Thread: Oceania Defence suppressors

Its probably just ME , but I like a suppressor to actually suppress , I have NEVER heard any one say , this suppressor is too quite ,, make it louder .
Mostly , I am only talking of making the can a few inches longer ,and getting far better result ,
Most here in NZ have not used a can like that made by BT in Switzerland or the old ATEC cans , and If they had , may realise how poor some of the NZ cans rate against them .
And if you read what I said , I would send ODL copies of some of the articles I have on US designs for FREE , and YEAH , In my world thats helping .
Sorry If that offended you , was not meant that way .

Later Chris

I am never one to pass up free info so here is my contact address info: https://oceania-defence.com/index.ph...lqtdg1oqdnl3n7 Thanks for the offer.

I have read Paulsons books and think they are outstanding history. Things have progressed pretty fast in the last decade and everyone wants smaller lighter quieter. IF Paulson does another book, I expect to get a good chunk of a chapter in it! I have been experimenting with all the established baffle shapes and have developed my own shapes that work very well.

There are about four general concepts for suppression and a lot of very subtle tricks that no one will talk about (and neither will I). It takes a lot of time to get the subtle tricks down and a lot of money making experimental models. You can straight up copy designs but unless you understand the concepts, you will never get the full benefit from the copy.

I may have to do as Gimp suggested and accommodate both ends of the scale with the quietest model on the QD.

In my case as a bolt gun hunter, especially in the bush I'd want one as short forward of the barrel as possible, I currently have a 19" barreled rifle that has a gunworks suppressor that is 5" forward, 24" in total & I find it's not ideal for bush hunting & have stopped using it in the bush, which is where I'd like to use a suppressor as you never have time to put ear plugs in, it's fine in open country.

I find my 20" barrelled Sako with ~5.5" muzzle forward can too long when picking my way through bush/scrub etc so I have gone to a shorter option by about 5", with the same barrel length

Originally Posted by gimp

I find my 20" barrelled Sako with ~5.5" muzzle forward can too long when picking my way through bush/scrub etc so I have gone to a shorter option by about 5", with the same barrel length

Doesnt that make the can .5 inch?

Originally Posted by Gibo

Doesnt that make the can .5 inch?

Totally different setup... 3 inch shorter action.

Gimp, does that make any difference in sound moderation "to you"? It is a kind of "stupid" question, but, it is to show the others that you may need to go with what your needs are and with what the manufacturer can offer you at the time. I just bought another suppressor for my "long range" ish setup and it is a muzzle forward in about 8-10" what for me is fine.
IMHO, @ODL you have the "basics" in what most of "us" wish and you should focus in two or maybe three line of products for each segment of rifles(bolt and SA). Remember, "it is just a say", "even jesus christ didn't make everybody happy, so why ODL need to?"

My apologies for those who may take it as offensive, i wish "I" could have everything i want in my own way, but i need to be satisfied with what i can have.

All the best guys and girls, ODL keep the great work!

Mac

Originally Posted by PERRISCICABA

Gimp, does that make any difference in sound moderation "to you"? It is a kind of "stupid" question, but, it is to show the others that you may need to go with what your needs are and with what the manufacturer can offer you at the time. happy

Thats true to a point, but ODL was asking what people would like? Whether everyone can be accomodated is another story all together! A lot of bush hunters I'm sure would like to save there hearing & their dogs without having to turn their rifles into bushpigs.

OK, Just finished testing the new 556 can. It is truly minimalistic for weight and size. This is about the smallest I can build for 556 and keep it hearing safe. This is what I will try to do with the 762. Keep in mind it will be much larger to handle about 85% more powder than the 556.

I will put all the boring details on the web site when I put the new can on. Here is the summary all using A weighting and peak hold using a 14.5" AR15 with M193 55 grain ammo:

5 shots at muzzle with no can and 4136 mic at 1.6 high over grass and 1m left of muzzle - 166.1
5 shots at ear with no can and 4136 mic about 50mm right of my right ear - 157.0
10 shots at muzzle with new ODL 556-45 Samson and 4136 mic at 1.6 high over grass and 1m left of muzzle - 137.4
10 shots at ear with new ODL 556-45 Samson and 4136 mic about 50mm right of my ear - 135.1
10 shots at muzzle with new ODL 556-45 Samson and 4134 mic at 1.6 high over grass and 1m left of muzzle - 138.1

I ran two mics to see if there was any major discrepancy. I would consider .7 to be within the range of what this meter can do. The 4134 only goes up to 150 dB so it will not work at the muzzle without a can. I didn't run chrono data on this test but I have run this ammo heaps of times through this rifle and it runs about 2900-3020 FPS.

Strictly from personal opinion, I would prefer to run no muffs and a can to no can and muffs after shooting the short rifle in a bowl. I will put up some exposure limits from a study done regarding higher level noises next week on my website. It will give an idea of how many shots are "safe" at a given dB rating. As always, it would be better to run plugs and a can, but the study will provide a guide to "safe" exposure limits.

That is looking pretty good @ODL

What are the exact specs on the new 556 can @ODL?

ODL 556-45 Samson specs:

OAL - 170.5
Weight - 167 grams
OD - 38
Aft of can to barrel shoulder - 43
End of muzzle to end of can - 110.5
ID of over barrel section - 19.15
Thread - 1/2-28 tpi
One blast baffle
One end cap baffle
Six intermediate baffles using two designs for primary and secondary.
Bullet aperture is taper cut with an exit hole of 7.6mm.

They will be in heat treat over the weekend and will be coated on Tuesday.

Originally Posted by ODL

ODL 556-45 Samson specs:

OAL - 170.5
Weight - 167 grams
OD - 38
Aft of can to barrel shoulder - 43
End of muzzle to end of can - 110.5
ID of over barrel section - 19.15
Thread - 1/2-28 tpi
One blast baffle
One end cap baffle
Six intermediate baffles using two designs for primary and secondary.
Bullet aperture is taper cut with an exit hole of 7.6mm.

They will be in heat treat over the weekend and will be coated on Tuesday.

That is insanely small and light!

Originally Posted by ODL

ODL 556-45 Samson specs:

OAL - 170.5
Weight - 167 grams
OD - 38
Aft of can to barrel shoulder - 43
End of muzzle to end of can - 110.5
ID of over barrel section - 19.15
Thread - 1/2-28 tpi
One blast baffle
One end cap baffle
Six intermediate baffles using two designs for primary and secondary.
Bullet aperture is taper cut with an exit hole of 7.6mm.

They will be in heat treat over the weekend and will be coated on Tuesday.

very impressive specs.

ODL I am still after a can for my 6.5 bolt gun, if only u would make 6.5 or even a 30 cal can threaded 1/2 x 28TPI I would be in for one.

Is this likely to happen ? I know you have concerns regarding "thread strength" but most other can makers will do a can in this calibre with this thread. Is it a particularity with materials you are using that makes this an issue??