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+--- Thread: Bullet trajectory - different weight bullets (/showthread.php?tid=24583)
Bullet trajectory - different weight bullets - 603 Country - 05-30-2022
The new 6.5 Grendel has a Leupold VX5 3.5-15 with CDS and Firedot scope on it. Leupold will send me the first specialized elevation turret (based on bullet, weight, MV, BC, etc.) for free. Well, thats good, but I was worrying about what bullet should I get it set up for. I have a good stock of Hornady 123 gr SST rounds, but when I run through that, I plan to load up Nosler 100 gr Ballistic Tips. So, I was wondering, which should I plan for? So I ran some ballistics app work and found that the slower and heavier 123 gr SST, with the higher BC flies almost the same path as the 100 gr Nosler at a higher MV and lower BC. So, 1 turret fits for both. Nice. I wasnt expecting that.
Seems I put this in the wrong place. Meant to put it in the reloading section.
Bullet trajectory - different weight bullets - TedBrewer5 - 06-02-2022
If I were you I would shoot both those loads at 100,200 and 300 and see where they group. If you testing backs up what the app said they you will be good to go for one turret for both. If not, extra turrets are not much through the custom shop
I have two bullet weights that group similar at hunting distances so no need for scope adjustment.
Bullet trajectory - different weight bullets - Dub - 06-02-2022
Recently bought a V5HD 3-15x44mm with FireDot Duplex. It is going on a .270. I plan on having two loads for it and will be getting two of the turret caps.
Once my loads are dialed in I'll chronograph them while shooting during different ambient temps. Will also confirm point of impact at 100yd, 200yd, 300yd and further if possible. Then I'll compare with their data before ordering the turret caps.
Bullet trajectory - different weight bullets - grendelnubi - 06-02-2022
This is what I would suggest.
Go to http://www.shooterscalculator.com and put your projectile details in.
You can then graph each projectile and or download the data and graph it yourself. Attached is an example of how I determined my 120 Nosler BT and 129 Nosler ABLR projectiles had very similar trajectory up to a certain range. Note: The mill-radians chart is in clicks what is .1 mill. Notice there is only .1 mill or one click difference between them at 300 yards. The other chart is in inches
Then what you can do is fine tune the trajectory by altering the load to adjust the velocity. Also you can determine what near zero and far zero works best.
Here is one I setup for me.
https://shooterscalculator.com/ballistic-trajectory-chart.php?t=fa3a030c
Bullet trajectory - different weight bullets - 603 Country - 06-02-2022
I have what I need regarding trajectory when sighted in at 100 yards. They fly very close to the same out to 300 yards, though surely they wont share the same POI. When the time comes to switch to the 100 gr Nosler, if that time ever comes (I might eventually be able to buy 123 gr SST bullets), Ill find the right load and keep using the same turret (probably). And, of course, Ill shoot at various distances to make sure that the turret is actually correct for both bullets. If not, Ill order an other turret.
I have the same type scope on my 260, and have tested it at various distances and found it to be very accurate at least to 400 yards (where a hog was when I shot him).
The rifle is to be a pig shooting rifle (and coyotes and probably deer), at distances only to 300 yards or so, and the Firedot was more important to me than the CDS. Black hog in dim light and black crosshairs make the Firedot a terrific thing to have.
Bullet trajectory - different weight bullets - LR1955 - 06-03-2022
603:
To your hunting distances of 300 yards, trajectories are all very close to each other, no matter the cartridge or bullet. You are right that POI may change but trajectories will be within a few inches of each other. I would bet that POI will be pretty close but would surely find out before depending on it.
What this means is that buying a aftermarket BDC is not necessary if your range is within 300.
At 400 you will see a difference and it will probably mean something. At 500 I am sure you will see a difference and it will mean something. Past that and the differences become huge.
LR-55
Bullet trajectory - different weight bullets - 603 Country - 06-03-2022
Someone did ask me why I wanted the CDS on a scope and rifle that may only be used out to 300 yards or so. Its a fair question. What I wanted specifically was the Firedot, but the custom tailored turret is free, so why not get it. I do use the CDS turret on the 260, though not very often. I recently took a coyote at 250 and a fat doe at 275. And last year, forgive me if Ive mentioned it already, I used it on a hog at 400 yards. That was the moment that I decided that the Firedot was a great thing. I knew the hog was at 400 yards, because he was in front of another blind that I have. Light was dimming fast. The hog was black, the crosshairs are black, and the field is almost too dark to see the hog. He was a dim sight. I dialed the scope, put the illuminated dot at the dimmest level, and shot the hog. Without that scope I never would have been able to make that shot with any other rifle/scope combination I have. Ive come to have great confidence in shooting with that scope. The furthest I can shoot on our place is 500 yards. I have not tested the scope to that distance yet, but wouldnt shoot at a deer at that distance. Pigs and coyotes will get shot.
Ill test the CDS on the grendel out to 400, just in case. And worth mention is that probably the grandson will use this rifle for deer hunting, and he doesnt have 60 years of shooting and deer hunting experience like I do. The CDS will benefit him.
Bullet trajectory - different weight bullets - TedBrewer5 - 06-03-2022
Probably my biggest regret on my Grendel setup is not getting a fire dot scope. I bought a ACME Machine 6x24x50 FFP illuminated scope. It is a fantastic target scope but the illuminated tree style reticle is not the best for hunting. The main advantage is the scoped paired with the StrelokPro App means no dialing anything. All hold is on the reticle.
A fire dot scope is is the plans for the future and the 6x24x50 will get sold or moved to my 06
Bullet trajectory - different weight bullets - 603 Country - 06-03-2022
Back a few years or so, I decided that I needed a scope with an illuminated reticle. I bought a couple of Vortex Viper PST ffp scopes, one was 4-16 and the other was 6-24. Still have the 4-16, but the illumination is too bright, even at the lowest setting. Next up was a Vortex Crossfire Hog Hunter scope, which had decent illumination, but it quickly broke. Next was the VX5 3-15 Firedot with CDS and it ticked all the boxes. And later, trying to save a few bucks, I got an Athlon Midas 2.5-15, and its a very nice scope with good illumination and a good reticle. This last rifle, I went back to the VX5 and the Firedot.
The Athlon Midas, I must say, has been a real nice scope. Itll stay on the 223 AR.