My first 300 BLK suppressor Form 1 CAD design

[sanity1676]

Can this is my first can design 1.5 inch blast chamber 4 50 degree baffles bored .320, one flat blast baffle, SS baffles. 7.8 inch can, D sized tube. Direct thread adapter is High carbon steel, all else is TI or SS. Going to be used on 300 blk, and maybe some 308.Making sure its as good as i can make it before i file a form 1 with this design . Tell me if my design is crap or any advice to make it better?
CROSS SECTION
https://imgur.com/a/2pq1N7d

EDIT:
MK II cutaway after a Critique from those more knowledgeable.
https://imgur.com/a/xokiTlo

[fishman]

Are you making these baffles and caps from purchased parts, or from scratch? The endcaps look unnecessarily heavy.

[sanity1676]

Are you making these baffles and caps from purchased parts, or from scratch? The endcaps look unnecessarily heavy.

they are premade parts, i was just modeling them quickly without detail.
https://diversifiedmachine.us/product/l ... le-endcap/ Titanium.
high carbon steel direct thread https://sdtacticalarms.com/Old-school-D ... _1212.html

[fishman]

Id squeeze more baffles in there. A lot more. Take a look at modern top performers like the sig srd762 and the dead air sandman L.

Most manufactures use evenly spaced baffles. These manufacturers have R&D budgets that dwarf hobbyists' budgets. Make use of it.

[ECCO Machine]

Those are 80° cones, not 50°. 50° are more acute than 60°, not less. Sometimes this gets mixed up, people talking about the lathe compound angle or angle of one side of the cone relative to the face. Problem is lack of reference; is the point from which you're measuring the opposite or adjacent? Is the lathe compound reading 90° or 0° when parallel with the cross slide?

The proper way to describe a cone/taper and avoid such confusion is to denote the included angle.

At any rate, for subsonic 300 blk, not enough baffles, too much blast chamber. For supersonic .30 cal, still not enough baffles. You'll have to decide if you're optimizing for subs or supers, and I'd recommend steeper cones, especially for supersonic rounds.

[fishman]

0.320" is way too small I missed that the first read through, and assumed you were making a 223 silencer with a .320" bore

[sanity1676]

0.320" is way too small I missed that the first read through, and assumed you were making a 223 silencer with a .320" bore

would .357 holes in the baffles be better? what size? im going to redo it with a 1 inch blast chamber, and just going to stack baffles leaving a half inch of spacer at the end before the bullet exits in my new model. does this sound better?

[sanity1676]

Those are 80° cones, not 50°. 50° are more acute than 60°, not less. Sometimes this gets mixed up, people talking about the lathe compound angle or angle of one side of the cone relative to the face. Problem is lack of reference; is the point from which you're measuring the opposite or adjacent? Is the lathe compound reading 90° or 0° when parallel with the cross slide?

The proper way to describe a cone/taper and avoid such confusion is to denote the included angle.

At any rate, for subsonic 300 blk, not enough baffles, too much blast chamber. For supersonic .30 cal, still not enough baffles. You'll have to decide if you're optimizing for subs or supers, and I'd recommend steeper cones, especially for supersonic rounds.

Are these cones better? ( https://imgur.com/a/a6OkqPc ) thank you, it will be primarily used for subsonic 300 blk, I also changed blast chamber to 1 inch from 1.5, on my 2nd attempt, will post an updated drawing here with WAY more baffles (10+)

[ECCO Machine]

Are these cones better? ( https://imgur.com/a/a6OkqPc ) thank you, it will be primarily used for subsonic 300 blk, I also changed blast chamber to 1 inch from 1.5, on my 2nd attempt, will post an updated drawing here with WAY more baffles (10+)

I don't know what I'm looking at there, but 60° is common for a reason. I run my rifle cans a little steeper for the most part, and on some run progressively shallower angles from rear to front (30, then 40, 50, 60, 70, 80 and finally 90 with a 50° tip) but had pretty good results with a stack of 60°s for typical 1.5x8, 1.5x9 size cans.

