Hornady Factory Ammo Ballistics Chart (2017)

[User00040]

Just handy to get a rough idea...



What amazes me is how close some supposedly 'flat shooting' cartridges are to 'loopy' ones at distance...

The faster you throw a projectile, the more it wants to slow down!

 

[Foxyboy43]

Interesting stuff - thank you.

 

[Longstrider]

Good reference but ... as usual they've done what every manufacturer seems to do and used barrels that are w-a-y longer than 99% of sporting rifles out there in order to show higher MV's.

As a quick straw poll .. how many of the SD membership are using a 26" barrelled .204 ??

 

[Foxyboy43]

They all do - to show the ammo in the best possible light. From memory ( risky) for each inch less barrel just subtract 30 fps - near enough to give you what you want.

 

[ChesterP]

Good reference but ... as usual they've done what every manufacturer seems to do and used barrels that are w-a-y longer than 99% of sporting rifles out there in order to show higher MV's.

As a quick straw poll .. how many of the SD membership are using a 26" barrelled .204 ??

I'm using a 26" .223. Worth the extra weight for the slight MV increase without going silly on pressures.

 

[ChesterP]

Just handy to get a rough idea...



What amazes me is how close some supposedly 'flat shooting' cartridges are to 'loopy' ones at distance...

The faster you throw a projectile, the more it wants to slow down!

Yes, well noted. It also surprisingly means that wind drift for the first few hundred metres can be more as a percentage of total wind drift over distance than for a slower round due to effects of gyro and offset vector (Hornady have published an excellent video article on this area of external ballistics which is a real eye opener).

 

[25 Sharps]

Good reference but ... as usual they've done what every manufacturer seems to do and used barrels that are w-a-y longer than 99% of sporting rifles out there in order to show higher MV's.

As a quick straw poll .. how many of the SD membership are using a 26" barrelled .204 ??

My .223 AI was 24” until I got it rethreaded, now it’s 23.5”, 25-45 is 25” and my 6.5CM, .308 and .280 all wear on 26” tubes. All used with muzzle cans.

If people choose to limit the velocity of their rifles by using short barrels that’s down to them.