MPBR opinions

[RockyMtnMT]

What kind of lazer beam are you shooting to have 4.8 moa of up at 680 with a 200yd zero?

I didn't want to take time to pull actual ballistics to make the post.

It's a Creed don't ya know!

 

[graywolf]

Depends on the bullet velocity and BC. But 243 is a good candidate for using MPBR sighting (maybe ~350) because it is flat shooting and loses a lot of energy beyond 400 yd anyway.

 

[rickjoty]

Not a big fan of mpbr. That system seems to put most rifle 4" high at around 150 yards, which happens to be a pretty common shot distance. I prefer a 200 yard zero, which allows for dead hold out about 250. Dial or use holdover marks for anything farther than that.

You know 257Tony I'm with you. I look at a zero somewhere in the 225 to 250 range. It keeps a manageably small over shot at 100, and still good out to 350 or so. After that check your chart and carefully consider environmental factors. Take this from a guy who's longest shot has been 197 yards on a nice Antelope. So after 200 I probably don't know what I'm talking about. As an after thought, I had to shoot that Antelope twice. My 7mm RM had a problem with the trigger and the pull weight was drifting, 1.5 - 3. I had gloves on and as I was moving my crosshairs onto the target the gun just went off. It knocked it down but I had to run up a 100 yards and take a head shot for the finish. That gun went right to the smith.

 

[FIGJAM]

MPBR is a great way to go for big game hunting with fast and flat cartridges. There are some MPBR calculators online. I'd stick with an 8" target size and I would actually zero your gun at whatever the far zero is, usually around 300 yards. That gets you out to a 350-375 ish MPBR. As long as you hold in the center of the vitals you'll be good to go. I would get some range time in at various distances so you are aware of how high or low it is. If you don't have exposed turrets its the way to go in my opinion.

Most of my big game rifles have VX5HDs with CDS, so I have a 200 yard zero and dial for elevation.

I have several buddies who still use MPBR very successfully, even with BDC reticles.

I have my coyote rifles set up for MPBR with a 4" target. Works really well for me.

 

[WildRose]

What are your thoughts on sighting in a rifle for MPBR for someone like me who is new to long range hunting? I don't yet have the skills to shoot past that range, and everything would have to be just right for me to confidently get close, so I was thinking it would be a good way for me to simplify things till I can practice enough at long range to extend my reach. My hunting rifle is a savage.243 I can get it to shoot consistent .7 moa 5 shot groups, so the gun is more capable than I am.

As long as you know the trajectory to that point and adjust up/down accordingly it works great.

Most of my shot opportunities occur extremely quickly so I set up everything for 350yds. I know my trajectories and adjust to that point and when needed for longer range dial beyond 400yds.

 

[cohunt]

You can adjust your "vitals" for mpbr on strelok app--- I use 3" up/down....after that I adjust the power of my 2nd focal plane scope to get close to distances...example below

at 13.5x zoom
Mpbr is 320 on this setup, the bdc points are about 375,500,600,750, & 900 y

Though I usually dial after 400 yards or so depending on conditions

 

[LanceK]

Cohunt, I'm going to have to look up that app, I can't tell what all that information is, there sure is a lot going on there.

 

[memtb]

I'm pretty similar with Steve on this. Our numbers may vary slightly, but an insignificant amount!

I like the MPBR system. It works great, if one does not have/use a range finder......all shots do not afford the hunter the time to range. If you're half decent at range judgement to around 300 yards, practice can make you pretty proficient.... then my sight-in works well. We do a 300 yard zero. We know that at around 170-180ish, we're at maximum trajectory elevation...and hold a few inches low. If the shot appears long, in excess of 300.....hold a bit high! We can "hold on hair" for big game, from muzzle to 400 yards. If the target appears to be well beyond your 300 yard judgement.....a rangefinder and sighting adjustment may be in order. We've taken several game animals to and slightly beyond 400, by merely giving a little holdover above intended impact point. And, have made shots on coyotes and fox around the trajectory high point....by merely holding a little low. With our rifles, a 300 yard zero, gives us approx. 5 to 6 inches high at around 180, and about 10 low at 400. Easy, quick, aimpoint adjustments....and no reason to miss ( provided you are even close on the distance estimate) big game inside those parameters. memtb

 

[Orange Dust]

And what if you guess he's at 350 but in reality its 400? You'll have him missed or wounded about the same time I'm getting an accurate range.

At 400 my bullet will land just behind his heart if I hold center. But given time I will range him no matter what the range. That way it is easier to find the spot he was if he runs off. I hunt bean fields and know how far it is across, to the corners, and the trails they normally pop out of. Pretty easy to know about how far under these conditions. If there is no hurry I will dial to the exact range. Sometimes that isn't an option. There is a lot to be said for knowing your surroundings and your rifle well.

 

[Orange Dust]

I'm pretty similar with Steve on this. Our numbers may vary slightly, but an insignificant amount!

I like the MPBR system. It works great, if one does not have/use a range finder......all shots do not afford the hunter the time to range. If you're half decent at range judgement to around 300 yards, practice can make you pretty proficient.... then my sight-in works well. We do a 300 yard zero. We know that at around 170-180ish, we're at maximum trajectory elevation...and hold a few inches low. If the shot appears long, in excess of 300.....hold a bit high! We can "hold on hair" for big game, from muzzle to 400 yards. If the target appears to be well beyond your 300 yard judgement.....a rangefinder and sighting adjustment may be in order. We've taken several game animals to and slightly beyond 400, by merely giving a little holdover above intended impact point. And, have made shots on coyotes and fox around the trajectory high point....by merely holding a little low. With our rifles, a 300 yard zero, gives us approx. 5 to 6 inches high at around 180, and about 10 low at 400. Easy, quick, aimpoint adjustments....and no reason to miss ( provided you are even close on the distance estimate) big game inside those parameters. memtb

This is exactly what I do and have since before lasers were available to the public.

 

[WildRose]

This is exactly what I do and have since before lasers were available to the public.

We started off with the old Bushnell Prismatic Rangefinders back in the early 70's.

Thank God Technology has advanced!

 

[Orange Dust]

I will say this: I suspect most of the folks that use mpbr as a baseline for dialing are old, like me and have used it for longer than rangefinders have been available. They all know where to hold close and far. It is quick and deadly. It is also very appropriate for the OP using a 243 in my opinion. He can sight that way, learn how to hold and be effective as far as he should be shooting medium game with the little gun in my opinion. He can use duplex cross hairs and be just fine. If he happens to have an old 4-12 vx 2 the bullet will hit at the junction of the duplex at 100 yds on 12x. Duplex on several scopes are 3min on high power. As range increases it will always fall between that point and the crosshair until it reaches "0". When the bottom duplex is no longer on the animal, it is too far. No laser needed, nice to have, but not really needed.

 

[Orange Dust]

We started off with the old Bushnell Prismatic Rangefinders back in the early 70's.

Thank God Technology has advanced!

I had one of those and never was any good with it. When the stw was a wildcat you could load a 140 gr sbt with too hot a load, sight it in 3" high at 100 and kill deer that looked tiny on 12×. Oh the old days!!!

 

[Orange Dust]

Back in those days I have been seen in bean fields with a buddy and a 100ft tape, planting flags at mpbr in a radius around each stand for whatever we were shooting that year, usually some stupid or insane wildcat. His flags were red and mine white. You just make do.