Oval Bullet Holes

Phil,

"I'm not trying to convince you of anything."

"Believe what you like."


??????



I'm just asking your opinion Phil......:eek:


al
 
Excuse me, but does any of this have to do with oval bullet holes shooting a .308?:confused::confused:
 
Oval

Yes have someone shoot your rilfe at least 500 yards 600 is perfect and (through a good spotting scope) watch the trace........should explain everything. They never fly point on looks like a broken boat propeller.;)
 
I have shot it at 500 and 600. My last question concerned shooting 210 Bergers at 2800 vs. 2950. I don't think that will happen with a .308. Does anyone have any experience with a .308 at 1,000 yards? What powders, loads and bullets will keep it supersonic at that range? I know its easy to keep bullets supersonic at that range with a 300 mag.:)
 
308 at 1000

175 SMK and 45 grains of Varget will do it. (drop at least 10% and work up) 155 SMK Palma with more powder will also. I've shot about 500 of the Lapua 155's and my X count goes down. Plenty of bullets you have to really smack a 308 to get anything at 1000.
 
Mark IV said:
I have shot it at 500 and 600. My last question concerned shooting 210 Bergers at 2800 vs. 2950. I don't think that will happen with a .308. Does anyone have any experience with a .308 at 1,000 yards? What powders, loads and bullets will keep it supersonic at that range? I know its easy to keep bullets supersonic at that range with a 300 mag.:)
Click to expand...

I shot 44 grains of 4064 in my .308 with the 175 grain bergers and had a great time learning some wind basics. Ron Tilley
 
Al,

I'll probably take a spank'n for continuing to be what seems considered off topic, even though I think it's on topic. The 210 vs a 168 both run into the same troubles, just at differing mv's.

What you've seen at 600 doesn't really apply much at 1K. See, even at 2600 mv, that bullet going just 600 yards wont' approach the speed of sound. It's well over.

My rule of thumb has been for years that any bullet for competition should stay above 1450fps at the target. when they go a little slower than that and it gets windy, you sometimes get huge groups. it's also tough to score because small wind changes just make the group too big for you to know where it's center is.

Tell ya what, drop your 600 yard load down to where the bullet is getting to the target at 1450 or 1500 and see how it shoots. Now you know where a WSM shooter is at 1K when they back the load off a bit. It might shoot ok on a decent day, and it might shoot really bad on a not so nice day.
 
155 SMK 3000 fps at 1000 yards

Shot these at our Monday evening 1000 yard league out of my Palma rifle these are flying pretty good. ww brass federal 210gm 155 Smk palma 45.5 H4895
ww brass federal 210gm 155 smk palma 47 grains varget oal 2.830

32 inch 1/12 5R barrel
 

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Very nice. Do you prefer Varget or 4895 in the .308. Also, what are your thoughts on 4061? :D
 
You mean 4064? I use 46.4 gr Varget and a MOLY coated 155 SMK in my Palma gun. Bare bullets will make sticky cases(xs pressure) for the same load. I made the mistake of using 168 gr factory Fed Match for my first Palma match. OK until 1000, when the pit crew went nuts spotting all the oval holes in the corners of the target. Goes subsonic, and wobbles after 900 yds in a 308. 175 or 155 are OK for the 308.
 
Varget Rules

Most of my shooting is during Oak Ridge Sportsman Association's Monday evening league. I keep the same 60 pieces of brass running until they will not hold a primer. (Palma loads are stiff.... not stupid and after 15 to 20 reloads its time to move on) Cleaned the rifle and shot two ten shot groups today and got my vertical down to five inches.......sweet. Winchester brass average weight 162 grains, 47 grains varget, Federal 210gm, 155 SMK palma 2978 fps sd 4:D
 
4Mesh said:
Al,

I'll probably take a spank'n for continuing to be what seems considered off topic, even though I think it's on topic. The 210 vs a 168 both run into the same troubles, just at differing mv's.

What you've seen at 600 doesn't really apply much at 1K. See, even at 2600 mv, that bullet going just 600 yards wont' approach the speed of sound. It's well over.

My rule of thumb has been for years that any bullet for competition should stay above 1450fps at the target. when they go a little slower than that and it gets windy, you sometimes get huge groups. it's also tough to score because small wind changes just make the group too big for you to know where it's center is.

Tell ya what, drop your 600 yard load down to where the bullet is getting to the target at 1450 or 1500 and see how it shoots. Now you know where a WSM shooter is at 1K when they back the load off a bit. It might shoot ok on a decent day, and it might shoot really bad on a not so nice day.
Click to expand...


Ahhh HAHHHH :)

NOW the light begins to shine. Thanks for a logical explanation, I wasn't factoring in the fact that the bullets "may" be nearing transsonic @1K.

al
 
4Mesh said:
Do you know what twist that barrel is?
Click to expand...
Gentlemen,

The problem is NOT an issue of twist rate. The Sierra 168 grain .30 caliber projectile is DYNAMICALLY unstable in flight, and this results in erratic flight behavior near Mach 1. This behavior was the subject of a report by Aberdeen Prooving Ground's Ballistics Research Laboratory, so it isn't idle speculation.

For a .308 fired at ~2650 FPS, the behavior typically occurs between 900 to 1000 yards. As others have said, the cure is to either boost the MV, or switch bullets.
 
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