and i seem to get better results from it than my harvester evo.

Not statistically significant but it is my experience.

How is the suppression comparison if you’ve shot both cans on the same rifle?

 

[Coleredding00]

How is the suppression comparison if you’ve shot both cans on the same rifle?

Harvester is quite a bit louder. The LTI on both my 22 GT and 6 GT with the 223/6mm end cap is very quiet. The harvester is almost to the point of being uncomfortable if shooting under a metal awning with a 6.5 creed, and the LTI is noticeably easier on the ear. But i feel that it’s to be expected considering th LTI is considerably larger and can use caliber specific end caps where the harvester is fixed to 30 cal.

 

[hibernation]

Update: major props to Brandon and Diligent Defense for CS and standing by their product. As soon as I contacted them and mentioned seeing graze marks / possible baffle strikes, they wanted to see it. I had a prepaid shipping label the next day and their turnaround was extremely fast. They apparently "straightened it up a little" but otherwise didn't mention anything major, and I'm back to shooting it.

I'm shooting it on a Tikka 223 now and will post some groups once I finish testing. Got a 15 round zero at around 1.5 MOA, shooting slow enough to keep mirage from being an issue but definitely not cold. Now I'm shooting 3 rounds each time I go out and tracking 1st, 2nd, 3rd impact. I'll track them all separately and superimpose all the 1st round shots together, etc, and see if there's any meaningful difference.

So far, it seems within normal ranges for dispersion but I'll know more once I can rack up a few more trips and true cold bore shooting.

 

[khuber84]

Update: major props to Brandon and Diligent Defense for CS and standing by their product. As soon as I contacted them and mentioned seeing graze marks / possible baffle strikes, they wanted to see it. I had a prepaid shipping label the next day and their turnaround was extremely fast. They apparently "straightened it up a little" but otherwise didn't mention anything major, and I'm back to shooting it.

I'm shooting it on a Tikka 223 now and will post some groups once I finish testing. Got a 15 round zero at around 1.5 MOA, shooting slow enough to keep mirage from being an issue but definitely not cold. Now I'm shooting 3 rounds each time I go out and tracking 1st, 2nd, 3rd impact. I'll track them all separately and superimpose all the 1st round shots together, etc, and see if there's any meaningful difference.

So far, it seems within normal ranges for dispersion but I'll know more once I can rack up a few more trips and true cold bore shooting.

Sti lti or Wolfhunter? Who cut your muzzle threads?

 

[hibernation]

Sti lti or Wolfhunter? Who cut your muzzle threads?

LTi. Currently on a factory threaded Tikka 223. Originally noticed the issue on a locally cut and threaded 7mm-08 Weatherby Vanguard, saw something similar when I moved it to a factory threaded Sauer 100 6.5 CM.

 

[khuber84]

LTi. Currently on a factory threaded Tikka 223. Originally noticed the issue on a locally cut and threaded 7mm-08 Weatherby Vanguard, saw something similar when I moved it to a factory threaded Sauer 100 6.5 CM.

Man, that 30 cal can to baffle scraping on a 223 would tell me that can is either WAY out of whack, or the muzzle threads are not concentric to the bore, that's a 340 ID catching a 224 bullet diameter.