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Post by dave d. on Jan 16, 2010 22:36:05 GMT -5
:)guys while I am awaiting the lehigh conversion I decide to convert the plug I had to shoot cases like all my other muzzleloaders. First thing I did was cut off the nipple from the plug so I just had a hex. Then drilled a .156 hole threw the plug and tapped it for a 10/32 screw. Then I opened the hole in the primer end for 1/4"x20 about 5/8" deep for my cap screw which left room for headspace adjustment. Here's a pic:  then once I had my headspace I locked it in with the ventliner (ml1)from the powder end. Here's a pic:  now I have some cut down .243 cases that I use with my converted encore that fit perfect in the knight bolt and slip over the cap screw perfect: here's a couple pics:   here's a pic of the bolt closed:  when I was planning all this in my head I figured there would be some hicups along the way but to my surprise it worked perfect. All my conversions to cases has resulted in zero blowback so I'm keeping my fingers crossed. I hope to test it in the next couple weeks. |
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Post by smokeless77 on Jan 17, 2010 1:59:43 GMT -5
dave d.
That seems like a nice simple set-up. I don' see why it would not work for a custom smokeless M/L. I will have to try that out.
Thanks Dave John
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Post by Al on Jan 17, 2010 4:28:12 GMT -5
Dave, something to look at.......... is the face of that 1/4" cap screw flat enough to give a good seal in the bottom of the primed case?
Nice thing once it's set up, you'll have a reference for your OAL, if you have to make changes or make another plug.
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Post by mountainam on Jan 17, 2010 8:28:21 GMT -5
Dave, Way to IMPROVISE ADAPT AND OVERCOME! It solves the flaw that loyal Knight owners have with torching the finish off their scopes. And it give some of us reloaders another use for our coffee can full of split cases. Are ML I vent liners still readily available or is there a way to use liners from the ML II? Great job! To me, we should never be using shotgun primers for ignition anyway. It just piles on more problems.
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Post by dave d. on Jan 17, 2010 12:57:05 GMT -5
:)john thankyou.i've been wanting to do this for years. now to incorperate it to my smokeless guns.i'd have it done today but between football and family it's not going to happen. i have the 1/4x20 set screws already to do the job but i just don't know if there is enough sealing surface yet so that will have to be seen in the coming months.
:)al it appears to be making good contact for i get alittle scrape all the way around the bottom of the case.referencing oal's is very important so i'll make sure it gets noted with the rest of them.thankyou very much for all your help.
:)mm thankyou very much.i'm not sure if they still sell them but if i had to guess i would say yes.ml2 vent would work but not like the way mine is setup.you see the ml1 set screw jams up against the cap screw which holds everything tight i don't even need loctite.also allows for no leakage into the space were it is tapped for the 1/4x20 headspace cap screw.one other thing is if you use a regular vent screw your flame path goes from .875 with set screw to 1.3+ unless you recess.for bh i wanted i very short flame path the set screw accomplished 2 jobs perfectly.the set screw was so easy i only had to open the flame hole up the .156 then tap then a #7 hole about .625 deep and tap.this conversion was so easy even i dumb ironworker like me could do it ;D.
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Post by smokeless77 on Jan 17, 2010 19:59:05 GMT -5
dave d.
What size hole are you going to use going through the cap screw.
John
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Post by dave d. on Jan 17, 2010 21:18:57 GMT -5
:)john .100.
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Post by joegun53 on Jan 18, 2010 12:48:05 GMT -5
Would this work on a Knight regular orange disc ML?
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Post by dave d. on Jan 18, 2010 16:55:58 GMT -5
 Joe I don't know what the bolt on the original disc looks like so I couldn't tell you sorry.
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Post by smokeless77 on Jan 22, 2010 10:24:19 GMT -5
dave d.
I made a plug for my smokeless m/l like the one you made here. I had 5 good tight fitting cut off 6mm winchester rifle brass and 2 were soso, With large mag rifle primers. The looser 2 did not go bang. I did notice it had slight leakage on one area of the brass. I Jigged it in the lathe and faced off the cap screw so it was flat and true. The cap screws are not made perfect, and when tapping threads could be a hair off. Just a heads up when you go to do your head spacing. when I get to try it again I will let you no how it goes.
Thanks John
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Post by dave d. on Jan 22, 2010 11:10:36 GMT -5
:)john thanks for the heads up but I've been Down that road before and you really need a tight fit for lrm's. Also Make sure that you do not have more then a 1.2 oal for your flame Path.if you do just recess your plug. Goodluck and keep me posted on how it works out. oh I more thing I found fed 215's to be the hottest.
John what was your flame length?
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Post by smokeless77 on Jan 22, 2010 19:29:53 GMT -5
Dave
Without my mic using a ruler it is 15/16". I do use the 215s but the other day I used win l/r primers to get rid of them. that is probably why the 2 loose cases did not go boom. I will be back at in the morning experimenting once again. Also made one with knights red hot musket nipple. The solid modules will shoot any powder but a PITA to make if you loose them
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Post by KerryB on Jan 23, 2010 9:47:19 GMT -5
I noticed you are using .100 through the cap screw. What diameter ventliner opening are you going to try? What powders are you planning on igniting? Do you have the original barrel on the rifle or an aftermarket smokeless? Do you have any concerns about the pressure containing ability of the exposed threads of the capscrew outside the breechplug? I realize that most of the highest pressure will be contained at the ventliner. Just wondering how thick the material is in the capscrew at the thinnest point of the threads once you drill the .100 through it? Thanks, KerryB
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Post by dave d. on Jan 23, 2010 22:42:58 GMT -5
:)kerry the minor dia of a 1/4x20 cap screw is .199 so there is around .050 meat which is just a tad under the ventliner which is around .0625.this gun can not have a aftermarket barrel because the action and barrel are one piece and it will only see bh209.the ventliner is a ml1 which has a .031 hole.
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Post by screwbolts on Jan 24, 2010 10:36:51 GMT -5
KerryB,
Did you notice that Dave is using the vent liner from a ML10, not a ML10II. Yes they are different.
DaveD,
In your post did you really want it to be .0625, or .625? ;D
And the .050 is plenty I believe also!
Ken
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Joe I don't know what the bolt on the original disc looks like so I couldn't tell you sorry. 