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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Velocity Increase question??
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<blockquote data-quote="Rflamm250" data-source="post: 1884382" data-attributes="member: 105493"><p>So I recently put together a 6xc with a Defiance Tenacity action, Hawkhill barrel. Did my normal break in which consists of 25 rounds and 5 cleanings. Loaded 105 hybrids .020 off, 3 each at 39, 39.3, 39.6, 40 grains H4350. Went to 400 yards as normal for my load development. Shot 3 fouler s then Starting with the lowest charge shot for groups. Every group got tighter and tighter until I reached 40 grains which shot close to 1 inch. Cleaned barrel again fouled it and shot the same charges but this time from the 40 charge down. Groups started over 2 inches and shrunk as the charge weight lowered until I reached 39 which shot around 1 inch. So basically was opposite of first go round. Loaded 3 more at 40 grains again and shot over magspeed 3028, 3055, and 3079 velocity seemed to increase 20+ fps every shot starting with cold barrel. Has any one seen this and did the barrel ever settle?</p></blockquote><p></p>
[QUOTE="Rflamm250, post: 1884382, member: 105493"] So I recently put together a 6xc with a Defiance Tenacity action, Hawkhill barrel. Did my normal break in which consists of 25 rounds and 5 cleanings. Loaded 105 hybrids .020 off, 3 each at 39, 39.3, 39.6, 40 grains H4350. Went to 400 yards as normal for my load development. Shot 3 fouler s then Starting with the lowest charge shot for groups. Every group got tighter and tighter until I reached 40 grains which shot close to 1 inch. Cleaned barrel again fouled it and shot the same charges but this time from the 40 charge down. Groups started over 2 inches and shrunk as the charge weight lowered until I reached 39 which shot around 1 inch. So basically was opposite of first go round. Loaded 3 more at 40 grains again and shot over magspeed 3028, 3055, and 3079 velocity seemed to increase 20+ fps every shot starting with cold barrel. Has any one seen this and did the barrel ever settle? [/QUOTE]
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Velocity Increase question??
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