Post by pharmerjon on Oct 7, 2012 5:44:00 GMT -8
I'll wait and see what kind of speeds you're getting out of your 24", Ritch.
With the can on the end (adds~6") I don't want it too long as it will be used primarily for calling coyotes!
Plus I'd be coming from my 16" .223 (which is definitely not a speed freak) so having 4 more inches should be plenty for my needs (...thats what she said).
I've seen data (on "da internets" so taken with a grain of salt) getting 20'' bbls to 3700 with 32 grain v-maxes. If I could get the 40gr berger to around 3600 that would be plenty for my purposes.
The 16" .223 I currently run (with 40gr v-max) is probably somewhere around 3100 fps (figured with actual drops and extrapolating as I don't have a chrony). This gives me a drop of ~3 inches at 200 (sighted in at 100) and energy of 443 ft/lbs. @300 yds (about as far as I've ever shot a coyote) drop is 13.5 and energy is 307.
For a 20" 20 practical, if I could get to 3600 fps with a 40 grain projectile I'd be happy.
I figured the 40 grain berger (bc~2.25) @200yds (-1.7") and 663 ft/lbs; @300yds (-8.2) and 494 ft/lbs.
The 40 gr v-max (bc~2.75) @200yds (-1.6) and 736 ft/lbs and @300yds (-7.3) and 581 ft/lbs.
The 20pr is really shines over the .223 when you look at the data this way, which is why I am so excited to try it out!
Seriously, send me that barrel and I'll test it!
The v-max going that fast will probably do a little bit too much fur damage, however, mange has been a problem here for the past 5 years or so, and I do not care if the pelts get chewed up occasionally! ;D
Let me know what you think or if I'm way off base!
Thanks. -Jon
With the can on the end (adds~6") I don't want it too long as it will be used primarily for calling coyotes!
Plus I'd be coming from my 16" .223 (which is definitely not a speed freak) so having 4 more inches should be plenty for my needs (...thats what she said).
I've seen data (on "da internets" so taken with a grain of salt) getting 20'' bbls to 3700 with 32 grain v-maxes. If I could get the 40gr berger to around 3600 that would be plenty for my purposes.
The 16" .223 I currently run (with 40gr v-max) is probably somewhere around 3100 fps (figured with actual drops and extrapolating as I don't have a chrony). This gives me a drop of ~3 inches at 200 (sighted in at 100) and energy of 443 ft/lbs. @300 yds (about as far as I've ever shot a coyote) drop is 13.5 and energy is 307.
For a 20" 20 practical, if I could get to 3600 fps with a 40 grain projectile I'd be happy.
I figured the 40 grain berger (bc~2.25) @200yds (-1.7") and 663 ft/lbs; @300yds (-8.2) and 494 ft/lbs.
The 40 gr v-max (bc~2.75) @200yds (-1.6) and 736 ft/lbs and @300yds (-7.3) and 581 ft/lbs.
The 20pr is really shines over the .223 when you look at the data this way, which is why I am so excited to try it out!
Seriously, send me that barrel and I'll test it!
The v-max going that fast will probably do a little bit too much fur damage, however, mange has been a problem here for the past 5 years or so, and I do not care if the pelts get chewed up occasionally! ;D
Let me know what you think or if I'm way off base!
Thanks. -Jon