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40g vmax reloads


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i have at one point or other used 35, 40, 50, 52, 53, 55, and 60gr in my .222

 

I now use 52gr and 60gr exclusively

There is little benefit to running 40's hot (3400fps+) when a 50-55gr run at book MV's (3200fps) has better windage and energy downrange

the trajectory difference is marginal and beyond the realms of what most people can shoot at 300+

 

You are talking 1/2" at 400yds!

 

you are however talking 4-5" difference with a 10mph wind...a very light wind in most circumstances

 

what counts them out for me is the energy

past 150yds they are down on energy compared to the heavier bullet

 

 

 

http://www.shooterscalculator.com/ballistic-trajectory-chart.php?pl=%5BPreset+Name%5D&presets=&df=G1&bc=0.200&bw=40&vi=3400&zr=100&sh=1.5&sa=0&ws=10&wa=90&ssb=on&cr=400&ss=25&chartColumns=Range~yd%3BElevation~in%3BElevation~MOA~FBFFF5%3BElevation~MIL%3BWindage~in%3BWindage~MOA~FBFFF5%3BWindage~MIL%3BTime~s%3BEnergy~ft.lbf%3BVel%5Bx%2By%5D~ft%2Fs&lbl=&submitst=+Create+Chart+

 

http://www.shooterscalculator.com/ballistic-trajectory-chart.php?pl=%5BPreset+Name%5D&presets=&df=G1&bc=0.242&bw=50&vi=3200&zr=100&sh=1.5&sa=0&ws=10&wa=90&ssb=on&cr=400&ss=25&chartColumns=Range~yd%3BElevation~in%3BElevation~MOA~FBFFF5%3BElevation~MIL%3BWindage~in%3BWindage~MOA~FBFFF5%3BWindage~MIL%3BTime~s%3BEnergy~ft.lbf%3BVel%5Bx%2By%5D~ft%2Fs&lbl=&submitst=+Create+Chart+

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i have at one point or other used 35, 40, 50, 52, 53, 55, and 60gr in my .222

 

I now use 52gr and 60gr exclusively

There is little benefit to running 40's hot (3400fps+) when a 50-55gr run at book MV's (3200fps) has better windage and energy downrange

the trajectory difference is marginal and beyond the realms of what most people can shoot at 300+

 

You are talking 1/2" at 400yds!

 

you are however talking 4-5" difference with a 10mph wind...a very light wind in most circumstances

 

what counts them out for me is the energy

past 150yds they are down on energy compared to the heavier bullet

 

 

 

http://www.shooterscalculator.com/ballistic-trajectory-chart.php?pl=%5BPreset+Name%5D&presets=&df=G1&bc=0.200&bw=40&vi=3400&zr=100&sh=1.5&sa=0&ws=10&wa=90&ssb=on&cr=400&ss=25&chartColumns=Range~yd%3BElevation~in%3BElevation~MOA~FBFFF5%3BElevation~MIL%3BWindage~in%3BWindage~MOA~FBFFF5%3BWindage~MIL%3BTime~s%3BEnergy~ft.lbf%3BVel%5Bx%2By%5D~ft%2Fs&lbl=&submitst=+Create+Chart+

 

http://www.shooterscalculator.com/ballistic-trajectory-chart.php?pl=%5BPreset+Name%5D&presets=&df=G1&bc=0.242&bw=50&vi=3200&zr=100&sh=1.5&sa=0&ws=10&wa=90&ssb=on&cr=400&ss=25&chartColumns=Range~yd%3BElevation~in%3BElevation~MOA~FBFFF5%3BElevation~MIL%3BWindage~in%3BWindage~MOA~FBFFF5%3BWindage~MIL%3BTime~s%3BEnergy~ft.lbf%3BVel%5Bx%2By%5D~ft%2Fs&lbl=&submitst=+Create+Chart+

Depends if you stick to the standard pressures for 222. Based on older and weaker actions! The case is as strong as 223 and with forty grainers +3800fps is available in normal strong actions.

Then it starts to get interesting!

 

 

U.

Edited by Underdog
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Depends if you stick to the standard pressures for 222. Based on older and weaker actions! The case is as strong as 223 and with forty grainers +3800fps is available in normal strong actions.

Then it starts to get interesting!

 

 

U.

