GTA
PCP - HPA - C02 Gate => PCP DarkSiders Forum => : DougT May 06, 2010, 04:40:50 PM
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I'm tweaking my 850's regulator to get a little more velocity and then I'll test 14 types of pellets this weekend. I'll do a 5-shot group of each type, take a break and then test them all again with another 5-shot group. Most of the shooting I do is 20-60 yards at starlings, pigeons and ground squirrels. I'll occasionally take shots at further distances. I'm torn between testing all the pellets at 30 or 50 yards. I understand that a pellet that groups well at 30 yards doesn't necessarily group well at 50 yards but not the opposite.
What do you guys test your pellets at?
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Generally a new pcp, I will start off with a new scope and mounts and set the target at 30 yards. If for some reason I cannot hit the target paper then I will move the target into 15 to 20 yards. I have found that some springers need the shorter yardage for setting up the scope but all my pcp's have been spot on at 30 yards..
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All three of my PCPs are zero-ed for 50 yards....I only adjust the elevation turret if I shoot closer (GTA 30 yard shooting matches). I`ve used all three to shoot out to 70 yards last winter....consistantly hit a paper coffee cup filled with snow when there`s no wind.
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Doug, I recommend using Chairgun software . If you input pellet speed and some other variables it can optimize zero distance for your rifle and pellet.
Chris
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I guess I should clarrify.
What distance should I be testing pellets for accuracy at? Not necessarily zero.
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not for "zero" (I use 25 for that myself) but to check the pellets themselves 50 + yards.
Iuse JSB Express 7.9g just under 1000fps for Squirrels out to 70 yards, 80 yards on Starlings, "if" the 8.4 had groups as well at range (50 yards) I would be using those. Both pellets grouped very well at 25 yards the lighter ones (who knows why) group 50% better at 55 yards.
I have a friend who shoots Field Target witha 6.5fpe (NOT a typo there) airgun, all the JSB pellets did well up close but at range one was a clear winner, that would be the one to use.
And if anyone isnt hip Brad has some nice clalclators :
http://www.airguns.net/software_downloads.php
http://www.airguns.net/trajectory.php
but I think that is a different subject?
Let us know which works best for you at long range.
John
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To what ever distance the gun/pellet combination shoots flat... then use mill dots after that...
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MDR 840fps w/21.1gr Kodiak's 40yrds sight in From 8yrds to 45yrds never over 1/2" up or down. That's real world at the range not some chair gun stats, how does a chair gun shoot anyway.good luck .....Franky
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Franky, just put your #'s into the chairgun and guess what?......it's right on the money! from 8.6 to 45.1 1/2" up and down. I found that chairgun is a great reference, good BASE for your real life shots. BTW if you're shooting 75 yds you should hold over 4 dots on 16x magnification...
Chris
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Preez, Thank's for that info on 75yrds. My shots were from 1 pc. rest covered bench only vertical measured. You need a grandson to move stand about 2-3yrds at a time to 45yrds.wanted to go father but ran out of Help.What was it at 100yrds (drop) .Did they do tests or just math (chargun) I was not a believer maby thier right and I wasted My time.Fun anyway w/Charlie 10yrs young.....Franky
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Chairgun is for those of us who don't have 10yr old grandsons yet.... or 10yr old sons for that matter. Anyways I believe it is strictly math with compiled pellet weights and ballistic co-efficiency. It's fun to tinker with. At 100 yds you'd have 8 mildot drop at 16X magnification or 6 dots at 12x magnification. Chairgun can also give you inch or click values for all those distances.
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I sight in at 60 yards. I learn my hold over / under for 10-50 - 100+. The SR12 reticule on my Hawke scope comes in handy.