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Rifles, Reloading, Optics, Equipment
Reloading
Badlands BD-2 load data
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<blockquote data-quote="cbuck516" data-source="post: 2814147" data-attributes="member: 122236"><p>Recently re-barreled my Howa 1500 specifically to accommodate the Badlands SBD2 0.257" 110gr.</p><p>I ended up getting a Howage prefit barrel from Preferred Barrel Blanks in stainless with 1-7" twist at 26" length chambered in 25-06AI</p><p>[ATTACH=full]461074[/ATTACH]</p><p></p><p>Sorry for the very long post. I assume there are other spreadsheet nerds out there like me that might have some of their questions answered by seeing my entire reloading process for this bullet.</p><p></p><p><strong>Pressure Ladder</strong></p><p>After fireforming Lapua 30-06 brass in this 25-06AI chamber I started load development with the Badlands SBD2 110gr using N565 powder.</p><p>All brass is annealed between each firing.</p><p>Below are the results of my pressure ladder test. Hoping to find a forgiving flat spot I chose to focus further testing around 60.8-61.6gr of N565. My starting COAL was 0.020" off of jam.</p><p><strong>All testing in this post is done at 100 yards</strong></p><p>[ATTACH=full]461075[/ATTACH]</p><p><strong>OCW from 60.8-61.6 in 0.2gr incremements</strong></p><p>OCW testing was shot in a round robbin fashion.</p><p>60.8-61.0 were selected as having the smallest vertical dispersion and tightest POI grouping</p><p>[ATTACH=full]461076[/ATTACH]</p><p><strong>OCW from 60.6-61.0 in 0.1gr increments</strong></p><p>OCW testing was shot in a round robbin fashion.</p><p>[ATTACH=full]461081[/ATTACH]</p><p><strong>"Cool Bore" 3-shot groups 60.8-61.0 in 0.1gr increments</strong></p><p>3-shot groups shot with 1 minute between shots in each group. Barrel cooler ran for 3 minutes between each group to allow barrel to cool down to nearly cold bore conditions. This is a hunting rifle for me so I am attempting to develop loads that shoot accurately in a cool barrel.</p><p>ES/SD data looks pretty hideous, but I was pleased to see very minimal vertical POI dispersion around the 61.0 charge. The horizontal POI dispersion was pretty wide so seating depth testing was performed next at 61.0gr</p><p>[ATTACH=full]461082[/ATTACH]</p><p><strong>Bullet Seating Test from 0.010"-0.080" off </strong></p><p>I was pleased with the seating depth around 0.010"-0.030 area and chose to do further testing in that area with 0.005" increments.</p><p>Notice that I switched from using a 0.255" to a 0.2545" mandrel from this point on. I had gotten my 0.2545" mandrel stuck in a case at one point so that is why I wasn't using it earlier.</p><p>[ATTACH=full]461083[/ATTACH]</p><p><strong>"Cool Bore" 3-shot groups Jump Test from 0.025" to 0.035" off jam</strong></p><p>Again, ES/SD is pretty hideuos, but this is 3 shots starting with a cool barrel.</p><p>I was pleased with the horizontal spread at 0.035" jump so that is the depth that will be used going forward.</p><p>This seating depth results in COAL of 3.353" and CBTO of 2.695"</p><p>It is worth noting that the lighting was really low during this test and I believe that caused the velocity shift seen in the chrono data. It's nice to have the chrono, but I don't totally trust it all the time so I use it more as a point of reference than a guide. I try to let my targets tell me what needs addressed. </p><p><strong>[ATTACH=full]461084[/ATTACH]</strong></p><p><strong>Magnum Primer Test</strong></p><p>For this test I replaced the CCI 200 used in all previous testing with the CCI 250</p><p>The overall group sizes shrank sat all charges with the load at 61.0 gr producing a sub 1/2MOA group</p><p>If you look at the first two shots in each of these groups, the ES is no greater than 5fps. The third shot in each group caused a greater ES in every case, assumingly due to the change in barrel heat over the group.</p><p><strong>[ATTACH=full]461085[/ATTACH]</strong></p><p>I have loaded up the rest of this brass at 61.0 with the CCI 250 and will test those loads at 400 yards and possibly 1000yards in the coming weeks as weather and time permits. </p><p>My goal was to have sub 3/4MOA loads which looks to be very doable with this combo and I can't wait to try this bullet on some critters this fall.</p><p>It took me 78 shots to reach the load I am at today.</p></blockquote><p></p>
