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Rifles, Reloading, Optics, Equipment
Reloading
Group Pattern Question
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<blockquote data-quote="dashender7" data-source="post: 2323109" data-attributes="member: 120345"><p>I have seen the double grouping on some other loads yes. I could see my action screws being too tight as I did remove the stock to adjust the trigger. I will check torque specs. </p><p></p><p></p><p>So many good suggestions here I'm going to go through it and use it like a checklist thank you. I am using a ProChrono so no Magnetospeed or chrono connected to barrel. Flyer seems to be shot 3 of a string. Off to the right yes.</p><p></p><p></p><p>Yes I will see if I can confirm with a different rifle and a different stock is not out of the question as I think there are more options for these Weatherby rifles these days.</p><p></p><p></p><p>Your points about the assumed pressure signs are well taken. I can recall reading similar things elsewhere so bumping powder up slightly and slowly is one of the things I may try. Good point about higher pressure should correlate with higher velocity, that seems to make sense. Completely agree the fps I'm getting seems a good bit slower than expected. Any sense of how accurate a ProChrono is or whether it reads slow? I will also pay more attention to bolt lift - I have been forgetting to note that as an indicator of pressure. Thank you for all of the great thoughts.</p><p></p><p></p><p>I do agree with the logic here in terms of feeling like such a relatively small fps difference alone shouldn't show up at 100 yds unless something else were connected with the fps difference. The group I'm seeing is with about a 12 ES. The barrel now has about 140 round on it and the pictured group was one of the last couple I shot.</p><p></p><p></p><p>I was quick to blame myself the first time I saw this group pattern and sequence with this charge in spite of the fact that the flyer shot felt perfect breaking off but when I confirmed it a second time including pattern and sequence that gave me great pause as normally I can call even a slight pull. I'd actually prefer to believe it was just me pulling a shot. Lots of suggestions here including having my buddy shoot a group for me with it which could always still confirm you're right! Also I appreciate your perspective on the cold barrel there's some logic to it for sure.</p><p></p><p></p><p>Yes got it thank you. I do think seating depth is worth trying here I want to say it is right near top of my list after I double check all of my torques and shooting mechanics.</p></blockquote><p></p>
[QUOTE="dashender7, post: 2323109, member: 120345"] I have seen the double grouping on some other loads yes. I could see my action screws being too tight as I did remove the stock to adjust the trigger. I will check torque specs. So many good suggestions here I'm going to go through it and use it like a checklist thank you. I am using a ProChrono so no Magnetospeed or chrono connected to barrel. Flyer seems to be shot 3 of a string. Off to the right yes. Yes I will see if I can confirm with a different rifle and a different stock is not out of the question as I think there are more options for these Weatherby rifles these days. Your points about the assumed pressure signs are well taken. I can recall reading similar things elsewhere so bumping powder up slightly and slowly is one of the things I may try. Good point about higher pressure should correlate with higher velocity, that seems to make sense. Completely agree the fps I'm getting seems a good bit slower than expected. Any sense of how accurate a ProChrono is or whether it reads slow? I will also pay more attention to bolt lift - I have been forgetting to note that as an indicator of pressure. Thank you for all of the great thoughts. I do agree with the logic here in terms of feeling like such a relatively small fps difference alone shouldn't show up at 100 yds unless something else were connected with the fps difference. The group I'm seeing is with about a 12 ES. The barrel now has about 140 round on it and the pictured group was one of the last couple I shot. I was quick to blame myself the first time I saw this group pattern and sequence with this charge in spite of the fact that the flyer shot felt perfect breaking off but when I confirmed it a second time including pattern and sequence that gave me great pause as normally I can call even a slight pull. I'd actually prefer to believe it was just me pulling a shot. Lots of suggestions here including having my buddy shoot a group for me with it which could always still confirm you're right! Also I appreciate your perspective on the cold barrel there's some logic to it for sure. Yes got it thank you. I do think seating depth is worth trying here I want to say it is right near top of my list after I double check all of my torques and shooting mechanics. [/QUOTE]
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