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The Range
Rifle & Shotgun Discussion
Tikka T3 260 Load Dev
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<blockquote data-quote="Jcann" data-source="post: 2965742" data-attributes="member: 33119"><p>My experience with Berger VLD bullets is they generally like to kiss the lands and no more than one thousands jump. If I were you I would seat the bullet to the lands on initial load development. That is, if they will still fit your mag. It kind of sounds like your chamber is set up with a long throat.</p><p></p><p>I've only loaded 140gr Berger Hybrids in my sons Savage 260. Over all length of these rounds are 2.954" +/-. The reason for the +/- is because of the uneven meplat. That's why I don't like using COAL as my measurement. My cartridge base to ogive (which is the beginning of the bullet bearing surface) is 2.268". This length is kissing the lands in the savage chamber. Naturally your measurement will be different. I'm shooting 43.8 gr of H4350 with CCI BR2 primers. I'm getting 2,887fps and <0.5 MOA at 100yds.</p><p></p><p>Continue running your optimum charge weight OCW separated by 0.3 grains of powder until you come to a group of 0.5-0.75 MOA and the desired velocity ( always watching for pressure signs, heavier than normal bolt lift). After you have consistent groups you like play with bullet seating depth to see if you can tighten the group further.</p><p></p><p>Conducting an OCW can be time consuming but it's well worth it once you're able to tune a particular load to your rifle. I've tuned three different burger bullets to my 7WSM. I'm not one to experiment with different powder. For my 7WSM I shoot H4831sc for Berger 168gr Hunting VLD, H1000 for Berger 180gr Hunting VLD/VLD/Hybrid and for the 260 which I only shoot 140gr bullets I load H4350 only. Thankfully I have plenty of powder</p></blockquote><p></p>
[QUOTE="Jcann, post: 2965742, member: 33119"] My experience with Berger VLD bullets is they generally like to kiss the lands and no more than one thousands jump. If I were you I would seat the bullet to the lands on initial load development. That is, if they will still fit your mag. It kind of sounds like your chamber is set up with a long throat. I've only loaded 140gr Berger Hybrids in my sons Savage 260. Over all length of these rounds are 2.954" +/-. The reason for the +/- is because of the uneven meplat. That's why I don't like using COAL as my measurement. My cartridge base to ogive (which is the beginning of the bullet bearing surface) is 2.268". This length is kissing the lands in the savage chamber. Naturally your measurement will be different. I'm shooting 43.8 gr of H4350 with CCI BR2 primers. I'm getting 2,887fps and <0.5 MOA at 100yds. Continue running your optimum charge weight OCW separated by 0.3 grains of powder until you come to a group of 0.5-0.75 MOA and the desired velocity ( always watching for pressure signs, heavier than normal bolt lift). After you have consistent groups you like play with bullet seating depth to see if you can tighten the group further. Conducting an OCW can be time consuming but it's well worth it once you're able to tune a particular load to your rifle. I've tuned three different burger bullets to my 7WSM. I'm not one to experiment with different powder. For my 7WSM I shoot H4831sc for Berger 168gr Hunting VLD, H1000 for Berger 180gr Hunting VLD/VLD/Hybrid and for the 260 which I only shoot 140gr bullets I load H4350 only. Thankfully I have plenty of powder [/QUOTE]
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