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Rifles, Reloading, Optics, Equipment
Reloading
Primers: Std. vs. Magnum
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<blockquote data-quote="Rich Coyle" data-source="post: 1934175" data-attributes="member: 70559"><p>Savage 26" heavy barrel .223</p><p></p><p></p><p></p><p>Here are some loads with Varget and JLK 65 grain VLD's and different primers.</p><p></p><p>The powder charge of 27.5 grains usually produced velocities in the low 3200s in this 26" heavy barrel Savage .223. The primers used are as follows: Federal 205 and 205 M, Remington 7 1/2 Bench Rests, CCI BR 4 and 450 magnum and Winchester WSR. All groups used five shots at 100 yards.</p><p></p><p><strong>Federal's 205</strong> made three groups. They measured .519" @ 3220 fps, .962" @ 3224 and 1.216" @ 3210". The 1.216" group had a couple of fliers. They averaged .<strong>899</strong>" @ 3218 fps.</p><p></p><p>The <strong>205 M from Federal</strong> is a match primer. There are records for four groups. They show groups of .709" @ 3224 fps, .726" @ 3224 fps, .644" @ 3224 fps, .757" @ 3227 fps. Their four group average was .<strong>709</strong>" @ 3225 fps. This primer produced the most consistent velocities that I have seen in any firearm.</p><p>Consistent velocities did not translate into the best accuracy, though.</p><p></p><p>The four <strong>Remington 7 1/2 Bench Rest</strong> primer's groups measured .744" @ 3211 fps, .682" @ 3211 fps, .676" @ 3224 fps and .682" 3223 fps and averaged .<strong>696</strong>" @ 3217 fps.</p><p></p><p><strong>Winchester's WSR</strong> primers worked as follows: .582" @ 3220 fps, .399" @ 3249 fps, .830" @ 3219 fps and .812" @ 3219 fps. The average for WSR is .<strong>656</strong>" @ 3227 fps. All of the WSR primers were pierced by the firing pin.</p><p></p><p>The next primer is the <strong>CCI 450 magnum</strong>. It produced .684" @ 3200 fps, .546" @ 3207 fps, .711" @ 3234 fps, .544" @ 3219 fps, .806" @ 3191 fps and .525" @ 3218 fps. The average for the magnum primer was .<strong>636</strong>" @ 3211 fps.</p><p></p><p>The last one tried was another bench rest primer. It is the<strong> BR 4</strong>. We saved the best for last. The groups measured .492" @ 3245 fps, .477" @ 3250 fps, .441" @ 3245 fps, .452" @ 3232 and .460" @ 3229 fps. Its phenomenal five groups average is .<strong>464</strong>" @ 3240 fps. It also produced the highest velocities.</p><p></p><p>With the same rifle using the same powder firing the same bullets groups with the "best" primer are half the size of the worst groups.</p><p></p><p>When I tried the 52 grain JLK's I tried only two primers: the <strong>Remington match</strong> and the <strong>standard CCI</strong>. After eight groups of five shots with each primer the standard primer's groups were about <strong>3/16</strong>" smaller on the average than the match primers.</p></blockquote><p></p>
[QUOTE="Rich Coyle, post: 1934175, member: 70559"] Savage 26” heavy barrel .223 Here are some loads with Varget and JLK 65 grain VLD's and different primers. The powder charge of 27.5 grains usually produced velocities in the low 3200s in this 26" heavy barrel Savage .223. The primers used are as follows: Federal 205 and 205 M, Remington 7 1/2 Bench Rests, CCI BR 4 and 450 magnum and Winchester WSR. All groups used five shots at 100 yards. [B]Federal's 205[/B] made three groups. They measured .519" @ 3220 fps, .962" @ 3224 and 1.216" @ 3210". The 1.216" group had a couple of fliers. They averaged .[B]899[/B]" @ 3218 fps. The [B]205 M from Federal[/B] is a match primer. There are records for four groups. They show groups of .709" @ 3224 fps, .726" @ 3224 fps, .644" @ 3224 fps, .757" @ 3227 fps. Their four group average was .[B]709[/B]" @ 3225 fps. This primer produced the most consistent velocities that I have seen in any firearm. Consistent velocities did not translate into the best accuracy, though. The four [B]Remington 7 1/2 Bench Rest[/B] primer's groups measured .744" @ 3211 fps, .682" @ 3211 fps, .676" @ 3224 fps and .682" 3223 fps and averaged .[B]696[/B]" @ 3217 fps. [B]Winchester's WSR[/B] primers worked as follows: .582" @ 3220 fps, .399" @ 3249 fps, .830" @ 3219 fps and .812" @ 3219 fps. The average for WSR is .[B]656[/B]" @ 3227 fps. All of the WSR primers were pierced by the firing pin. The next primer is the [B]CCI 450 magnum[/B]. It produced .684" @ 3200 fps, .546" @ 3207 fps, .711" @ 3234 fps, .544" @ 3219 fps, .806" @ 3191 fps and .525" @ 3218 fps. The average for the magnum primer was .[B]636[/B]" @ 3211 fps. The last one tried was another bench rest primer. It is the[B] BR 4[/B]. We saved the best for last. The groups measured .492" @ 3245 fps, .477" @ 3250 fps, .441" @ 3245 fps, .452" @ 3232 and .460" @ 3229 fps. Its phenomenal five groups average is .[B]464[/B]" @ 3240 fps. It also produced the highest velocities. With the same rifle using the same powder firing the same bullets groups with the "best" primer are half the size of the worst groups. When I tried the 52 grain JLK's I tried only two primers: the [B]Remington match[/B] and the [B]standard CCI[/B]. After eight groups of five shots with each primer the standard primer's groups were about [B]3/16[/B]" smaller on the average than the match primers. [/QUOTE]
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Primers: Std. vs. Magnum
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