[QUOTE="cbuck516, post: 2814147, member: 122236"] Recently re-barreled my Howa 1500 specifically to accommodate the Badlands SBD2 0.257" 110gr. I ended up getting a Howage prefit barrel from Preferred Barrel Blanks in stainless with 1-7" twist at 26" length chambered in 25-06AI [ATTACH type="full" alt="howa26-06ai.jpg"]461074[/ATTACH] Sorry for the very long post. I assume there are other spreadsheet nerds out there like me that might have some of their questions answered by seeing my entire reloading process for this bullet. [B]Pressure Ladder[/B] After fireforming Lapua 30-06 brass in this 25-06AI chamber I started load development with the Badlands SBD2 110gr using N565 powder. All brass is annealed between each firing. Below are the results of my pressure ladder test. Hoping to find a forgiving flat spot I chose to focus further testing around 60.8-61.6gr of N565. My starting COAL was 0.020" off of jam. [B]All testing in this post is done at 100 yards[/B] [ATTACH type="full" alt="25-06AI_SBD2_1.PNG"]461075[/ATTACH] [B]OCW from 60.8-61.6 in 0.2gr incremements[/B] OCW testing was shot in a round robbin fashion. 60.8-61.0 were selected as having the smallest vertical dispersion and tightest POI grouping [ATTACH type="full" alt="25-06AI_SBD2_2.PNG"]461076[/ATTACH] [B]OCW from 60.6-61.0 in 0.1gr increments[/B] OCW testing was shot in a round robbin fashion. [ATTACH type="full" alt="25-06AI_SBD2_3.PNG"]461081[/ATTACH] [B]"Cool Bore" 3-shot groups 60.8-61.0 in 0.1gr increments[/B] 3-shot groups shot with 1 minute between shots in each group. Barrel cooler ran for 3 minutes between each group to allow barrel to cool down to nearly cold bore conditions. This is a hunting rifle for me so I am attempting to develop loads that shoot accurately in a cool barrel. ES/SD data looks pretty hideous, but I was pleased to see very minimal vertical POI dispersion around the 61.0 charge. The horizontal POI dispersion was pretty wide so seating depth testing was performed next at 61.0gr [ATTACH type="full" alt="25-06AI_SBD2_4.PNG"]461082[/ATTACH] [B]Bullet Seating Test from 0.010"-0.080" off [/B] I was pleased with the seating depth around 0.010"-0.030 area and chose to do further testing in that area with 0.005" increments. Notice that I switched from using a 0.255" to a 0.2545" mandrel from this point on. I had gotten my 0.2545" mandrel stuck in a case at one point so that is why I wasn't using it earlier. [ATTACH type="full" alt="25-06AI_SBD2_5.PNG"]461083[/ATTACH] [B]"Cool Bore" 3-shot groups Jump Test from 0.025" to 0.035" off jam[/B] Again, ES/SD is pretty hideuos, but this is 3 shots starting with a cool barrel. I was pleased with the horizontal spread at 0.035" jump so that is the depth that will be used going forward. This seating depth results in COAL of 3.353" and CBTO of 2.695" It is worth noting that the lighting was really low during this test and I believe that caused the velocity shift seen in the chrono data. It's nice to have the chrono, but I don't totally trust it all the time so I use it more as a point of reference than a guide. I try to let my targets tell me what needs addressed. [B][ATTACH type="full" alt="25-06AI_SBD2_6.PNG"]461084[/ATTACH] Magnum Primer Test[/B] For this test I replaced the CCI 200 used in all previous testing with the CCI 250 The overall group sizes shrank sat all charges with the load at 61.0 gr producing a sub 1/2MOA group If you look at the first two shots in each of these groups, the ES is no greater than 5fps. The third shot in each group caused a greater ES in every case, assumingly due to the change in barrel heat over the group. [B][ATTACH type="full" alt="25-06AI_SBD2_7.PNG"]461085[/ATTACH][/B] I have loaded up the rest of this brass at 61.0 with the CCI 250 and will test those loads at 400 yards and possibly 1000yards in the coming weeks as weather and time permits. My goal was to have sub 3/4MOA loads which looks to be very doable with this combo and I can't wait to try this bullet on some critters this fall. It took me 78 shots to reach the load I am at today. [/QUOTE]
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Badlands BD-2 load data
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