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Rifles, Reloading, Optics, Equipment
Reloading
300 wm 10 twist - which hammer hunter
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<blockquote data-quote="JTH" data-source="post: 2016197" data-attributes="member: 59647"><p>Ok, posting the results of my first attempt at reloading. All of this was with new Peterson brass in 300 Win Mag Long. Powder is H4350. Primers were CCI (incidentally, I had 2 primer failures out of 40 rounds fired today). Bullet is the 178 grain Absolute Hammer. Started at 70 grains, worked up to 76 grains In 0.5 grain increments. Seated bullets to @3.600 coal, all rounds crimped with the Lee crimping die. The rifle has a 24" barrel and a suppressor. Here's some of the data:</p><p></p><p>70 grains high 3016, low 3003, avg 3009, sd 6, es 13</p><p></p><p>72 grains high 3100, low 3086, avg 3093, sd 7, es 14. This produced a 3 shot group of 0.46 @ 100 yards</p><p></p><p>74.5 grains high 3228, low 3220, avg 3225, sd 4, es 8. This also produced a 0.46 group</p><p></p><p>76 grains high 3284, low 3276, avg 3281, sd 4, es 8. This group was 0.613.</p><p></p><p>No signs of pressure, bolt lift was normal, case and primers all look fine.</p><p></p><p>I'm hooked. Really appreciate all of the help getting me to this point. It's hard to believe I'm getting this kind of velocity out of a 300 win mag and 178 grain bullets. </p><p></p><p>Any suggestions on where to go from here to dial in for accuracy? </p><p></p><p>If I switch to Federal primers (or another brand, to gain reliability) will I see a noticeable change to the numbers above? Would I need to drop back down and work my way up to max load again?</p></blockquote><p></p>
[QUOTE="JTH, post: 2016197, member: 59647"] Ok, posting the results of my first attempt at reloading. All of this was with new Peterson brass in 300 Win Mag Long. Powder is H4350. Primers were CCI (incidentally, I had 2 primer failures out of 40 rounds fired today). Bullet is the 178 grain Absolute Hammer. Started at 70 grains, worked up to 76 grains In 0.5 grain increments. Seated bullets to @3.600 coal, all rounds crimped with the Lee crimping die. The rifle has a 24” barrel and a suppressor. Here’s some of the data: 70 grains high 3016, low 3003, avg 3009, sd 6, es 13 72 grains high 3100, low 3086, avg 3093, sd 7, es 14. This produced a 3 shot group of 0.46 @ 100 yards 74.5 grains high 3228, low 3220, avg 3225, sd 4, es 8. This also produced a 0.46 group 76 grains high 3284, low 3276, avg 3281, sd 4, es 8. This group was 0.613. No signs of pressure, bolt lift was normal, case and primers all look fine. I’m hooked. Really appreciate all of the help getting me to this point. It’s hard to believe I’m getting this kind of velocity out of a 300 win mag and 178 grain bullets. Any suggestions on where to go from here to dial in for accuracy? If I switch to Federal primers (or another brand, to gain reliability) will I see a noticeable change to the numbers above? Would I need to drop back down and work my way up to max load again? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
300 wm 10 twist - which hammer hunter
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