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Barnes TSX bullets
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<blockquote data-quote="rbTanzan" data-source="post: 1924028" data-attributes="member: 53978"><p>Yes you might expect more out of the little 308, even with a 20" barrel. Varget is a great powder although loads will be compressed. Our 22" 308 gets 2750 with 168gn TTSX and45.5 grains Varget (Lapua and Starline cases). Maybe our Kimber is what is called a fast barrel. Start at 43-44 grains and work up. I switch to TSX for 180 grain loads because of the small capacity of the 308. (Our gets 2700fps with 44gnVarget, expect 2550-2650 with 20".) But for deer hunting I wouldn't use over 150grains. A 130gn TTSX at 3000fps would work great. A 150gnTTSX should do about 2800fps in a 20inch barel with 46-47 grains Varget. Check all the Barnes editions, especially 4th and 5th, and Hodgdon. I've attached 4 and 5. Barnes Version 4(rev) gives capacity percentages so you can estimate the amount of compression you may be facing. Up to 105% is usually doable. You will note wide disparities like the 2010 data going up to 52grains Varget with 130gnTSX but the 2019 stopping at 49.2grain. We like 49.5. In general, I like to pull back from anything over 2800ft-pound energy in the 308 (read 2700ft# for 20" barrel), even if primers, extraction, casehead seem OK. Our loads above are anomalies (fast barrel?, but verified over multi chronos) and I would be happy with anything 100fps slower if accurate.</p></blockquote><p></p>
[QUOTE="rbTanzan, post: 1924028, member: 53978"] Yes you might expect more out of the little 308, even with a 20" barrel. Varget is a great powder although loads will be compressed. Our 22" 308 gets 2750 with 168gn TTSX and45.5 grains Varget (Lapua and Starline cases). Maybe our Kimber is what is called a fast barrel. Start at 43-44 grains and work up. I switch to TSX for 180 grain loads because of the small capacity of the 308. (Our gets 2700fps with 44gnVarget, expect 2550-2650 with 20".) But for deer hunting I wouldn't use over 150grains. A 130gn TTSX at 3000fps would work great. A 150gnTTSX should do about 2800fps in a 20inch barel with 46-47 grains Varget. Check all the Barnes editions, especially 4th and 5th, and Hodgdon. I've attached 4 and 5. Barnes Version 4(rev) gives capacity percentages so you can estimate the amount of compression you may be facing. Up to 105% is usually doable. You will note wide disparities like the 2010 data going up to 52grains Varget with 130gnTSX but the 2019 stopping at 49.2grain. We like 49.5. In general, I like to pull back from anything over 2800ft-pound energy in the 308 (read 2700ft# for 20" barrel), even if primers, extraction, casehead seem OK. Our loads above are anomalies (fast barrel?, but verified over multi chronos) and I would be happy with anything 100fps slower if accurate. [/QUOTE]
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