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Post by yanman on Feb 6, 2023 22:02:24 GMT -5
Howdy guys I’m new here and new too the smokeless muzzleloader world..I order a reloading manual today and I’m fairly familiar with the Weight vs volume deal between smokeless and blackpowder…does any one have REAL WORLD experience with this barrel and maybe powder recommendations and bullets.?
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Post by joelmoney on Feb 6, 2023 22:28:01 GMT -5
What plug are you running?
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Post by buckeye68 on Feb 6, 2023 23:20:04 GMT -5
I’m not to sure what you going to get out of a reloading manual for a smokeless muzzleloader but there’s lots of good information on here if you spend some time reading through previous post.
If you already have a SML you may want to post what you have with all the detail on barrel profile, length, plug, what kind modules you have and what your ignition source your using. The more details give the better information you’ll receive.
Good luck and enjoy!
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Post by yanman on Feb 6, 2023 23:50:01 GMT -5
I plan on starting too reload is why I acquired the reloading book…I figured it would give me a heard start on learning a little…it’s a SMI smokeless muzzleloader barrel for a H&R handi rifle with 209primer caps and the SMI breech plug
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Post by yanman on Feb 6, 2023 23:52:04 GMT -5
What plug are you running? It’s the 209 breech plug from smokeless muzzleloader inc barrel for a H&R platform not sure on the barrel length just yet I’m waiting on it in the mail I acquired it from a friend who passed and never shot it
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Post by yanman on Feb 6, 2023 23:52:39 GMT -5
Hex bolt takes 209 primers wish I could upload a pic
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Post by joelmoney on Feb 7, 2023 0:19:52 GMT -5
I personally don’t run one but it was a question I knew was going to be asked. I would assume operating pressures would be very similar to a CVA. Bushing size is another factor you will need to know about.
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Post by yanman on Feb 7, 2023 0:35:20 GMT -5
I personally don’t run one but it was a question I knew was going to be asked. I would assume operating pressures would be very similar to a CVA. Bushing size is another factor you will need to know about. Thanks ima get some more info and post again
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Post by joelmoney on Feb 7, 2023 0:40:30 GMT -5
Many of us are here to help.
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Post by Sideshow on Feb 7, 2023 4:43:46 GMT -5
I personally don’t run one but it was a question I knew was going to be asked. I would assume operating pressures would be very similar to a CVA. Bushing size is another factor you will need to know about. Thanks ima get some more info and post again Most of those if memory serves me are stubbed in on shotgun barrels and actions . Ive read posts in the past with the builders , SMI , contact info listed there . I honestly cant remember if it was Dougs Message Boards or Modern Muzzleloader ?? I do know the loads are MUCH Lighter Loads !!! The barrels rate of twist is usually pretty slow too so no heavier bullets . I also believe bullet to bore is forbiden and theyre sabot only !!! If i were you id look over Dougs and/or contact GM54-120 on Modern Muzzleloading for SMI Contact information . Its out there !!! Just dont assume this is a heavy duty build Because IT ISNT . Some real caution should be used on this rifle . No Joke !!! PLEASE DONT LOAD IT LIKE IT IS A CVA OR ENCORE CONVERSION !!!! IT CANT HANDLE THAT !!!!
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Post by hillbill on Feb 7, 2023 5:31:56 GMT -5
First off when you get it make sure the barrel is in good shape, take the breech plug out and inspect it, take some pictures of both ends of the plug and post them here. Also measure the barrel breech and give the diameter and for how far before it starts to taper, also total length of barrel with the muzzle diameter. I've seen these before years back and if I remember correctly they were Pacnor blanks? The breech plug pictures is one of the key factors in determining what to recommend.
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Post by sew on Feb 7, 2023 12:57:01 GMT -5
The original SMI barrels had a fixed (no bushing nor ventliner) BP. They were 36” twist, 28”, 50 cal Douglas 20X barrels. The recommended load was 72g 2015/300 SST in a MMP HPH 12. They are/were extremely accurate. Ron Name made them in the machine shop where he worked. I think that the orifice on any used SMI BP would need to be carefully measured. I do not know the original size. He made these since 1984 to the best of my remembrance.
