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180 vs 240 gr 44 mag trajectory

9.1K views 16 replies 12 participants last post by  HIKayaker  
#1 ·
Where should the 240 gr bullet hit in relation to the 180 gr that is sighted in to one half in high at 25 yds? Thanks, I have a 1894 44 mag that I have put peep sights on and cant find the trajectory tables I need.
 
#2 ·
I have wondered the same thing.
I usually shoot 240's and occasionally 300's, but I have a box of 180's from Underwood that might go over 2000FPS, I am guessing about 2100.
POI is a good question on those as I still haven't shot any. My guess is lower, faster bullet.
 
#4 ·
Lighter bullet going faster should impact lower. Never tried it in a 44 mag, interested in anyones results. DP
 
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#6 · (Edited)
Perhaps you could take your rifle out and shoot both loads in question. Save the targets and post the pictures here. Then you'd have definitive proof,and we'd be enriched by the knowledge. Try it at 50 or 75 yards,you'll get a better idea of trajectory differences. 25 yards is too close,the bullets are just crossing the line of sight at that distance,and POI will be very near the same. Tables can not replace real life shooting,they're only an approximation.


Rob
 
#7 ·
The 180 pushed faster will shoot flatter (and slightly lower) than the 240grn. I never came across any loads that were over 2000 for the 180 grn---I remember using 29grns of H110 on a 180 grn for my dessert eagle and that was pretty hot (big flame out the barrel).
May be different out of the rifle but the shorter range of 25 is not far enough. When you go out to 50 and 100yrds is where you will see the trajectory come into play.
 
#15 · (Edited)
In my Rossi 16 inch barrel 44 mag, using factory open sights, 180 grain factory (ICI) shoot about 2 inches higher at 50 yards than 240 grain factory (Magtech). Naturally, YMMV. I indeed realize that Magtech 240s do not seem a warm load.

Regards,

Dyson
Though they seem to conflict, These are at least general ANSWERS that give us a general idea of the question you asked in general! :congrats:
Thanks Fellas - :tee:

Looks like we would need to go out further than 25 yds to see more of a real difference in the effect on trajectory
 
#8 ·
I had a very repeatable, highly accurate load in a heavy for caliber Beartooth Bullet. With the 180s, using the second reticle mark down from center, I am able to continue shooting very accurate loads, just with a very different sound and recoil. Practically sounds like a blow gun.
 
#9 ·
with what powder does it sound like a blow gun. I have been loading 357,41 and 44 for max velocity with slower powders, no9, 300mp and 296 for rifle use and lighter loads with be-86 and unique only cause I got it, still don't have my range finished so can't talk about 100 yard targets yet, but the big knot on the cedar out the backdoor gots lotsa holes in it.
 
#11 · (Edited)
Yeah we shoot them all the time,we just don't use your rifle. The sight height above bore centerline varies from rifle to rifle,so they all shoot slightly different. Some rifles won't follow accepted rules and will shoot lighter bullets lower instead of higher,a result of higher velocity,shorter barrel time and lower release point in the barrel harmonic. Yours may also place the hits left or right of POA,depending on barrel vibrations. Every firearm is different.
There's no substitute for real life targeting. Please post your targets so we'll know.


Rob
 
#17 ·
It's counter intuitive. In handguns, heavier bullets shoot higher than lighter bullets.

This is because the heavier bullet causes more recoil, which tips the barrel up higher than lighter bullets. Also heavier bullets are usually moving a bit slower than lighter bullets and stay in the barrel slightly longer, so the upward barrel tip has more time to develop.

If you are able to plumb out the handgun's line of sight (sights) and the true barrel axis, you would see that the point of aim is lower than bore axis.

This is why many of the older target revolvers have such tall front sights. It makes the point of aim lower, below the bore axis, anticipating the barrel lift from recoil. Ideally, the barrel lifts just enough so that the bullet hits the point of aim.

FWIW, this contrasts with rifle sights, which are aimed above the bore axis. The path of a rifle bullet encounters the line of sight twice, once (going up) part way to the target, and again, (going down) at the point of aim on the target.
 
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