Sighting in 450 bushmaster

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Sighting in 450 bushmaster

Postby pauleberly » Wed Jul 26, 2017 9:11 am

I hunt up in the mountains. I usually take a shot that is 50 yards or less, but every now and then are some opportunity for 100 yards.

How would you guys sight your rifle in? If It was sighted in at 100 yards and I shot at 50, Could I hold on lungs and still be in the kill zone?

Would I be better off sighting in for 50 yards, and holding a little high at 100?

Any input would be greatly appreciated

Anyone had any luck with any BDR scopes?
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Re: Sighting in 450 bushmaster

Postby plant_one » Wed Jul 26, 2017 10:37 am

sight it for 100.

with a 100 yd zero you've got a +/- 2½ from 0-150 yds. point and squeeze simplicity.
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Re: Sighting in 450 bushmaster

Postby Al in Mi » Wed Jul 26, 2017 12:49 pm

plant_one wrote:sight it for 100.

with a 100 yd zero you've got a +/- 2½ from 0-150 yds. point and squeeze simplicity.


yep, that's how mine is set up.
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Re: Sighting in 450 bushmaster

Postby Texas Sheepdawg » Wed Jul 26, 2017 1:13 pm

Mine hits about 2" high at 100. That gives me just a little bit of forgiveness at 200.
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Re: Sighting in 450 bushmaster

Postby pauleberly » Wed Jul 26, 2017 2:49 pm

I actually called up hornady and asked them about the same question.

He said if I sighted it in at 50 yards

at 75 yards it would be .3 inchs low

at 100 yards 1 inch low

Honestly I will probably never even shoot it at 100 yards, because the way my mountain is set up it would be almost impossible to shoot that unless im shooting at a 80 degree incline lol.
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Re: Sighting in 450 bushmaster

Postby Jim in Houston » Wed Jul 26, 2017 4:13 pm

You can run Hornady's ballistic calculator for the bullet you are using. Try both 100 yard and 50 yard zeros. For mine, I have set up for a 50 yard zero, I am :

    1" high at 100
    1" low at 150
    5" low at 200
    13" low at 250, and
    25" low at 300.

Those are round numbers. I usually can't do the tenths of an inch beyond 50 yards anyway.
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Re: Sighting in 450 bushmaster

Postby pauleberly » Thu Jul 27, 2017 4:26 pm

Seems like this bullet has a really nice flat trajectory (nothing else to compare it to)

Basically from what the guy at hornady told me, if I sight it in at 50 and shoot anywhere to 100 yards, I can basically just hold my shot dead on and it will hit.
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Re: Sighting in 450 bushmaster

Postby Hoot » Thu Jul 27, 2017 9:53 pm

pauleberly wrote:Seems like this bullet has a really nice flat trajectory (nothing else to compare it to)

Basically from what the guy at hornady told me, if I sight it in at 50 and shoot anywhere to 100 yards, I can basically just hold my shot dead on and it will hit.


Don't confuse trajectory with PBR. The 200gr FTX traveling at 2500fps, like all the FTX family in this caliber, shoots in a great rainbow arc when you get out into the range where trajectory comes into play. In the case of the 200gr FTX sighted in at 100 yds, the POI at 500 yds is something like -14.3 ft. The .30/06 shooting a bullet of the same weight and same velocity, but with its higher BC has a POI something like -5.4 ft at 500 yds. That's flatter shooting. Both have nearly identical Point Blank Range performance between 50 and 100 yds. Just an FYI.

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Re: Sighting in 450 bushmaster

Postby pauleberly » Fri Jul 28, 2017 3:04 pm

Good information HOOT. And my knowledge on this is very limited. I have only recently started reloading, and only somewhat understand all of the different terms and how it all plays together.

I will probably be shooting the 250gr bullets for deer loads. I also did not know that the the 450 bushmaster is a .452 bullet, which is the same as the 454 casull. Is there still some difference, Or could I load the 300 grain XTP into my 450 bushmaster brass?
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Re: Sighting in 450 bushmaster

Postby plant_one » Fri Jul 28, 2017 11:59 pm

the 300 xtp mag (Hornady Item #45235 ) is one of the heavy thumping bullets for this caliber.


you'll find load data in hornady's 9th on page 644 for it.

max loads of lilgun in my 20" upper were just a smidge over 2000 FPS, but accuracy was minute of garbage can. at around a smidge over 1800 fps they were grouping ok.

that 2000 FPS load will let you know you're behind a big bore ar :mrgreen:
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