how do you calculate maximum point blank

is that 2.5 inches above line of sight to 2.5 inches below line of sight or something else

My .444 Marlin - 100 yd zero because it throws punkin balls.

Most of my other rifles, 30-06, 6mm Rem, .25-06, etc have a 200 yd zero plus or minus. Point blank range for them is 0 to 250 yds. I use BDC reticles (no dialing) and try to match the reticle subtensions to 100 yd increments out to 500 or 600 yds.

Depends on what I'm doing, the sight the gun and the caliber but generally
(When I say all cent fires I mean stuff that isn't gonna be affected by wind and what not at 100yd so not .22 hornet or similar
All centerfires with legit optics ( not red dots or LPVO's) are 100yd ad dead on as center as possible
All center fires with "other optics" 50yd
Center fires with just irons, depending upon the type of sites 35 bare minimum, 50yd preferred . Dont have any I want @ 100yd yet though.

Rimfires. 25 - 30 all the way round. Same for air rifles

Why ? Because at those distances less crap can happen to make your ZERO in correct. For center fires this can be how a person shoots, really high wind , possible problems with reloads ect. With rimfires and air rifles the same goes but you also have to deal with "dwell time".

Not to mention I HATE the whole deal of what's supposed to happen. I zero in at at those distances then log all my data into my ballistic program and then a true and test everything to my max distance. I've just seen way too many people screw the pooch by doing the whole " well if I sought it in 4" high at 50 at 300 I'll drop in on him" . Yeah no I like knowing at 50 I'm her at 100 I'm dead on at 150 I'm here and so on. I've just like being able to say if I can only see a small vital zone I know EXACTLY where why holds are, not should be. I don't like track and I prefer my animals to drop DRT. And being that anal about things let's be move away from the big middle shots/boiler room shots and on to CNS shots. And I have to say if you hunting in a form.whwre you can take your time taking your shots and possibly even dialing in. If your able to on. Your scope I think that's the best thing to do. I mean if course if your doing something where its going to be snap shorts / limited exposure then if couiother methods make way more sense.

Also those distances I zero are generally where I expect a vast majority of my shots to be made and I want them pin point as possible. Habit I picked up from air rifle hunting that's really really severed me well.

When I was shooting Appleseed know distance I found the 25 yard zero cutting bullet holes was where I wanted to be , another way to say it would have been 6 inches high at 100 yards

20 inch barrel m193 ammo 6" high at 100 , 10" high at 200 , 7" high at 300 and 4" low at 400 yards , one zero 4 distances bottom hold the target for 100-300 yards and hold the 5 on the target at 400 yards dropped nearly every round into the V ring of the target.
watched a bunch of guys dialing stuff in at distances and it is a place to get tired and mess up then have to try and figure out what you dialed in wrong.

I go the full 3" above and below. Depending on caliber and load it's usually 3" high around 150 yds and 3" low at around 300 yds. I shot every 50 yds out from a hundred yds to verify. My varmint guns usually just 2" high at a hundred works for my shooting.

I’m not satisfied with the 25 yards zero without shooting at 100 and over. Those 25 yard shots must be right together.

25 yards is a good starting point. scope or sight can be way off and you still hit paper. if you think you may shoot 300 then finish up at 300 or two hundred or 8 hundred. but you need to shoot to figure out your rifle. those books and charts and calculators are fine but they dont replace pulling the trigger.

1 in high at 100 in 270
6 mm 1/2 in at 100
222 dead on at 200

Dead on at a 100 yds w/ .450 Bushmaster.

17hmr, used for coyote hunting with hounds, I sight in 1.5" high at 100 yds. That puts zero at about 150 yds and MPBR at 175... (going on memory). This makes for the ability to make quick shots at those distances ...them coyotes dont give you much time with a hound pushing them

All mine are zeroed for MPB range simply because can't afford the scopes with up/down left/right dials when getting ready to shoot
Plus don't carry a range finder

For (most )rifles, 2" high at 100 yards are good out to roughly 275 yards for deer sized animals.

I'm talking necked cartridges.

30_30 /45_70ish not included.

My 30 06 with buris fullfild
160 zero
1st line 226 zero
2 332 zero
3. 440
4. 548

Zero = 99yrds to 185 in two inch circle
1. 117 ". ". 235. Four inch
2. 131. 275. Six
3. 145. 308. Eight
4. 157. 336. Ten
Holding zero hi and low.

Muzzle 2730
180 grain Accu Bond

Sighted in for big game hunting.

I agree

one of the points I was making is make sure your good at the max range you intend to shoot find where you can't shoot any more

especially don't base your data on the near zero because your error adds up quickly at range

where if your right at 200 you won't be off closer

200 with my 7mm STW, 270, and 308. 100 with the wife's 260 simply because it has a scope with a BDC reticle (which I don't like but haven't got around to replacing) and those line up very close with the loads I am loading for it with hundred yard increments out to 600 when it is sighted in at 100. 100 yard zero on the 218 Bee improved, 223's and 200 on the 22-250. 25 yard zero on the 45/70 because it is used for hound hunting bears and that is farther than I ever actually shoot it. Rimfires anywhere from 25-100 depending on the gun. Pistols at 25 except the Contender, which has the rimfire barrel at 50 and the centerfire barrels zeroed at 100.

2" high at 100 yd. We could shoot out to 450 but rare. Most shooting 200 or closer.

NOT!!!
Not holding on fur (factory chambers)

2 inches high at 100yd would probably be fine for 200.


are you saying that is your sight in for 450yards? or just that you could find a place open enough that you could shoot 450 but you don't shoot that far

Depends on the caliber. You can use a maximum point blank calculator for your load. The idea is to sight your rifle in so that your bullet will never be above or below a 6 inch circle. Think of it like shooting down a pipe. This takes all the guess work out of shots because most calibers point blank range will be in excess of 200 yards.

Shooting rifles that launch at 2900 to 3200 fps, 2 inches high at 100 yards, with max distance out to 250 yards. Most of our deer as taken at 200 yards or less, so that allows one to simply point and shoot with no consideration for hold over or elevation concerns inside that distance. Unless wind is honking, no need to worry about wind either.