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4 years 34 weeks ago, 7:46 PM

ronin1604

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I'm trying to replicate some of my factory loads, but can't achieve the same muzzle velocity without exceeding max charge. I'm really close though (80fps slower). How much difference in the real world will this make? I'm pushing a 160 gn bullet at 2705 (+\- 5fps), my target was same round at 2785.

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4 years 34 weeks ago, 8:37 PM

Vaquero

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powder

Are you using the same powder as factory?
Burn rate makes a big difference.

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4 years 34 weeks ago, 8:55 PM

ronin1604

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Vaquero

Not sure what the factory powder is. Just know muzzle velocity.

__________________ "...He that hath no sword, let him sell his garment and buy one." - Jesus, Luke 22:36
4 years 34 weeks ago, 9:53 PM

Ishootdaily

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Ronin

what ammunition brand and bullet?

No sir, he fell into that bullet... Never argue with a stupid person. They'll just drag you down to their level and beat you with experience!!
4 years 34 weeks ago, 10:26 PM

ronin1604

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ISD

The bullets are Hornady FTX. The bullet is 5 gr heavier than the factory loads I normally shoot. Guess I'll have to quit being lazy and crunch the numbers on a ballistic program. Lol!

__________________ "...He that hath no sword, let him sell his garment and buy one." - Jesus, Luke 22:36
4 years 34 weeks ago, 10:35 PM

Ishootdaily

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Ronin

from everything I can find on the FTX, 2600 fps in .308 is pushing it, over that is guess work on if the jacket is going to peal off the round.

No sir, he fell into that bullet... Never argue with a stupid person. They'll just drag you down to their level and beat you with experience!!
4 years 34 weeks ago, 10:38 PM

ronin1604

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Well...

One way to find out. Lol! But the loads I'm using are from hornady, and my chrono is supporting their numbers.

__________________ "...He that hath no sword, let him sell his garment and buy one." - Jesus, Luke 22:36
4 years 34 weeks ago, 10:41 PM

Ishootdaily

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Ronin

thats cool, I just went to Natchez and they list the fps starting at 1800 - 3000 fps. So...

Damn, 160 gr 3000 fps, make one hell of a dent in what it hits thats for sure.

No sir, he fell into that bullet... Never argue with a stupid person. They'll just drag you down to their level and beat you with experience!!
4 years 34 weeks ago, 10:47 PM

Ishootdaily

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http://www.reloadbench.com/main.html

Might find some info here

No sir, he fell into that bullet... Never argue with a stupid person. They'll just drag you down to their level and beat you with experience!!
4 years 34 weeks ago, 8:29 AM

LLE

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ISD-- Thanks for

the heads up on this site. I already printed some great targets.

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4 years 34 weeks ago, 10:38 PM

Ishootdaily

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I like a few of the different targets on there also.

I'll have to boot up one of the other systems which has a load of links on it for Targets, Competitive Layouts for target stations and other stuff like it.

No sir, he fell into that bullet... Never argue with a stupid person. They'll just drag you down to their level and beat you with experience!!
4 years 33 weeks ago, 2:44 PM

Saint J.M. Browning

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reloading bench site

That's a great site, ISD. Thanks for posting it. It's now bookmarked.

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4 years 34 weeks ago, 10:47 PM

ronin1604

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I'll be sure...

I'll be sure to let you know how they do. Made a small batch up to test accuracy, and if they pass, will take hunting.

__________________ "...He that hath no sword, let him sell his garment and buy one." - Jesus, Luke 22:36
4 years 33 weeks ago, 8:43 AM

TXLUCKYGUY

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factory data

Factory ballistic data FYIs:

1. Many factories shoot from a test barrel, not an actual production firearm barrel. Even 1" of barrel length or twist rate can affect MV.

2. Even "good" factory ammo has +/-50fps spreads as acceptable. Lot to lot variations can be even greater.

3. Altitude, temp, all these things can affect velocity noise and pressure. If you're within 100fps of a factory catalog listing, you're closer than you think.

4. Most bullets have a velocity envelope that the factory endorses....many bullets perform acceptably well beyond that envelope, some don't do so well even at factory spec.

My experience is that the folks at Hornady are pretty forthcoming about their stuff and have no problem chatting about it if you find someone in their phone tree that's not busy.

4 years 33 weeks ago, 12:01 PM

greg az

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Ronin..

this is related to TXLUCKY's statement on factory ammo numbers...

I remember reading a quote years ago in guns and ammo about this.. ie the factories numbers being almost unobtainable by re loaders, and how they managed to do this, which was "primarily" by using special barrels..

The author (can't remember) had a re loading column every month.. Bottom line is he managed to duplicate the factories MV on a load, and it was a big deal..

I remember his quote justifying ammo manufactures policies all most verbatim, as i figured this was probably added after an editor reviewed, and had to do with advertising dollars...

"you can see the customer standing at the counter comparing muzzle velocities, obviously if the bullet weight is close, that same the customer will take the higher velocity round..

a man has to hold his word, hold his beliefs, and hold a good sight picture.
4 years 33 weeks ago, 2:45 PM

Saint J.M. Browning

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Ronin

Not that I have any experience in this area, but I think 80fps short on 5 more grains isn't bad at all.

"I don't think Hank done it this way" - Waylon

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