does this sound ok.

WhelanLad

WhelanLad

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I sighted in some rifles today.

Heres where they are sitting now..at 100m, an where charts say should be at 200 an 300
......................................... 200 ........ 300
270win- 2inch high ........... +1 ........ -5
300wsm - 1.5inch high ....... 0-/+ ............ -7
35whelen- 2 inch high. ..... -1.5 ......... -12



Should be sweet, your thoughts?


thinkin of throwin the 300 up to around 2-2.5 inch for longer ranges
 
also some real world comparisions.

In recoil, the Remington 700 SPS .270 was the most comfy to shoot...
2nd was the Ruger Hawkeye 35 Whelen (woodstocked) 225gr was very close in felt recoil, only a bees Dck more.

Lastly, Browning a bolt 300wsm.... Booted like a mule compared to the above.

Alot more velocity an energy at both ends.. not my cup of tea.
 
100% correct. just nice to know its within the ball park, i really couldnt give a #### about on paper sort of stuff, but if you ask a Question about which gun or 7 V 30 etc etc all you hear is Chart talk.

ah nevermind.

woo
 
Provided you are familiar with the near range trajectory as well as the far, and provided the zero is appropriate for your purposes all is good. My scoped rifles are typically zeroed for 200, except for the .458 which is zeroed for 150, and under most circumstances when the range exceeds 250 yards I have to hold a mite high or make an elevation adjustment to allow for the drop. From the muzzle to the zero range, trajectory is typically quite flat, but beyond the zero range the trajectory tends to be steep, even with so called flat shooting rounds.
 
WhelanLad said:
I sighted in some rifles today.

Heres where they are sitting now..at 100m, an where charts say should be at 200 an 300
......................................... 200 ........ 300
270win- 2inch high ........... +1 ........ -5
300wsm - 1.5inch high ....... 0-/+ ............ -7
35whelen- 2 inch high. ..... -1.5 ......... -12



Should be sweet, your thoughts?
Click to expand...

This has been standard sighting with high power rifles for 100 years, ever since the 30-06 came on the market.
The 270 Winchester, coming on the market in 1925, has virtually always been sighted that way, plus or minus an inch at 100 yards.
 
WhelanLad said:
Lastly, Browning a bolt 300wsm.... Booted like a mule compared to the above.

Alot more velocity an energy at both ends.. not my cup of tea.
Click to expand...

For 300 yards or less I'd take a .35 Whelen over a .300 wsm any day of the week.
 
I agree that charts don't always replicate reality, but ballistic calculator and programs are getting better and better all the time. They're at the point now, where they are rarely off by more than an inch, or so, at 500-600 yards for most of the guns I shoot.

You have to remember to input each variable and data point accurately in order to get an accurate data output. Garbage in equals garbage out, as the accountants always say ;)
 
The trouble isn't with the math, its with accumulated errors and giveing them room to magnify.

When you sight a rifle at 200 yards, then try it at 300 its an increase of 50% in range.

Sight the same rifle at 100, then lob them out to 300 and its a 300% increase in distance. There's a big difference between 50% and 300%. Which do you think will bite you on the ass more often?;)
 
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The only way to find out what the "real" drop figures are is to shoot the load at the different ranges to verify.
You get some real surprises sometimes.
I had a 26" 7mm STW that started the 140 at just over 3500 fps.
Sighted 3" high at 100, the chart said it should be down 20-21" at 500.
On several different occasions I shot groups at 500 with this rifle.
Groups seldom exceeded 4", so it was easy to find the center of the group.
The average real drop at 500 with the +3 at 100 setting was only 15-16"
Quite a bit flatter than charts said it should be.
I have seen the opposite scenario also, so you have to shoot your rifle and load to have an accurate drop chart at your disposal.
Regards, Eagleye.
 
I find that in order to get an accurate output, you have to enter in your actual zero range, not just enter in where the bullet impacts at 100 yards. As Dogleg said, there is too much error involved with that method.
 
WhelanLad said:
I sighted in some rifles today.

Heres where they are sitting now..at 100m, an where charts say should be at 200 an 300
......................................... 200 ........ 300
270win- 2inch high ........... +1 ........ -5
300wsm - 1.5inch high ....... 0-/+ ............ -7
35whelen- 2 inch high. ..... -1.5 ......... -12



Should be sweet, your thoughts?
Click to expand...

That is EXACTLY how you do it to get started. It has been done that way since Buck was a pup. I have shot vermin to 500yds successfully doing very similar to what you did.

And will be close enough unless you are trying to shoot a field mouse @300M.

Now, next time you are at the range, confirm your trajectories/impact points are the same as your charts previously indicated and make adjustments if needed.

After you have the "straight skinny" on your flight characteristics and impact, you can holdover or dial up as needed to hit that field mouse.

Regardless of how far he is.
 
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