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Rifles, Reloading, Optics, Equipment
Reloading
How much will burn?
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<blockquote data-quote="edge" data-source="post: 112043" data-attributes="member: 5030"><p>Are there any reasonably accurate ways to determine how much powder will burn in a certain barrel length?</p><p></p><p>Here is my situation:</p><p></p><p>I made a smokeless muzzleloader out of a Savage 110 action and added a #7 .458 barrel with a breechplug that uses a 45 acp case for the primer.</p><p></p><p>I am trying to work up a load for a 150 grain 30 cal SMK/Accubond/SST/A-Max</p><p>The sabot weighs 42 grains bringing the total weight to 192 grains.</p><p></p><p>My main problem is with choice of powders. </p><p></p><p>1) I need a stick powder so that it does not fall through the hole in the breechplug;</p><p></p><p>2) the bullet/sabot offers VERY little initial resistance;</p><p></p><p>3) 22 1/2 inches of usable barrel length, this INCLUDES the powder area;</p><p></p><p>4) I would prefer to not duplex powder. It has worked well but if one powder will work I prefer that.</p><p></p><p>5) 50,000 psi working load would be preferred (55k max)</p><p></p><p>Now the problem:</p><p></p><p>When I get a powder to a meaningful load the muzzle blast becomes excessive and the accuracy goes to heck ( presumably due to not burning the powder soon enough).</p><p></p><p>60+ grains of H4198 is about max</p><p>65 grains of N120 the same( I thought that this should be a good range of powder).</p><p></p><p>N110 was still good @ 60 grains but I ran out of time.</p><p></p><p>So my real question is, do I just proceed by trail and error in figuring if a powder will burn completely in this short tube?</p><p></p><p>Any help will be greatly appreciated.</p><p></p><p>edge.</p></blockquote><p></p>
[QUOTE="edge, post: 112043, member: 5030"] Are there any reasonably accurate ways to determine how much powder will burn in a certain barrel length? Here is my situation: I made a smokeless muzzleloader out of a Savage 110 action and added a #7 .458 barrel with a breechplug that uses a 45 acp case for the primer. I am trying to work up a load for a 150 grain 30 cal SMK/Accubond/SST/A-Max The sabot weighs 42 grains bringing the total weight to 192 grains. My main problem is with choice of powders. 1) I need a stick powder so that it does not fall through the hole in the breechplug; 2) the bullet/sabot offers VERY little initial resistance; 3) 22 1/2 inches of usable barrel length, this INCLUDES the powder area; 4) I would prefer to not duplex powder. It has worked well but if one powder will work I prefer that. 5) 50,000 psi working load would be preferred (55k max) Now the problem: When I get a powder to a meaningful load the muzzle blast becomes excessive and the accuracy goes to heck ( presumably due to not burning the powder soon enough). 60+ grains of H4198 is about max 65 grains of N120 the same( I thought that this should be a good range of powder). N110 was still good @ 60 grains but I ran out of time. So my real question is, do I just proceed by trail and error in figuring if a powder will burn completely in this short tube? Any help will be greatly appreciated. edge. [/QUOTE]
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Reloading
How much will burn?
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