We were talking about and trying a while back?
I came across a bit of information about that and some hunting stories.
"Bushmaster Firearms and Hornady, fans of the AR looking to take power to the next level have a factory-produced option in the .450 Bushmaster. A 20-in.-barreled rifle and a 16-in.-barreled carbine in the beefy cartridge"
This is the gun that the 250FTX was designed for if my info is correct
some of the information[I assume its correct] that was included was that it takes 2200 FPS for this bullet to expand properly.
Granting that it is supposed to get expansion to about 5/8" and roughly 22 inches penetration according to the story it did a number on a quite a few boars.
I thought some of you might find this interesting enough to comment on. Lee

Semisane verified that awhile back. So that being the worst bullet i ever used could change now. I definitely was not shooting it that fast. Thanks again for the info.

According to the chart I have you would need 160gr 777/2f to reach 2200fps with a 250 gr bullet.

Charlie

No problem, I quit using that because of the crud ring when BH came out and 135 gr of BH which according to my strain gage gives the same pressure as 150 gr RS also give me 2300 FPS and 1.25 inch groups with the FTX. I have not use them on any animals yet, but what testing I have done with wet news paper shows them opening up. I am just a bit leery of them because Tom had trouble with them and I do not know what load he was using. Lee

110grns of BH209 is all i used Lee. That's pretty anemic for what they are calling for.

Just curious, but why use them if you're leery about them? Why not just use something you know is dependable?

It's worth mentioning that no bullet is designed to take game at the muzzle. There is ALWAYS a range of velocity where the bullet should expand.

The muzzle velocity of a Bushmaster is about 2150-2200 fps. This is only the MUZZLE velocity, and not the velocity you need to achieve to see the bullet perform. A bullet designed for such a cartridge should typically be expected to have a performance range down to 1600-1800 fps, depending upon the specific purpose.

The real design factor is the impact velocity at the range intended. This is why you will typically see handgun cartridges loaded with bullets designed to perform near MV, but rifle bullets are often designed not to slow to their optimal expansion range until over 100-200 yards -- leading to exploding or fragmenting bullets if you shoot an animal too close.

Even if you can't reach the MV of a Bushmaster, it simply means that the furthest range you can expect acceptable performance is shorter fired from a ML than from an AR. For shots less than 100 yards, if you can achieve a MV of around 2000 fps, you should see the performance the bullet was intended to deliver.

With regards to the 250 FTX, I'm not sure what the rationale for interest in it is over a SW which is designed specifically for a ML unless you feel you've had over-expansion issues with the 250SW like some have. Other members of the FTX line offer unique advantages not met by current offerings.

Given the types of ranges I have heard in FTX ads, either Hornady is misleading and encouraging use beyond the design parameters of their bullets, or most of them should perform just fine in MLs out to 100-150 yds. I withhold opinion until I have shot more than targets with them, it's all hypothetical until I shoot at LEAST 3-4 deer with them.

SW, well for one thing I thought they would be pretty much the same as a Shock Wave when they came out, and much better priced in quantity so I bought 500in a batch after I tested the first box for accuracy. They do make an excellant pratice bullet as they are accurate over a wide range of loads. Also since bullets are difficult to obtain right now and I have over 500 of them I might as well check them out.
They are very accurate and I am inclined to testing things any, way its sort of a hobbie.