Scope Dialling In

[lgray88 4]

im alittle lost on this dialing in business , at present if i make a shot beyond what my zero is i "hold over" but say if i was shooting targets which is the plan, when ive got my scoped dialled in at a 100 yard zero each click represents 1/8 of a inch but say if i want to dial the gun in for a target at 200 yards what value do i use the 1/8 of a inch at a hundred or do i use the 1/4 inch at 200 yards or is there are a special formula to figure this out beacuse obviously clicks will represent different value through the range from 100 yard to 200 yards , can anyone help?

 

liam

[brno17 5]

if you know your bullet details try inputing the data into the program in this link it works out holdover and clicks

 

atb alan.

 

http://www.biggameinfo.com/index.aspx?page=%2fbalcalc.ascx

[lgray88 4]

can someone explain what they mean by maximum point blank range

[brno17 5]

can someone explain what they mean by maximum point blank range

 

max point blank range is more or less a zero where you will still hit say a fox sized target out to a maximum range e.g. if your zero is 1inch high at 100yds you can aim bang on out to maybe 250yds or any range under this and still hit. it was once explained to me as firing down an imaginary 4 inch diameter pipe out to your max range the bullet will never hit top or bottom. hope this makes sense.

 

atb alan.

[lgray88 4]

ok excellent thank you, one last thing could anyone give a rough guestimate what the muzzle velocity will be of a .22-250 with a 50gr v-max bullet and 36.5grains of accurate 2520 powder i cant seem to get a reading from the load software im using , then again im abit new too it.

 

liam

Edited March 12, 2009 by lgray88

[jamie g 17]

what i would do is set a target up at different ranges shoot at them and then you will find out how many clicks you need to go up on them

[Mr_Logic 5]

ok excellent thank you, one last thing could anyone give a rough guestimate what the muzzle velocity will be of a .22-250 with a 50gr v-max bullet and 36.5grains of accurate 2520 powder i cant seem to get a reading from the load software im using , then again im abit new too it.

 

liam

Roughly 3700fps. Have a look at their website, www.accuratearms.com. Max load is 37gr, which meant to be 3819 fps. Knock off 100fps or so for the half grain (probably slightly less in actual fact) et voila, 3700-ish.

 

Also, remember that your scope adjustments are almost certainly not 1/4 or 1/8 of an inch, but 1/4 or 1/8 of MOA. MOA is very very nearly spot-on 1 inch at 100 yards. therefore, multiply up in yards and divide by 4 or 8 depending on 1/4 or 1/8 MOA adjustments.

 

Beware the scope with inaccurate adjustments though - what you see is not always what you'll get