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Post by normrep on Mar 24, 2015 8:10:38 GMT -5
I've just started shooting a TC Encore 20" Katahdin 45/70 conversion barrel with a Savage breech plug. The scope base threads are visible inside the threaded area that accepts the breech plug. I have been shooting a single charge of H4198 in the 55 grain range with a light blue sabot and 200 grain XTP's. I think this is considered a moderate load by most here, but as I've read other posts, I'm wondering if the holes in the breech area will eventually lead to a safety problem - and if so, how do you know when you're reaching that safety threshold. I never plan to shoot loads that are hotter than the ones mentioned here. I'm a hundred yards or less deer hunter that prefers the lower side of recoil. But being new to smokeless, I'm interested in all the safety information I can get. Thanks for your thoughts...
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Post by ratsnakeboogy on Mar 24, 2015 9:44:57 GMT -5
I have one just like yours. I top out at 60gr H4198, but have backed off to 57gr for hunting. I would have no problem shooting 250 with that load, so at 100 and in you have all the load you will ever need. I shoot the Barnes 195 Light Blue Crush Rib.
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Post by fishhawk on Mar 24, 2015 10:45:59 GMT -5
You will be fine up to 62gr of H4198. It's just in the case of a loading mistake such as a double charge of powder or a complete double load that you have more chance of a barrel failure that in a bolt gun with a reasonable contour.
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Post by cowhunter on Mar 24, 2015 12:23:37 GMT -5
If the holes are drilled directly above the plug, and no gas is escaping, I wonder if they would ever be the area of failure?
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Post by ratsnakeboogy on Mar 24, 2015 13:18:56 GMT -5
If the holes are drilled directly above the plug, and no gas is escaping, I wonder if they would ever be the area of failure? Probably not, but it would be VERY bad juju if it did fail at the plug, I don't even want to imagine the carnage. |
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Post by normrep on Mar 24, 2015 14:20:27 GMT -5
Now you guys are scaring me just a little. But as fishhawk mentioned below, it most likely would be a mistake on the part of the operator (like a double charge) to cause a catastrophic failure. At least I hope that would be the case. You will be fine up to 62gr of H4198. It's just in the case of a loading mistake such as a double charge of powder or a complete double load that you have more chance of a barrel failure than in a bolt gun with a reasonable contour. Nevertheless I wonder about the vulnerability of the barrel with the scope base holes drilled directly above the plug. But what's your alternative if your old eyes can't see the iron sights anymore, other than a full bull barrel. I would think the plug would have enough strength to fill in any pressure gaps at that point - again - unless there was a super charge loaded by mistake - and in that case, nobody's safe! |
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Post by ratsnakeboogy on Mar 24, 2015 14:30:36 GMT -5
I could be wrong, but I don't think a full bull will do much for the plug/scope mount issue. It's not going to be any beefier at the plug end, unless I'm thinking about it wrong.
Luke's smaller diameter plug will make a bit of a difference on a conversion that hasn't been done as of yet.
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Post by deadeer on Mar 25, 2015 1:02:14 GMT -5
I could be wrong, but I don't think a full bull will do much for the plug/scope mount issue. It's not going to be any beefier at the plug end, unless I'm thinking about it wrong. Luke's smaller diameter plug will make a bit of a difference on a conversion that hasn't been done as of yet. Right on Don. Encore breech end is same for all contours. Jay |
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Post by muznut on Mar 28, 2015 15:39:41 GMT -5
I've just started shooting a TC Encore 20" Katahdin 45/70 conversion barrel with a Savage breech plug. The scope base threads are visible inside the threaded area that accepts the breech plug. I have been shooting a single charge of H4198 in the 55 grain range with a light blue sabot and 200 grain XTP's. I think this is considered a moderate load by most here, but as I've read other posts, I'm wondering if the holes in the breech area will eventually lead to a safety problem - and if so, how do you know when you're reaching that safety threshold. I never plan to shoot loads that are hotter than the ones mentioned here. I'm a hundred yards or less deer hunter that prefers the lower side of recoil. But being new to smokeless, I'm interested in all the safety information I can get. Thanks for your thoughts... I wouldn't want my scope mounting holes drilled all the way through to the breech plug threads. That said the 55gr of 4198 and a 200gr bullet isn't that much pressure. |
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Post by scottypotty on Mar 28, 2015 18:23:13 GMT -5
I have an encore with savage plug and 45/70 bergara barrel. Its 24" long a little heaver profile than the Katahdin, but it also has the rear 2 holes which are drilled into the threads. Slufoot warned me of this before he did the work, I guess most of them are like that.
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