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Campfire 'Bwana
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Tanner I didn't read this whole thread...but is your scope mounted in medium or low rings? Did this factor into the data you entered? I don't really know if it should or not...
Last edited by BobinNH; 01/22/12.
The 280 Remington is overbore.
The 7 Rem Mag is over bore.
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Medium, but I don't think it'd make such a massive difference as 3 MOA. and I don't see anywhere in the app to enter sight height, which I thought about as well. Welcome to LR shooting, I guess
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Campfire 'Bwana
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Have to ask the expert turret twisters if it would matter....but I bet it does, and the further away you are, the more it would matter. Affects height of your line of sight above the center of bore.Could be why the data did not jive for you, first couple of shots.
The 280 Remington is overbore.
The 7 Rem Mag is over bore.
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Ahh I checked it and it was right on. I think perhaps my voodoo is a little off but I did get a chance to see how difficult calling wind is yesterday. That's how I knew my voodoo was definitely off.
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You need to chrony your load EXACTLY.....it will not only tell you the speed but standard deviation, so you know if it is a good long range load or not
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Good day today! Got my Retumbo load clocked. average of 3025 fps, out of my 24 inch tube. I'm ecstatic about this speed, but I hadn't been really satisfied on how it grouped. I told myself I wasn't gonna worry about shooting at 100 yards anymore, but I decided to check my zero and shoot one last group. I was pleasantly suprised! Not a one holer like you guys shoot, but I'm very happy with it. So I went to another spot, and set up at about 610 yards. The wind up at 7350 was HOWLING, full value from my left to right. Most of my shots were using inbetween the first and second mil-dot for wind, and almost all of my misses were still right. But, I did sneak in about 5 hits, after the wind stopped kicking my azz. I ended up needing 9 MOA up at 610. Again, not a SubMOA barn burner like some of you guys shoot, but for my first time at 600 and with the winds like that, I'm stoked! This stuff is FUN!
Last edited by TannerGun; 01/22/12.
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You're hooked
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D0000d... this is bad I'm gonna spend all my money on powder and bullets now. Shot every day for the last 5.
I'm seeing 9 MOA at 600+-... despite a mildly fast load and it's a bit (.7) less than Shooter was telling me I needed, but I guess that's just how it goes?
I adjusted the speed/BC on a JBM table to match up with 9 MOA at that range- safe to say that the rest of the card should match up pretty close?
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I would try at least 2 different distances to confirm drop data, but more is better. More data always leads to more precise info (assuming it's good data!). It's like trying to align a straight line in geometry. Pretty hard to get a line perfectly straight if you have only one point to go through. If you have two points of reference, it's much easier to make a straight line that goes through both points.
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Next investment: Good rangefinder. Thinking 610 was a good distance, but it'll start to get iffy the further back I go. I think maybe I'll be able to use Google Earth also?
Considering talking my pops into going halfsies on a Bushnell Fusion with me.
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Yeah, GE or a good GPS would work just fine if you know exactly where you're shooting to and from while you're sitting in front of a computer. Of course, the GE resolution varies with location, so your shooting area would have to appear with good res. If they are all like the one I got, you won't be disappointed by the Fusion What are you using right now?
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An old Leupold Rx-somethin. It's pop's bow hunting ranger.
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Tanner That is some great speed with retumbo. Glad it worked out for you. Typical height for leupold medium rings and leupold bases is about 1.5" to center of bore so Id check that on your input. Also I highly recommend a scope level for shooting longer range. Its cheap and a great tool.
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805, I was suprised with the speed, and I'm very happy. I'm using a pic rail and Burris Signature rings so my sight height is a bit taller.
The last group I shot also suprised me, as it hadn't been shooting lights out. Still not bugholes, but fine for my standards!
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Congrats on a fine shooting rig and thanks for posting. Sounds like your having fun!
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Thanks Kaleb. I'm glad it finally turned itself into a shooter, or rather I turned myself into a little better shooter I guess!
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Campfire Ranger
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Campfire Ranger
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Dude you're rockin'! That is awesome! I'm saving for a set of 10x Fusions right now... There was a great article in a recent issue of Precision Shooting Mag by a custom rifle builder & LR shooting teacher suggesting people do exactly what you're doing rather than rushing right out and dropping a phat dime on a custom. By the time you burn this barrel out you'll have graduated college and need to buy yourself a present to celebrate, and more importantly you'll have the skill to take full advantage of more range!
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Dood by the time this barrel is toasted it'll be March. I've shot like 130 AMAXes already... Too dang fun. I'm stoked with the way it all sorta came together.
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Good day today! Got my Retumbo load clocked. average of 3025 fps, out of my 24 inch tube. I'm ecstatic about this speed, but I hadn't been really satisfied on how it grouped. I told myself I wasn't gonna worry about shooting at 100 yards anymore, but I decided to check my zero and shoot one last group. I was pleasantly suprised! Not a one holer like you guys shoot, but I'm very happy with it. Tanner, You don't see that many one hole groups do you? That's a great group. All of the rounds are "in" the group; it's not two touching with a flier. You could draw a circle around the group and all of the holes would be close to the same distance from the exterior of the circle. A nice round group.
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I've personally never shot a 1 hole group, so yeah I'm perfectly content with nice tight little triangles most of my rifles seem to keep that shape.
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