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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
My 338 Sherman Shortmag
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<blockquote data-quote="tim_w" data-source="post: 1462335" data-attributes="member: 11132"><p>Yes I know its crazy.</p><p></p><p>Also I only pointing out the pressure to just nip that in the butt and not look like its apples to apples. I know some people get bent over pressure from a safety stand point and its good to have a heathly margin even in brass. But after seeing the pressures limits of cases vs barrels bolts receives in the bolt guns used here you have a healthy safe zone between a blown case and firearm going boom etc. Maybe if someone pushed the lower limits in bolt reciever barrel tenon thickness etc. The point being this is not like LM/NM cases in a rem700 and running 70K and getting lug compression/setback. For this case size to S/A receivers the hoop strength is good and bolt thrust numbers from the smaller case head not to mention the effects of the straight case wall offsetting more bolt thrust than these highly tapered cases its really an issue limited to brass.</p><p></p><p>While reading brass is not a viable way to read pressure in absolute terms it does work fairly well for knowing where you are in terms of the limits of the case in that specific gun . In todays bolt actions that is really the main concern the competent hand loader has to worry about IMO.</p><p></p><p>So I have no issues running higher pressures as long as the cases can handle it. But I would not want only 2 loading from a $3 case either. Then again thats up to the person with the wallet. LOL</p><p></p><p>What is nice is when you can find that accuracy node just under where the cases are taking a bit too much abuse. Say 2850FPS 250 Hybrid 3.0"-3.1" COAL 25-26" barrel RL17 That sure would let this short action combo stretch things out there with some authority.</p><p></p><p>BTW what does Quickload say about powder burn percentage with. this type load and barrel length? What percentage of powder is burned after adjusting powder energy to correct vel? With this bore to powder volume ratio and the pressure it has to be really good.</p><p></p><p>BTW speaking of the larger calibers for this case. As vel increases for a given bullet weight as caliber increase think what vel a 250-260 .375 bullet would be maxed at if you are hitting 2900 in the 338<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> Just saying. Make a nice bush gun up north or a short barrel hog gun down south. Imagine what a fast moving flat nose .375 would do driving into that shoulder plate<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek! :eek:" loading="lazy" data-shortname=":eek:" /> . I have seen the kind of hydraulic damage can happen when tissue fluid has no where to go fast enough.</p></blockquote><p></p>
[QUOTE="tim_w, post: 1462335, member: 11132"] Yes I know its crazy. Also I only pointing out the pressure to just nip that in the butt and not look like its apples to apples. I know some people get bent over pressure from a safety stand point and its good to have a heathly margin even in brass. But after seeing the pressures limits of cases vs barrels bolts receives in the bolt guns used here you have a healthy safe zone between a blown case and firearm going boom etc. Maybe if someone pushed the lower limits in bolt reciever barrel tenon thickness etc. The point being this is not like LM/NM cases in a rem700 and running 70K and getting lug compression/setback. For this case size to S/A receivers the hoop strength is good and bolt thrust numbers from the smaller case head not to mention the effects of the straight case wall offsetting more bolt thrust than these highly tapered cases its really an issue limited to brass. While reading brass is not a viable way to read pressure in absolute terms it does work fairly well for knowing where you are in terms of the limits of the case in that specific gun . In todays bolt actions that is really the main concern the competent hand loader has to worry about IMO. So I have no issues running higher pressures as long as the cases can handle it. But I would not want only 2 loading from a $3 case either. Then again thats up to the person with the wallet. LOL What is nice is when you can find that accuracy node just under where the cases are taking a bit too much abuse. Say 2850FPS 250 Hybrid 3.0"-3.1" COAL 25-26" barrel RL17 That sure would let this short action combo stretch things out there with some authority. BTW what does Quickload say about powder burn percentage with. this type load and barrel length? What percentage of powder is burned after adjusting powder energy to correct vel? With this bore to powder volume ratio and the pressure it has to be really good. BTW speaking of the larger calibers for this case. As vel increases for a given bullet weight as caliber increase think what vel a 250-260 .375 bullet would be maxed at if you are hitting 2900 in the 338;) Just saying. Make a nice bush gun up north or a short barrel hog gun down south. Imagine what a fast moving flat nose .375 would do driving into that shoulder plate:eek: . I have seen the kind of hydraulic damage can happen when tissue fluid has no where to go fast enough. [/QUOTE]
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My 338 Sherman Shortmag
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