I experimented with many loads and could not equal the recommended load’s accuracy. I expect a 300g Pittman or Fury would have a better BC and have some improved accuracy.
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Post by Sideshow on Feb 7, 2023 13:01:07 GMT -5
SMI Shop phone # 765-998-7320 This number was valid as of 11-14-2019 as given by the Owner of SMI . No Guesses as this IS who made them and will have parts too . If youd post what you find out that may help any future guys that come along that would be great . Loads ?? Address ?? Good luck !!!
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ronc
Junior Member

Posts: 74
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Post by ronc on Feb 7, 2023 13:04:08 GMT -5
I have 2 SMI smokeless barrels on the H&R shotgun actions, a 45 and a 50 cal. Ron Name told me he got his barrels from Douglas. He said the 50 cal was a 1 in 32 twist and the 45 was a 1 in 22 twist, the best I can remember. Mine are both 28" barrels.
That was in his early days and my 45 cal barrel was the first one that he did and worked up his loads from. He also had some pressure problems with his early breech plugs, he was drilling them with .030" bits.
When you get it, you can PM me your phone # and I'll help you with what I know about them.
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Post by sew on Feb 7, 2023 15:37:28 GMT -5
I think that he changed to 32” sometime after I got the 36”. Regardless, the 36” was extremely accurate. At the time I asked why 36 was chosen.
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Post by Sideshow on Feb 7, 2023 16:25:09 GMT -5
I think that he changed to 32” sometime after I got the 36”. Regardless, the 36” was extremely accurate. At the time I asked why 36 was chosen. Sew some things make no sense to me either . Im amazed though some somehow make them work !!! Pretty perplexing at times...... Ive always found faster twists more forgiveing on loads and easier for development too . All i can say is i dunno ?? I suppose that this just is one of those times .
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Post by Sideshow on Feb 9, 2023 9:21:00 GMT -5
What plug are you running? It’s the 209 breech plug from smokeless muzzleloader inc barrel for a H&R platform not sure on the barrel length just yet I’m waiting on it in the mail I acquired it from a friend who passed and never shot it Yanman going over this thread i see where this barrel is on a H&R Handi-Rifle frame . There IS a structural difference between the handi-rifle frame and the H&R shotguns and smaller pistol cartrige cf frames . The Handi-rifle has internal bracing throughout the central part of their actions and faces internally as well as metalurgical differences , i believe as well , to prevent frame stretch that the lesser actions lack . Just to post this info , ive seen the mating face of the actions braced with 5/16 4140 steel and different longer firing pins fashioned to improve the strength of the older Non-handi rifle actions from collapseing there when converted . A surface case hardened heat treat was also done to strengthen the frame from stretching . If id ever do anything with it , i have a really old 1925 H&R Hammerless shotgun action and barrel that i would do this with it for sure for a conversion as once was planned . Like i said this is just a FYI for guys contemplateing this conversion for the sake of reliability and strength . Especially if some increased velocity is desired coupled with a stouter barrel . Just figured id share this here.....
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Post by sew on Feb 9, 2023 10:30:04 GMT -5
FWIW, Ron N required that the action of the NEF/H&R be sent to him when getting a SMI barrel. This likely has to do with what Sideshow just posted.
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Post by YankeeReb on Feb 9, 2023 18:42:12 GMT -5
If you had the rifle frame you were good to go but it still had to be sent to smi for fitting the barrel because of tolerances we not close enough for one size fits all. Btw I heard Ron Name died.
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Post by Sideshow on Feb 9, 2023 21:36:19 GMT -5
Post in thread 'SMI Breech Plug & Vent Liner' www.modernmuzzleloader.com/threads/smi-breech-plug-vent-liner.34446/post-285968Yes i see now Ron Name did pass on . Dennis DeWitt his partner has taken over . All the wanted info about SMI can be found here . Ive seen Mr Dewitt's work beyond this basic barrel swap and he is one talented fellow that isnt afraid of custom work done well and reasonable . A good guy to know of . I do apologize i shouldve just posted this link before . But i guess its also good the other info has been made known .
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