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Flash powder uses Potassium Perchlorate as the oxidizer, NOT KNO3 or Potassium Nitrate.
BIG difference and the type of powdered aluminum used also makes a world of difference in burn rates.

Flash...

Chop it!
To the saw!!!!!!




https://www.youtube.com/watch?v=NJnivVRtTHA

No idea what the composition of 777 is or its burn characteristic but BP burns on the surface and the more surface you have ignited the faster its consumed providing enough oxygen is present to...

I always liked the Ackley improved chambers with the 45 degree shoulder.....

I rolled my own in .45 acp.

http://castboolits.gunloads.com/showthread.php?279817-Enfield-303-conversion-to-45-ACP-with-suppressor

...

Its a crappy video but I definitely know there was a sharper sound using the cone baffles WITHOUT any clipping.
BIG difference in clipping them.

Clipped baffles perform best when all lined up...

Suppressed~


https://www.youtube.com/watch?v=QhUAskXPoYY

Just returned home from the range after test firing with a smile on my face.
This trip I was able to properly attach my suppressor to my rifle and run some ammo thru it. My spacer allowed me to...

Mixed bag for the 1st range trip....

I overlooked a detail on my SIG 716 host rifles with the factory barrel thread and my mounting design. SIG does / did not relieve the threaded diameter against...

+1 on the Sparrow and its an excellent can.

The .223 you have LOTS of choices. Decide if you want to use a direct thread can or one with a QD mount. If you plan on doing mag dumps a full auto...

If the rate of fire is kept within reason ( can not abused by mag dumps or automatic fire ) it will outlive me given normal use.
The blast baffle take the most abuse and its why some people run...

I think the material was around $275 total for the grade 9 tube and grade 5 round titanium.

If you price material the grade 5 round titanium ( solid bar ) really jumps in cost in the larger...

The AAC Cyclone is a great can.

The weight increases quickly when increasing length & diameter. The Cyclone is 1 1/2" X 9.5 long and mine is 1 3/4" X 10 1/4" long.

The cost of titanium jumps...

Welded ~

http://i1329.photobucket.com/albums/w560/jkh62/titanium%20308%20can/NCM_0010_zpsr6iehoo0.jpg

Weld hit with Scotch Brite~
...

After getting sidetracked with numerous auto & home repairs and the work thing I managed to complete my .308 titanium can.....

Finished OAL length: 10.250"
Diameter 1.750 OD.
Wall thickness is...

http://i1329.photobucket.com/albums/w560/jkh62/Break_zpsa9a53035.jpg

My mold arrived yesterday, looks great and cant wait to pour some.

I had grand plans to make a spiffy BPCR box but as much as I hate wood working something fell into my lap at work. One of the carpenters made an upright box to host someone's coffee maker. That...

When black powder is manufactured the loose powder is pressed under tons of pressure into a "press cake". This is the loose powder pressed into a solid mass before it's corned / granulated. The...

A little more elbow grease but cheap and a winter project.
I hate to buy anything sight unseen but your conversion parts look. I would love to see one of your magazine adapters but never saw a...

Black powder density = 1.82-1.89 g/cc

(This is a variable)

I also owned a few Dan Wesson revolvers and their barrel attachment system is WAY better for the owner / user.
S&W has a patent on their attachment process. It works great for them in fitting...

+1 for using an arrow shaft.
An adapter to attach an aluminum funnel on top and a couple O rings to position the shaft in the case works fine.
...

Two unnatural acts :

Jumping out of a perfectly good aircraft with a parachute
&
Putting your new S&W revolver in a bandsaw.

(Have done both with success, knocking wood / tapping head)

The Crosman premier / 7.9 grains shoot great from my rifle.