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The Basics, Starting Out
Load Development Questions.
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<blockquote data-quote="Cobra Kahn" data-source="post: 53091" data-attributes="member: 1296"><p>Samson:</p><p>No Crimping necessary. This is what I do to work up a load from scratch:</p><p>1) Start by arbitrarily selecting a bullet that fills your general needs as Gorski has advised. Arbritrarily select the type of powder your would like to work up & arbitrarily select a primer & Case.</p><p>2) I start with at least 200 identical cases (manufacture, # of times fired, ect). I then size and trim them all to uniformity in an attempt to eliminate one variable.</p><p>4) I prime 100 of the cases with the same primer, thereby eliminating a second variable.</p><p>3) I then review published load data. You will find most all published data will provide you a minimum charge and maximum charge for your cartridge, bullet weight & primer. I start with a charge at approx 1/3 of the way between min & max. & charge 50 of your primed, sized cases with the same charge, thereby eliminating a third variable.</p><p>3) I then seat seven separate strings of five cartridges varying the overall cartridge length. Maximum length should be approx. 0.020" off lands. You might want to purchase a Stoney Point Gage to accurately know this dimension. (Keep in mind that sometimes a rifle will chamber a cartridge that is too long for your magazine. If so, you have a decision whether or not you like a single shot rifle or not?)I very the depth by shortening each string by a fixed amount such as 0.005" per string.</p><p>4) You then have 35 loaded cartridges. The remaining 15 cases I load as 'Foulers' and I am not concerned with uniformity of these foulers as they are not recorded at the range anyway.</p><p>5) Next I load up my goodies and head to the range. I shoot 3 foulers then the first string of 5, clean the gun, shoot 2 foulers and the second string of 5, ect.</p><p>6) I pick the OAL and with the best five shot grouping (optimal) then repeat the loading process verying charge, working my way up from minimum to maximum.</p><p>7) After I have found the optimal OAL & charge, I very the primer types.</p><p>8) I then make suttle changes to each to fine tune the load.</p><p></p><p>Obviousely the trick is to keep all but one variable constant in an effort to find the optimal. Its a long process, but it gives you plenty of chances to shoot which is ultimately the goal.</p></blockquote><p></p>
[QUOTE="Cobra Kahn, post: 53091, member: 1296"] Samson: No Crimping necessary. This is what I do to work up a load from scratch: 1) Start by arbitrarily selecting a bullet that fills your general needs as Gorski has advised. Arbritrarily select the type of powder your would like to work up & arbitrarily select a primer & Case. 2) I start with at least 200 identical cases (manufacture, # of times fired, ect). I then size and trim them all to uniformity in an attempt to eliminate one variable. 4) I prime 100 of the cases with the same primer, thereby eliminating a second variable. 3) I then review published load data. You will find most all published data will provide you a minimum charge and maximum charge for your cartridge, bullet weight & primer. I start with a charge at approx 1/3 of the way between min & max. & charge 50 of your primed, sized cases with the same charge, thereby eliminating a third variable. 3) I then seat seven separate strings of five cartridges varying the overall cartridge length. Maximum length should be approx. 0.020" off lands. You might want to purchase a Stoney Point Gage to accurately know this dimension. (Keep in mind that sometimes a rifle will chamber a cartridge that is too long for your magazine. If so, you have a decision whether or not you like a single shot rifle or not?)I very the depth by shortening each string by a fixed amount such as 0.005" per string. 4) You then have 35 loaded cartridges. The remaining 15 cases I load as 'Foulers' and I am not concerned with uniformity of these foulers as they are not recorded at the range anyway. 5) Next I load up my goodies and head to the range. I shoot 3 foulers then the first string of 5, clean the gun, shoot 2 foulers and the second string of 5, ect. 6) I pick the OAL and with the best five shot grouping (optimal) then repeat the loading process verying charge, working my way up from minimum to maximum. 7) After I have found the optimal OAL & charge, I very the primer types. 8) I then make suttle changes to each to fine tune the load. Obviousely the trick is to keep all but one variable constant in an effort to find the optimal. Its a long process, but it gives you plenty of chances to shoot which is ultimately the goal. [/QUOTE]
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