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Rifles, Reloading, Optics, Equipment
Rimfire and Airguns
.22 to .308 comparison trainer distances
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<blockquote data-quote="top predator" data-source="post: 330832" data-attributes="member: 13514"><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">based on my experience and #'s through my set ups both 22 and 308 and running through a ballistics calculator that matches my range results, i came up with a drop comparison(22lr zeroed at 50 yards, .308 at 100yards,drop in inches). once again, this best matches my data, your numbers will probably differ:</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'"></span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">22lr 40gr. .075bc 1040fps / .308win 165grSST .447bc 2600fps </span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'"></span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">22lr drop .308</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">50yds 0 = 100yds</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">75yds 2.8 = 175yds</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">100yds 8.3 = 240yds</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">125yds 17.6 = 315yds</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">150yds 30.8 = 380yds</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">175yds 47.3 = 450yds</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">200yds 68.7 = 510yds</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">225yds 92.5 = 560yds</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">250yds 123.9 = 630yds</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">275yds 158.2 = 690yds</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">300yds 199.9 = 770yds</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">325yds 248.8 = 820yds </span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">350yds 304.8 = 880yds</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">375yds 367.9 = 940yds</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">400yds 437.6 = 987yds</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">i'm working on the wind drift one, i have 1 for each, just got to match the numbers up. </span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'"></span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">my thoughts on the drop chart was that if i'm shooting at 100 with a 22 and it drops 8.3", at what yardarge would my 308 drop 8.3" ? ....answered at 240 yards (at least with my set up).</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'"></span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">so the next question would be....</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'"></span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">if my 22lr, at 100 yds, drifts 5" with a 7mph 3:00 wind, my .308 drifts 5" at what distance with the same wind? answer is 300yards (at least with my set up), and is pretty darn close to what i get on paper.</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'"></span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">i know that windage is super important, however to me, right now drop takes precedence over windage, so when i'm shooting at my 200 yard range and i have a guy next to me bustin my stones cause i'm using a 22, i'll have some data to say i'm simulating shooting a .308 at 510 yards. </span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'"></span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">then if the shooting gods are on my side and i pull off a 5" group, i can say i'm simulating a sub moa .308 at 510 yards. because i'm a natural loud mouthed cocky ahole, if the guy next to me shoots a +2" group, i can point out that on scale my "puny" 22 just outshot his .308</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">the tough thing is to find a "true simulation / trainer" for the .308, perhaps by a change of 22lr ammo to equal both drop and windage characteristics of the .308 </span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'"></span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">as shown above at 100 yards the drop equals 240, but the windage is 300. perhaps by finding a 22 ammo (maybe high velocity)that comes closest to mimicing both drop and windage at several distances (if possible) would be the key to finding that TRUE simulation. </span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'"></span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">if not possible, one would have to settle for a 22 ammo that would be based on either the drop or windage of .308, (that would be of a personal preference i guess). mine would be drop, as i think it would be better in my case to go with elevation. it's usually easier and more consistantly predict bullet drop with the constants of gravity, temp., alt., and humidity, as compared to the wind which can make so many drastic changes in speed and direction at 100 and 200 and how much it affects the 22 at those ranges, and you can only get a truly accurate wind reading at your shooting station.</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'"></span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">however my 22 shoots well enough as it's own entity, and i spent too much time getting there that i don't care if it mimics my .308 or not, just shooting it for what it is.</span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'"></span></span></p><p><span style="color: black"><span style="font-family: 'Trebuchet MS'">but will be working on a .22 to .308 wind chart, none the less</span></span></p></blockquote><p></p>
[QUOTE="top predator, post: 330832, member: 13514"] [COLOR=black][FONT=Trebuchet MS]based on my experience and #'s through my set ups both 22 and 308 and running through a ballistics calculator that matches my range results, i came up with a drop comparison(22lr zeroed at 50 yards, .308 at 100yards,drop in inches). once again, this best matches my data, your numbers will probably differ: 22lr 40gr. .075bc 1040fps / .308win 165grSST .447bc 2600fps 22lr drop .308 50yds 0 = 100yds 75yds 2.8 = 175yds 100yds 8.3 = 240yds 125yds 17.6 = 315yds 150yds 30.8 = 380yds 175yds 47.3 = 450yds 200yds 68.7 = 510yds 225yds 92.5 = 560yds 250yds 123.9 = 630yds 275yds 158.2 = 690yds 300yds 199.9 = 770yds 325yds 248.8 = 820yds 350yds 304.8 = 880yds 375yds 367.9 = 940yds 400yds 437.6 = 987yds[/FONT][/COLOR] [COLOR=black][FONT=Trebuchet MS]i'm working on the wind drift one, i have 1 for each, just got to match the numbers up. my thoughts on the drop chart was that if i'm shooting at 100 with a 22 and it drops 8.3", at what yardarge would my 308 drop 8.3" ? ....answered at 240 yards (at least with my set up). so the next question would be.... if my 22lr, at 100 yds, drifts 5" with a 7mph 3:00 wind, my .308 drifts 5" at what distance with the same wind? answer is 300yards (at least with my set up), and is pretty darn close to what i get on paper. i know that windage is super important, however to me, right now drop takes precedence over windage, so when i'm shooting at my 200 yard range and i have a guy next to me bustin my stones cause i'm using a 22, i'll have some data to say i'm simulating shooting a .308 at 510 yards. then if the shooting gods are on my side and i pull off a 5" group, i can say i'm simulating a sub moa .308 at 510 yards. because i'm a natural loud mouthed cocky ahole, if the guy next to me shoots a +2" group, i can point out that on scale my "puny" 22 just outshot his .308[/FONT][/COLOR] [COLOR=black][FONT=Trebuchet MS]the tough thing is to find a "true simulation / trainer" for the .308, perhaps by a change of 22lr ammo to equal both drop and windage characteristics of the .308 as shown above at 100 yards the drop equals 240, but the windage is 300. perhaps by finding a 22 ammo (maybe high velocity)that comes closest to mimicing both drop and windage at several distances (if possible) would be the key to finding that TRUE simulation. if not possible, one would have to settle for a 22 ammo that would be based on either the drop or windage of .308, (that would be of a personal preference i guess). mine would be drop, as i think it would be better in my case to go with elevation. it's usually easier and more consistantly predict bullet drop with the constants of gravity, temp., alt., and humidity, as compared to the wind which can make so many drastic changes in speed and direction at 100 and 200 and how much it affects the 22 at those ranges, and you can only get a truly accurate wind reading at your shooting station. however my 22 shoots well enough as it's own entity, and i spent too much time getting there that i don't care if it mimics my .308 or not, just shooting it for what it is. but will be working on a .22 to .308 wind chart, none the less[/FONT][/COLOR] [/QUOTE]
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.22 to .308 comparison trainer distances
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