In an 8" can, 10 or 11 baffles with progressive but fairly tight spacing will do fine for 300 blk subs and not bad for supers.

[sanity1676]

I updated the blast chamber to 1 inch vs 1.5 inches, no more flat blast baffle, added baffles, made sure baffles were 60 degrees, and changed bore for 300 blk suppressor to .357. here is MK 2. Is this a better design? what are the remaining flaws? 17 baffles.


MKII Cutaway

https://imgur.com/a/xokiTlo

[sanity1676]

Are these cones better? ( https://imgur.com/a/a6OkqPc ) thank you, it will be primarily used for subsonic 300 blk, I also changed blast chamber to 1 inch from 1.5, on my 2nd attempt, will post an updated drawing here with WAY more baffles (10+)

I don't know what I'm looking at there, but 60° is common for a reason. I run my rifle cans a little steeper for the most part, and on some run progressively shallower angles from rear to front (30, then 40, 50, 60, 70, 80 and finally 90 with a 50° tip) but had pretty good results with a stack of 60°s for typical 1.5x8, 1.5x9 size cans.

In an 8" can, 10 or 11 baffles with progressive but fairly tight spacing will do fine for 300 blk subs and not bad for supers.

https://www.badgerridgeind.com/store/p2 ... 21%21.html this is what I want to Buy and use, im trying modeling them?

[fishman]

My baffles are .375" bore.
The general rule of thumb is 50-100 thou oversized. The difference in performance between .357 and .375 will be unnoticeable, but you'll have less poi shift and less potential for baffle strikes the bigger you go

[ECCO Machine]

I updated the blast chamber to 1 inch vs 1.5 inches, no more flat blast baffle, added baffles, made sure baffles were 60 degrees, and changed bore for 300 blk suppressor to .357. here is MK 2. Is this a better design? what are the remaining flaws? 17 baffles.


MKII Cutaway

https://imgur.com/a/xokiTlo

Too far to the other extreme. You don't need 17 baffles, just gonna make it heavy and take up internal volume, possibly reducing performance. Like I said above, 10 or 11, maybe 12. As for formed freeze plugs.....yeah. If you can afford proper machined "solvent trap cups", go that route. You can't go back and re-do your stack later, end up having to file another $200 F1 or pay one of us SOTs to do it, so better to make it right the first time.

.357" would be as small as I'd ever go with .308" cal apertures. Mine are all .365" ±.003. .050"-.060" diametral clearance with max bullet diameter is industry standard; almost any commercial .30 can you put a caliper or inside mic to will be between .360" and .370". Never go less than .040".

[sanity1676]

I updated the blast chamber to 1 inch vs 1.5 inches, no more flat blast baffle, added baffles, made sure baffles were 60 degrees, and changed bore for 300 blk suppressor to .357. here is MK 2. Is this a better design? what are the remaining flaws? 17 baffles.


MKII Cutaway

https://imgur.com/a/xokiTlo

Too far to the other extreme. You don't need 17 baffles, just gonna make it heavy and take up internal volume, possibly reducing performance. Like I said above, 10 or 11, maybe 12. As for formed freeze plugs.....yeah. If you can afford proper machined "solvent trap cups", go that route. You can't go back and re-do your stack later, end up having to file another $200 F1 or pay one of us SOTs to do it, so better to make it right the first time.

.357" would be as small as I'd ever go with .308" cal apertures. Mine are all .365" ±.003. .050"-.060" diametral clearance with max bullet diameter is industry standard; almost any commercial .30 can you put a caliper or inside mic to will be between .360" and .370". Never go less than .040".

Where can i buy machined cups? how much? Also, can I get them in omega style? Would that make it much better? Thank you for helping me, i dont know what im doing and im trying to learn before i waste my money. This any good? https://www.wedgemachineworks.com/produ ... 8620725768

[VinnieBoomBah]

Where can i buy machined cups? how much? Also, can I get them in omega style? Would that make it much better? Thank you for helping me, i dont know what im doing and im trying to learn before i waste my money. This any good? https://www.wedgemachineworks.com/produ ... 8620725768

These are better https://totalityindustries.com/shop?olsPage=products