Making a BPCR blow tube

[TexasMac]

Hey guys,
 
I just authored and posted a new article titled: MAKING A BLOW TUBE FOR BPCR SHOOTING (http://www.texas-mac.com/Making_a_Blow_Tube_for_BPCR_Shooting.html).  It includes a discussion on various techniques, design concerns and even has a few photos.  I know many of you have made blow tubes and most of the info will not be new to experienced BPCR shooters.  But the subject can be confusing to new shooters and some of the design concerns may not be appreciated by even you experienced guys.  After you’ve read the article, check out some of the other articles and stuff on the site.
 
I’m about to head out to my Texas hill country deer lease for a final season hunt so wish me luck.  Sure hope y’all have a great New Year.
 
Regards,
Wayne

[rbertalotto]

I've been busy in the Blow Tube making also......

One for the Rolling Block



And one for the Sharps and 1885 Winchester



I started out with a 45-70 case as Mac describes in his article. And a 44Mag case is used to step it down to the plastic tube.



First, drill out the 45-70 case to the outside diameter of your 44mag case



Then drill out the inside of the 44Mag case to the major diameter and grind most of  the rim off the case. Leave a very little lip so it won't pull out of the 45-70 case.



Slide the 44Mag into the 45-70 and super glue the seam (or you could just as easily solder it) It is a very tight fit and Super Glue will hold it fast.



Slip a piece of 3/8ID plastic hose over the 44Mag case and you are done. You might need to heat the tubing up a bit with a low temp heat gun as it is a very tight fit on the 44 Mag case.

For the Remington Rolling Block I had to make a modification because the 45-70 barely fits over the hammer on these rifles with out the extension. So it needed to turn a corner.
A short piece of copper tubing bent 90 degrees and super glued into the 45-70 case solved this issue.



At the other end I built up the diameter of the copper tubing with a 38 Special case and a 41 Magnum case. One inside the other. Super Glued together.

Now to go moisten some black powder fouling!