HighUintas
WKR
- Joined
- Feb 2, 2020
- Messages
- 2,120
I completed a drop eval with my Maven RS. 1.2 scope today.
Rifle is Tikka with a factory stock free floated and vertical grip
Action screws degreased and loctited and torqued to 65-in lb
Scope rings are sports match. T084 with the screws Degreased and loctited. Rail screws torqued to 45 inch pounds and bring cap screws torqued to 25-in lb.
Cartridge is 30-284ai, basically a 30-06, shooting 185 juggernauts at about 2, 800fps.
I used 1.5 in circles for the Target.
The drop surface was probably too hard. The ground was frozen, solid dirt and rock mixture. I used a foam therm arrest sleeping pad. I completed the 18 inch drops solely on that, and after seeing how much the rifle bounced, and how hard the ground is, I put my windshield sunblocker underneath for the 36-in drops. For the first couple 36-in drops, I only had the windshield sunblocker doubled over. The rifle still bounced like crazy, so on the triple 36-in drops I doubled over the windshield sunblocker again and that seemed to help a little bit.
I first did a 30 round group to get the group size and zero. Group size is about 1.75 , possibly closer to 2 in in one dimension.
I adjusted the scope 0.1 right and 0.1 down, then shot five to confirm.
I then did the 18-in drops. Once on the left, then shot around. Once on the top, then shot around. Once on the right side, then shot around. I used the same target as the zero confirm. These were done using only my foam sleeping pad. No failure at all with the 18-in drops.
I then did the single 36-in drops. The rifle bounced like hell. The surface was probably too hard for how little padding I had. After the first drop on the left side and the subsequent shot, I decided to shoot two more before dropping again because it seemed like there could have been a shift. You can see shots two and three were a little closer to center. I then put my windshield sunblocker doubled over underneath for extra padding. The rifle still bounced pretty hard on the next two drops. I then did a drop on the top side, and a single shot, number four. Then a drop on the right side, and a single shot, number five. They look like they are all in the zeroed cone of fire based on the 30 round group, but the first shot could be on the edge or slightly out.
Drop surface for the top and right side 36-in drops
I then did the 3x36-in drops on each side with a shot after each side. For these drops, I doubled over my windshield sunblocker again for extra padding (4 layers now) and the rifle still bounced pretty well. The surface underneath is probably too hard. There is a second shot for the right side because I had a single round left.
It's possible something shifted to the right after the first couple of drops at 36 in. The edge shots are on the very edge of what would be the 30 round shot cone, but if there are no shift I would expect them to be closer to center of the target.
Next time I go out, I will shoot 5 to 10 shots without touching the scope to see where they land. Draw your own conclusions, but to me it looks like there was a slight shift to the right.
Rifle is Tikka with a factory stock free floated and vertical grip
Action screws degreased and loctited and torqued to 65-in lb
Scope rings are sports match. T084 with the screws Degreased and loctited. Rail screws torqued to 45 inch pounds and bring cap screws torqued to 25-in lb.
Cartridge is 30-284ai, basically a 30-06, shooting 185 juggernauts at about 2, 800fps.
I used 1.5 in circles for the Target.
The drop surface was probably too hard. The ground was frozen, solid dirt and rock mixture. I used a foam therm arrest sleeping pad. I completed the 18 inch drops solely on that, and after seeing how much the rifle bounced, and how hard the ground is, I put my windshield sunblocker underneath for the 36-in drops. For the first couple 36-in drops, I only had the windshield sunblocker doubled over. The rifle still bounced like crazy, so on the triple 36-in drops I doubled over the windshield sunblocker again and that seemed to help a little bit.
I first did a 30 round group to get the group size and zero. Group size is about 1.75 , possibly closer to 2 in in one dimension.
I adjusted the scope 0.1 right and 0.1 down, then shot five to confirm.
I then did the 18-in drops. Once on the left, then shot around. Once on the top, then shot around. Once on the right side, then shot around. I used the same target as the zero confirm. These were done using only my foam sleeping pad. No failure at all with the 18-in drops.
I then did the single 36-in drops. The rifle bounced like hell. The surface was probably too hard for how little padding I had. After the first drop on the left side and the subsequent shot, I decided to shoot two more before dropping again because it seemed like there could have been a shift. You can see shots two and three were a little closer to center. I then put my windshield sunblocker doubled over underneath for extra padding. The rifle still bounced pretty hard on the next two drops. I then did a drop on the top side, and a single shot, number four. Then a drop on the right side, and a single shot, number five. They look like they are all in the zeroed cone of fire based on the 30 round group, but the first shot could be on the edge or slightly out.
Drop surface for the top and right side 36-in drops
I then did the 3x36-in drops on each side with a shot after each side. For these drops, I doubled over my windshield sunblocker again for extra padding (4 layers now) and the rifle still bounced pretty well. The surface underneath is probably too hard. There is a second shot for the right side because I had a single round left.
It's possible something shifted to the right after the first couple of drops at 36 in. The edge shots are on the very edge of what would be the 30 round shot cone, but if there are no shift I would expect them to be closer to center of the target.
Next time I go out, I will shoot 5 to 10 shots without touching the scope to see where they land. Draw your own conclusions, but to me it looks like there was a slight shift to the right.