Agree

I have never hit pressure signs on any loads well past max book loads in a BRNO Fox made in the 60's!

just never chased MV for the hell of it when accuracy can be found lower down

 

but then you also have the comparable increase in MV for a 50gr with better BC

3500fps is easily doable

you need to run out of legs on the heavier bullet and create a very large gap between the Max MV's to justify it IMO

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i have at one point or other used 35, 40, 50, 52, 53, 55, and 60gr in my .222

 

I now use 52gr and 60gr exclusively

There is little benefit to running 40's hot (3400fps+) when a 50-55gr run at book MV's (3200fps) has better windage and energy downrange

the trajectory difference is marginal and beyond the realms of what most people can shoot at 300+

 

You are talking 1/2" at 400yds!

 

you are however talking 4-5" difference with a 10mph wind...a very light wind in most circumstances

 

what counts them out for me is the energy

past 150yds they are down on energy compared to the heavier bullet

 

 

 

http://www.shooterscalculator.com/ballistic-trajectory-chart.php?pl=%5BPreset+Name%5D&presets=&df=G1&bc=0.200&bw=40&vi=3400&zr=100&sh=1.5&sa=0&ws=10&wa=90&ssb=on&cr=400&ss=25&chartColumns=Range~yd%3BElevation~in%3BElevation~MOA~FBFFF5%3BElevation~MIL%3BWindage~in%3BWindage~MOA~FBFFF5%3BWindage~MIL%3BTime~s%3BEnergy~ft.lbf%3BVel%5Bx%2By%5D~ft%2Fs&lbl=&submitst=+Create+Chart+

 

http://www.shooterscalculator.com/ballistic-trajectory-chart.php?pl=%5BPreset+Name%5D&presets=&df=G1&bc=0.242&bw=50&vi=3200&zr=100&sh=1.5&sa=0&ws=10&wa=90&ssb=on&cr=400&ss=25&chartColumns=Range~yd%3BElevation~in%3BElevation~MOA~FBFFF5%3BElevation~MIL%3BWindage~in%3BWindage~MOA~FBFFF5%3BWindage~MIL%3BTime~s%3BEnergy~ft.lbf%3BVel%5Bx%2By%5D~ft%2Fs&lbl=&submitst=+Create+Chart+

can see what your saying, the reason for the lighter bullet was more for longer range rabbits and crow, the energy level loss not too much of a problem on rabbits but could see it with fox's,

though the wind drift is more a concern, if i can get a flatter shooting round then i could look at doing away with the hmr as reloads are not much more than hmr prices,

 

 

colin

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Have you ever seen one of those?

If that question is to me then yes, I owned one. In fact I shot my longest fox ever with it. I used a 52grn Speer hpbt match bullet pushed by h322 for a leisurely 2850 fps. 388 paces, twice! It was still wriggling after the first. The second ended it! 7x meopta scope.

I was about 24 :-(.

 

U.

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i have at one point or other used 35, 40, 50, 52, 53, 55, and 60gr in my .222

 

I now use 52gr and 60gr exclusively

There is little benefit to running 40's hot (3400fps+) when a 50-55gr run at book MV's (3200fps) has better windage and energy downrange

the trajectory difference is marginal and beyond the realms of what most people can shoot at 300+

 

You are talking 1/2" at 400yds!

 

you are however talking 4-5" difference with a 10mph wind...a very light wind in most circumstances

 

what counts them out for me is the energy

past 150yds they are down on energy compared to the heavier bullet

 

 

 

http://www.shooterscalculator.com/ballistic-trajectory-chart.php?pl=%5BPreset+Name%5D&presets=&df=G1&bc=0.200&bw=40&vi=3400&zr=100&sh=1.5&sa=0&ws=10&wa=90&ssb=on&cr=400&ss=25&chartColumns=Range~yd%3BElevation~in%3BElevation~MOA~FBFFF5%3BElevation~MIL%3BWindage~in%3BWindage~MOA~FBFFF5%3BWindage~MIL%3BTime~s%3BEnergy~ft.lbf%3BVel%5Bx%2By%5D~ft%2Fs&lbl=&submitst=+Create+Chart+

 

http://www.shooterscalculator.com/ballistic-trajectory-chart.php?pl=%5BPreset+Name%5D&presets=&df=G1&bc=0.242&bw=50&vi=3200&zr=100&sh=1.5&sa=0&ws=10&wa=90&ssb=on&cr=400&ss=25&chartColumns=Range~yd%3BElevation~in%3BElevation~MOA~FBFFF5%3BElevation~MIL%3BWindage~in%3BWindage~MOA~FBFFF5%3BWindage~MIL%3BTime~s%3BEnergy~ft.lbf%3BVel%5Bx%2By%5D~ft%2Fs&lbl=&submitst=+Create+Chart+

Never quite managed 400, 16 inch is just too short to get the velocity needed. :/

Am settled on re-barrel to 223 ai 1:8 when funds allow.

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