Choosing the right long range deer bullet....

Here is the lineup;


http://i58.photobucket.com/albums/g2...psxhtzok0n.jpg


From rom left to right;

Barnes 300 grain original, .291 BC

http://i58.photobucket.com/albums/g2...ps8mwhglvt.png

Barnes 300 grain .458 Socom TTSX, .236 BC

http://i58.photobucket.com/albums/g2...pst6fy8q9c.png

310 APB from ASG, .430 BC

http://i58.photobucket.com/albums/g2...ps9ejujgxu.png


I've done a bit of shooting with the 310 and 300 socom. The velocity shown is actual and the 310 shoots considerably flatter and slightly faster than the lighter socom. I tried annealing the socom to get better obturation but that was to no avail. I think that less bearing surface to the lands may account fo the difference in speed but that's just a guess. Accuracy was good though at just over an inch on the 300 yard target and single hole at 100.

I am am hoping I'll see 2750 with the Original.

I intend to set up three targets at 1,2,300 yards and put three shots into each to compare trajectories and groups. I will post results.

Good lord man that is impressive - any of them - but especially that 310. How's the recoil on a rig like that?

Those are some excellent results at that range...
Pretty cool stuff

Quote:

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Originally Posted by Species8472

Good lord man that is impressive - any of them - but especially that 310. How's the recoil on a rig like that?

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Thanks what surprises me is how close the claimed numbers of the 310 are to actual that I'm getting. Velocity is very close to table at 100 and so is drop at 300.

For recoil, here is what the calculator says;

Recoil
Input Data
Charge Weight:	70.0 gr	Muzzle Velocity:	2740.0 ft/s
Firearm Weight:	12.0 lb	Bullet Weight:	310.0 gr
Output Data
Recoil Velocity:	14.0 ft/s	Recoil Energy:	36.7 ft•lbs
Recoil Impulse:	5.2 lb•s

Considering a 12 gauge 3 inch shell with 7.5 pound gun pumps out over 50, it isn't that bad....

Quote:

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Originally Posted by fratri

Those are some excellent results at that range...
Pretty cool stuff

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Thanks. I may also try an FTX 250 grain that would be 2930 fps if I can figure out how to swage it without breaking my press lever like I did last time.... I'll stick with these three above for this round.

I'm not sure I am understanding correctly - is the BC of the leftmost bullet higher than the BC of the middle bullet? I wouldn't expect that (short, stubby bullet, flat tip, flat base).
You said you are shooting ONE inch at 300 yards? That is crazy! Is this with the smokeless muzzle loader you recently built and described in a thread?

Sounds like fun Jack. Maybe the Barnes being solid copper boogered up the annealing attempt.

I'm guessing with a flat base(and inside 400-500 yards) yds and the pointed meplat and long ogive, the APB will be very accurate easy to 300 yds.

Barnes makes excellent bullets however and it should be close in accuracy but king in expansion.

Also, it would be interesting to see the velocities at intervals out to 100+ yards in order to calculate the B.C. just to see how honest the manufacturers are.

Have fun, can't wait to see you results.

Quote:

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Originally Posted by rf2

I'm not sure I am understanding correctly - is the BC of the leftmost bullet higher than the BC of the middle bullet? I wouldn't expect that (short, stubby bullet, flat tip, flat base).
You said you are shooting ONE inch at 300 yards? That is crazy! Is this with the smokeless muzzle loader you recently built and described in a thread?

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Yes according to the manufacturer the original shows a higher BC. I am having a hard time believing it myself. It's been around a heck of a long time - maybe BS numbers from years past?

Yes the last bullets shot at 300 were a tad under an inch using the smokeless build. Velocity spread was 1 fps over three shots. That's ridiculous. Going back to do the test as described above and compare. If it's repeatable the socom may be the winner. The one hole group at 100 was around .25". As a hunting round I want it in the dirt at 500 as well.

Quote:

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Originally Posted by skypilot

Sounds like fun Jack. Maybe the Barnes being solid copper boogered up the annealing attempt.

I'm guessing with a flat base(and inside 400-500 yards) yds and the pointed meplat and long ogive, the APB will be very accurate easy to 300 yds.

Barnes makes excellent bullets however and it should be close in accuracy but king in expansion.

Also, it would be interesting to see the velocities at intervals out to 100+ yards in order to calculate the B.C. just to see how honest the manufacturers are.

Have fun, can't wait to see you results.

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You might be right about annealing. I don't honestly know. A fellow online did an expansion test on the socom and it was very impressive.

You are are on the pin with the 310's.
The 310's are considerably more expensive (3X) but accuracy is ridiculous. I've ordered 50 more from Luke.

I need two of those velocity cams that are available but my budget is almost dead for guns this year.....

Anybody got a couple they want to sell?

Quote:

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Originally Posted by Big Jack

Yes according to the manufacturer the original shows a higher BC. I am having a hard time believing it myself. It's been around a heck of a long time - maybe BS numbers from years past?

Yes the last bullets shot at 300 were a tad under an inch using the smokeless build. Velocity spread was 1 fps over three shots. That's ridiculous. Going back to do the test as described above and compare. If it's repeatable the socom may be the winner. The one hole group at 100 was around .25". As a hunting round I want it in the dirt at 500 as well.



You might be right about annealing. I don't honestly know. A fellow online did an expansion test on the socom and it was very impressive.

You are are on the pin with the 310's.
The 310's are considerably more expensive (3X) but accuracy is ridiculous. I've ordered 50 more from Luke.

I need two of those velocity cams that are available but my budget is almost dead for guns this year.....

Anybody got a couple they want to sell?

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I wonder if you could make any video camera work that you could set the frame rate manually(like 30 frames per second). That would be 66 fps per frame on a 2000 fps bullet at 300 yds with a beginning MV of ~2500.

I have cameras that might wok. Just not sure if we could capture what we need to calculate downrange velocity with them. The Labradar does grab several velocities up to 100 yards right?

Anyway not trying to get in your experiment, just let me know if I can be of any help as I'm only a couple miles away.

Quote:

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Originally Posted by skypilot

I wonder if you could make any video camera work that you could set the frame rate manually(like 30 frames per second). That would be 66 fps per frame on a 2000 fps bullet at 300 yds with a beginning MV of ~2500.

I have cameras that might wok. Just not sure if we could capture what we need to calculate downrange velocity with them. The Labradar does grab several velocities up to 100 yards right?

Anyway not trying to get in your experiment, just let me know if I can be of any help as I'm only a couple miles away.

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Hi

I may be able to track that bullet to 150 with the labradar.

This Saturday's test will be as short as possible due to time constraints but if you feel like giving this a more in depth look let's pick a day and give it a try. Your knowledge would be appreciated!

We really could try any rifle at the same....

1" at 300 yards with a Muzzleloader, sounds like a world record