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Physics of the Roller-Delayed Kuna

I’m really liking mine. It simply goes through ammo too quickly…lol.
Suppressed, it’s just fun flat out.
I’m going round and round with rounds…lol, to see what I like best out of the suppressor.
So far, and this is a huge surprise to me… but the Federal Syntech 150gr and my Oak Island 124gr reloads are neck and neck in both performance, accuracy, recoil, and sound.
I have a few more rounds I’m gonna try… I have 147 gr Oak Island reloads on the way…but as nice as the federal Syntech are, cost per round, the 124gr OI reloads are in the lead by just a smidge, they shoot softer and are much more economical.
Over the past 5 years, I’ve purchased about 35K rounds of the OI stuff, so I know it’s reliability and accuracy, and it’s run well in every pistol I’ve owned.

I’m at about 500 rounds through my Kuna.. zero failures of any kind despite only being cleaned once and oiled a time or two. I’ve fed it 115 to 158 grain ammo, new, reloads, HST and Gold Dots… not one single hiccup or issue.
 
dajogejr said:
I’m really liking mine. It simply goes through ammo too quickly…lol.
Suppressed, it’s just fun flat out.
I’m going round and round with rounds…lol, to see what I like best out of the suppressor.
So far, and this is a huge surprise to me… but the Federal Syntech 150gr and my Oak Island 124gr reloads are neck and neck in both performance, accuracy, recoil, and sound.
I have a few more rounds I’m gonna try… I have 147 gr Oak Island reloads on the way…but as nice as the federal Syntech are, cost per round, the 124gr OI reloads are in the lead by just a smidge, they shoot softer and are much more economical.
Over the past 5 years, I’ve purchased about 35K rounds of the OI stuff, so I know it’s reliability and accuracy, and it’s run well in every pistol I’ve owned.

I’m at about 500 rounds through my Kuna.. zero failures of any kind despite only being cleaned once and oiled a time or two. I’ve fed it 115 to 158 grain ammo, new, reloads, HST and Gold Dots… not one single hiccup or issue.
Click to expand...
Love mine as well and am around maybe a bit over round count. Curious if you’ve run any flat nose through yours yet. I think I created the perfect storm by not cleaning, running a bucket load suppressed and using up some flat nose. Ended up with a bad feed that didn’t go into breach (good) and was mooshed. Happened twice. First time I thought I loaded it into mag that way.

IMG_7856.jpeg
 
Yes sir I have. the 147 grain federal American eagle (NOT Subsonic, by the way…and had the worst recoil of any ammo I tried so far) and 150grain Syntech, both are flat nose. Probably about 200 rounds combined of each, zero issues.

I finally got bored, Sunday, and broke it down… and I mean all the way down, disassembled the recoil assembly, the roller block assembly, by mistake…figure out how to remove the charging handle… and cleaned/lubed it.
the lower… is the worst to clean. Lots of fine fragments, powder, etc.

But so far, zero issues shooting:
115 and 124 blazer
150 syntech
147 Federal AE
124 Oak Island reloads
158 grain off brand local ‘subsonic” loads

Thursday I get 147gr Oak island to my house to test.
I’m going to see if the Syntech or OI run better…

My mags were a little dirty, to be expected running suppressed, so Sunday I also disassembled them, cleaned them… but again, zero issues thus far. I have not cleaned the can yet, but I have taken it apart several times. I think at/around the 1K mark I’ll give it a good cleaning. Rugged Obsidian 9 on mine with SilencerCo 3 lug.
 
AE was the one i had catch on me.

And truthfully i had barely cleaned it or did much at all prior to the issue so i fully suspect it was my own negligence.

I tore into it the past weekend as well. I had actual bits of “yuck” in the lower i first blew out with canned air.

I cleaned my can a couple weeks ago at about the 800 mark. Have obsidian 45

Will be taking canned tuna out this weekend
 
Yeah, i was amazed how much gunk, powder, overall crap was trapped in the lower. Same, blew it out first…

Let me know what ammo you run with the can, how it turns out for you.
I’m on the quest myself.
 
So far been Speer 147 and hornady 147 subby

Then super has been WWB 115 and that American eagle 147. Oh and maxxtech 124

I will look into Oak island

Will let you know!
 
Sharks79 said:
AE was the one i had catch on me.

And truthfully i had barely cleaned it or did much at all prior to the issue so i fully suspect it was my own negligence.

I tore into it the past weekend as well. I had actual bits of “yuck” in the lower i first blew out with canned air.

I cleaned my can a couple weeks ago at about the 800 mark. Have obsidian 45

Will be taking canned tuna out this weekend
Click to expand...
Ran about 300 rounds of S&B 150gr canned today without any issue at all. Had guy next to me remark how quiet it was and questioned if was .22. Love canned Kuna

IMG_7968.jpeg
 
S&B is the next one I’m gonna try out.
I ran the 147 Oak Island reloads through zero issues, they are very quiet.
I really like the Syntech, but for about 93 bucks more per 1000 rounds… I think the Oak Island may be a winner.
The S&B are about 40 bucks more per 1K.

The Fiocchi 158 grain are even more than the Syntech.. would like to try, can’t justify paying more than Syntech.

I did notice, since the brass reloaded Oak Island is not perfectly rounded/smooth compared to brand new ammo, the Matata did hicuup a few times, I have to give it a lot firmer press to seat the rounds.
But that thing is a lifesaver as well.
 
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