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Post by gd357 on Mar 19, 2017 17:51:19 GMT -5
Just curious, what kind of life cycle (shot count) do the bushings have?
Any thoughts on flash hole diameter? Any preference .030/.035/.040?
Would like to know what you all think
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Post by hillbill on Mar 19, 2017 18:34:24 GMT -5
personally I use .250x.250x.035s, with IMR-4198 I seldom get any powder pushed through the bushing during loading, with H-4198 you will get some (smaller granules)I also use pure tungsten, some use the 95% with good success also. unless you shoot a lot you will likely never burn one out. I find the .035 a good compromise between the two. the .040 allows more flame to the powder but I have never had a problem with ignition with a .035.
Some others will likely chime in to give their experience, some shoot more than I, some less so an open minded approach should get you where you need to be.
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Post by jimmykip on Mar 19, 2017 19:42:20 GMT -5
I just recently got my first from Jeff. Installed in a CVA Hunter. I have no idea what size it is, or what to look for. About 20 shots so far.
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Post by hillbill on Mar 19, 2017 19:53:06 GMT -5
you likely have a .035.
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Post by jimmykip on Mar 19, 2017 20:12:34 GMT -5
Should I inspect it every so often?
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Post by dennis on Mar 20, 2017 6:52:41 GMT -5
Mine is a HIS209 plug .035 bushing and not ff or complaints.
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Post by Richard on Mar 20, 2017 14:59:21 GMT -5
That is a "loaded" question since it depends on which ignition system you have and what kind of loads you are using. I have tungsten bushing with a .026" hole I use in my 209 gun with Clays duplex loads that have over 400 shoots? Yet with one of Hanks bushings 250x250x035 and the same rifle and load and they are burning up at 50 shots? Yet my HIS system with a 250x250x035 with straight charges and N-110 duplexes----- they are lasting for many hundred shots? With normal straight powder charges (like 4198 and 3031) you should bet at least getting 500 shots on Hanks HIS set up!
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Post by Deleted on Mar 20, 2017 21:27:13 GMT -5
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Post by Deleted on Mar 20, 2017 21:35:56 GMT -5
+1 on the torch tip cleaners. Cheap and very handy
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Post by smokelessk on Mar 20, 2017 22:10:28 GMT -5
Correct me if I'm mispoken, but my understanding is that provided your ignition system isn't leaking your flash hole should last an extremely long time, almost indefinitely. What causes the erosion of the hole to a larger diameter is the hot pressurized gases flowing through the hole and then out past your priming system. If it can't escape past the priming "module" or case or however your gun is set up then there is no large quantity of hot gas flowing through to open the hole up. In my opinion if your priming system doesn't leak don't worry about it.
Just like water flowing through a hole, if it can't flow through how much erosion can it cause?
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Post by Deleted on Mar 20, 2017 22:28:04 GMT -5
Correct me if I'm mispoken, but my understanding is that provided your ignition system isn't leaking your flash hole should last an extremely long time, almost indefinitely. What causes the erosion of the hole to a larger diameter is the hot pressurized gases flowing through the hole and then out past your priming system. If it can't escape past the priming "module" or case or however your gun is set up then there is no large quantity of hot gas flowing through to open the hole up. In my opinion if your priming system doesn't leak don't worry about it. Just like water flowing through a hole, if it can't flow through how much erosion can it cause? Yes, in theory you are correct. What we must take into account is the accelerated rate of burn in a recessed plug with a primer that develops more heat along with an ultra fast powder. While I duplexed my first few hundred shots with the HIS system,, I only used 4759 as a booster. I had a .040 bushing that did not open at all. I fired 1 shot with clays that destroyed a module and that was enough for me. I have made a 209 plug that will substitute the HIS plug in my brux so that I can pressure test both in my Brux barrel. I now have 3 guns that are set up as swingers in that they will shoot either system. |
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Post by gd357 on Mar 22, 2017 11:20:36 GMT -5
Thanks for the info!
Has anyone had any ignition issues with the .030 bushings?
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Post by Richard on Mar 22, 2017 14:30:58 GMT -5
That again, depends on your ignition system and loads? If you were trying to ignite 95 gr. of 3031 with a 209 system with a longer flame channel...........Definitely YES! In that scenario you would probably need a .040 bushing and magnum primers and still might have a problem with ignition. In all probability, you would need to add a booster to get the 3031 fired up. Generally speaking, a .030" bushing is fine with powders like 4198 and loads with a booster.
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Post by gd357 on Mar 22, 2017 20:27:13 GMT -5
Richard, Do you have any issues with booster powders getting thru the flash hole? BTW, will be using the HIS lrmp system...
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