I have a 4x12x50 i got a great deal with a standard reticle. Thinking about seeing if they will install the TDS reticle for my 7 mm STW. I am used to doing clicks but thought it would be quicker to go the TDS route. Anyone have any experience with these things? Or is it even worth it.
Swarovski ?
- Thread starter Blacktail
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bailey1474
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I doubt you'll get them to install the TDS. They discontinued it and replaced it w/the BR reticle. Got tired of paying royalties I guess.
woods
Well-Known Member
The 7STW is too flat a shooter to match up well with the TDS reticle. The TDS graduations on the reticle subtend the following on a target at 100 yards:
crosshairs
1st line down - 2.0"
2nd line down - 4.8"
3rd line down - 7.5"
4th line down - 10.5"
So with a 100 yard zero the reticle would correspond to the following trajectory:
100 yard zero
200 yards - 4"
300 yards - 14.4"
400 yards - 30"
500 yards - 52.5"
200 yard zero
300 yards - 6"
400 yards - 19.2"
500 yards - 37.5"
600 yards - 63"
That doesn't match up to most 7STW loads, for example a 160 gr Accubond with a muzzle velocity of 3100 fps would have the following trajectory:
100 yard zero
200 yards - 2.6"
300 yards - 9.8"
400 yards - 22"
500 yards - 40.3"
200 yard zero
300 yards - 5.9"
400 yards - 16.9"
500 yards - 33.8"
600 yards - 57.6"
Not too bad at 200 yard zero. If you shoot the 140 gr bullet it would get worse, the 175 gr bullet it would get closer. You would have to shoot a bullet with a ballistic coefficient closer to .400 in a 160 gr weight and use the 200 yard zero to really match a TDS.
crosshairs
1st line down - 2.0"
2nd line down - 4.8"
3rd line down - 7.5"
4th line down - 10.5"
So with a 100 yard zero the reticle would correspond to the following trajectory:
100 yard zero
200 yards - 4"
300 yards - 14.4"
400 yards - 30"
500 yards - 52.5"
200 yard zero
300 yards - 6"
400 yards - 19.2"
500 yards - 37.5"
600 yards - 63"
That doesn't match up to most 7STW loads, for example a 160 gr Accubond with a muzzle velocity of 3100 fps would have the following trajectory:
100 yard zero
200 yards - 2.6"
300 yards - 9.8"
400 yards - 22"
500 yards - 40.3"
200 yard zero
300 yards - 5.9"
400 yards - 16.9"
500 yards - 33.8"
600 yards - 57.6"
Not too bad at 200 yard zero. If you shoot the 140 gr bullet it would get worse, the 175 gr bullet it would get closer. You would have to shoot a bullet with a ballistic coefficient closer to .400 in a 160 gr weight and use the 200 yard zero to really match a TDS.
TDS works very well - i have got the standard duplex and TDS - if you go to Swarv's website and input your load data, bullet weight ,bc etc, it gives you the distances for the graduations.
Downside is the cost of changing reticles $$$$$++ I was quoted $800 New Zealand dollars wholesale
You would zero your STW at 300 wouldnt you?
Downside is the cost of changing reticles $$$$$++ I was quoted $800 New Zealand dollars wholesale
You would zero your STW at 300 wouldnt you?
Petersen
Well-Known Member
Yes you zero the 7mm STW at 300. I have a swaro TDS with the 6-18 model on it and it works very well. I have shot various loads and bullet weights and all are a 300 yard zero. I am settled in on the 162 SST right now over 75.5 H1000. The good thing about the factor for this scope is a medium load works the best. I am dead on at 300, the first line is right on at 400 (consistently wacks the 5 inch plate), at 500, 600, and 700 you have to hold on the lower third of ten inch plates and wack away. This is because the exact zero of the lines is something like 511, 618, 726 (don't remember the exact numbers but you get the idea).
I killed my antelope at 480 yards with this setup, except then I was using 150 Scirrocos.
I killed my antelope at 480 yards with this setup, except then I was using 150 Scirrocos.
