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Long Range Hunting & Shooting
advice on dialing in a load
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<blockquote data-quote="kcebcj" data-source="post: 827523" data-attributes="member: 10391"><p>There are some fellas here that are more capable then I in telling what are the best steps but this is what I do and it works pretty good for me. All shots through a chronograph I find the max load of whatever powder I have chosen with the bullet of choice setting .010 off the lands or just so it will fit the mag box whichever. I back off the powder a little staying somewhere near the velocity I want once I understand the max load. If you can find your load in a manual then use that max load but work up to it with your rifle.</p><p> </p><p> To find a seating depth I always work away from the lands never towards as moving the bullet towards the lands increases pressure and could get spooky if at a max load.</p><p> </p><p> I start wherever as described above and back off using .010 steps loading 3 loads at each depth. I usually find a spot somewhere where the groups tighten up or it could be right at the start. For a hunting rifle I don't think it's a good idea to have the bullet in the lands. Once I see that and am satisfied that is a good depth then I load 3 loads at .005 up and down from wherever I am in each direction unless the best group was at .010 off. Most of this is done at 100 yards but as things tighten up I think I have something good I move out to my 330 yard target. I'm happy with a load that is consistent at 1/2 MOA.</p><p> </p><p> This only works if your shooting skills and the mechanics of the rifle are at a point where you can read the groups knowing it's the load not your skill or mediocre rifle that makes them change. If the barrel is broke in don't clean it. A fouled barrel will shoot better so clean the barrel then foul it with at least 3 shots then shoot all the groups. You can get really anal here but I shoot each group cooling the barrel between groups making sure I do each group the same. Don't let your loads set on the bench in the sun that will really screw you up.</p><p> </p><p> I'm sure someone else with more info will give you a hand...good luck</p></blockquote><p></p>
[QUOTE="kcebcj, post: 827523, member: 10391"] There are some fellas here that are more capable then I in telling what are the best steps but this is what I do and it works pretty good for me. All shots through a chronograph I find the max load of whatever powder I have chosen with the bullet of choice setting .010 off the lands or just so it will fit the mag box whichever. I back off the powder a little staying somewhere near the velocity I want once I understand the max load. If you can find your load in a manual then use that max load but work up to it with your rifle. To find a seating depth I always work away from the lands never towards as moving the bullet towards the lands increases pressure and could get spooky if at a max load. I start wherever as described above and back off using .010 steps loading 3 loads at each depth. I usually find a spot somewhere where the groups tighten up or it could be right at the start. For a hunting rifle I don't think it's a good idea to have the bullet in the lands. Once I see that and am satisfied that is a good depth then I load 3 loads at .005 up and down from wherever I am in each direction unless the best group was at .010 off. Most of this is done at 100 yards but as things tighten up I think I have something good I move out to my 330 yard target. I'm happy with a load that is consistent at 1/2 MOA. This only works if your shooting skills and the mechanics of the rifle are at a point where you can read the groups knowing it's the load not your skill or mediocre rifle that makes them change. If the barrel is broke in don't clean it. A fouled barrel will shoot better so clean the barrel then foul it with at least 3 shots then shoot all the groups. You can get really anal here but I shoot each group cooling the barrel between groups making sure I do each group the same. Don't let your loads set on the bench in the sun that will really screw you up. I'm sure someone else with more info will give you a hand...good luck [/QUOTE]
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advice on dialing in a load
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