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Long Range Hunting & Shooting
Is a scope level needed?
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<blockquote data-quote="Unofficial Gun Addict (UGA)" data-source="post: 1013040" data-attributes="member: 81139"><p>CBS... Out of curiosity, I decided to see if what you are saying matches up with my field experience by examining my first sighting in of my tikka t3 tactical out to 600 yards. The gun had already been sighted both at 100 and 200 yards, a velocity average was put into my dope solution and I was verifying dope out to 600 as this is the actual maximum distance I wanted to be shooting.</p><p></p><p>My horizontal zero was dead on at both 100 & 200 and I was working with these first 6 shots to see where I was vertically, so I could sort out my elevation dope at 600. Spin drift was disabled in my android version of Shooter. This summer when I started working up these loads, I, like you, didn't think that spin drift would have any meaningful effect on my shots out to 600 yards. I was using a 168 VLD Hunting bullets, over 42.8 gr of Varget, muzzle velocity estimated at 2540fps.</p><p></p><p>If you look at the target attached, you'll see that my shots group around 2.5" to the right of center. Barrel is a right 1in11. Spin drift at 600 yards with this setup actually accounts for 2.2" shift right. So without a level, and just squaring up the reticle by eye... It appears that cant isn't an issue. The shift right was due to spin drift and had I taken this into account for my dope, these shots would have grouped vertically center, albeit, about 7" low. I must admit I was on a fairly flat surface shooting at a hill in the distance, so if I was on uneven terrain, perhaps I might find cant creeping into the works, but as I said before... it just doesn't seem that challenging to true up my scope by eye at least out to 600. I'll find out if I experience issues as distance increases as I'm intending to get some 215 hybrids worked up for my 300wm to shoot out to 1k. Something that I'll definitely keep my eye on now that this has been brought up...</p><p></p><p>...and yes, pun absolutely intended!<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p><p></p><p>[ATTACH]40875[/ATTACH]</p></blockquote><p></p>
[QUOTE="Unofficial Gun Addict (UGA), post: 1013040, member: 81139"] CBS... Out of curiosity, I decided to see if what you are saying matches up with my field experience by examining my first sighting in of my tikka t3 tactical out to 600 yards. The gun had already been sighted both at 100 and 200 yards, a velocity average was put into my dope solution and I was verifying dope out to 600 as this is the actual maximum distance I wanted to be shooting. My horizontal zero was dead on at both 100 & 200 and I was working with these first 6 shots to see where I was vertically, so I could sort out my elevation dope at 600. Spin drift was disabled in my android version of Shooter. This summer when I started working up these loads, I, like you, didn't think that spin drift would have any meaningful effect on my shots out to 600 yards. I was using a 168 VLD Hunting bullets, over 42.8 gr of Varget, muzzle velocity estimated at 2540fps. If you look at the target attached, you'll see that my shots group around 2.5" to the right of center. Barrel is a right 1in11. Spin drift at 600 yards with this setup actually accounts for 2.2" shift right. So without a level, and just squaring up the reticle by eye... It appears that cant isn't an issue. The shift right was due to spin drift and had I taken this into account for my dope, these shots would have grouped vertically center, albeit, about 7" low. I must admit I was on a fairly flat surface shooting at a hill in the distance, so if I was on uneven terrain, perhaps I might find cant creeping into the works, but as I said before... it just doesn't seem that challenging to true up my scope by eye at least out to 600. I'll find out if I experience issues as distance increases as I'm intending to get some 215 hybrids worked up for my 300wm to shoot out to 1k. Something that I'll definitely keep my eye on now that this has been brought up... ...and yes, pun absolutely intended!:D [ATTACH]40875.vB[/ATTACH] [/QUOTE]
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