BT vs. Flat bottom bullets

[NobullSKS]

Target reloading
I've been trying to stick to BT because that's what I heard is ideal, but not impressed yet. After running out of what I made specifically for this rifle, I used some leftover loads from a different rifle. .308. The flat bottom performing outstandingly right off the bat. So I googled the VERSES and found this. What do you think?

Boattail vs. Flat Base Projectiles - Guns and Ammo

The shape at the tail end of a projectile, whether it's boattail or flat base, can have serious effects on your handloads.

www.gunsandammo.com

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[Certaindeaf]

Target reloading
I've been trying to stick to BT because that's what I heard is ideal, but not impressed yet. After running out of what I made specifically for this rifle, I used some leftover loads from a different rifle. .308. The flat bottom performing outstandingly right off the bat. So I googled the VERSES and found this. What do you think?

Boattail vs. Flat Base Projectiles - Guns and Ammo

The shape at the tail end of a projectile, whether it's boattail or flat base, can have serious effects on your handloads.

www.gunsandammo.com

I always heard that there's zero benefit in using boat tails inside of 300 yards. Throat wear is about double using boat tails compared to flat base also.

 

[DizzyJ]

Boat tail projectiles generally pay off for longer ranges due to the aerodynamics. Flat base stabilize faster and are generally accepted to be better for closer ranges.

The only rub is flat based bullets can be easier to damage when seating. Damaging the base of the bullet can be detrimental to accuracy.

 

[No_Regerts]

Boat tail projectiles generally pay off for longer ranges due to the aerodynamics. Flat base stabilize faster and are generally accepted to be better for closer ranges.

The only rub is flat based bullets can be easier to damage when seating. Damaging the base of the bullet can be detrimental to accuracy.

Don't just shove it in. Use some finesse.

 

[DizzyJ]

Don't just shove it in. Use some finesse.

Oh trust me. I know. Just stating what I've found to be the case. Bullets need to be absolutely straight going in, good chamfer, etc. Can't get away with as much as with a boat tail.

 

[No_Regerts]

Oh trust me. I know. Just stating what I've found to be the case. Bullets need to be absolutely straight going in, good chamfer, etc. Can't get away with as much as with a boat tail.

Would you have played along with the joke if I said to spit on it?

 

[DizzyJ]

Would you have played along with the joke if I said to spit on it?

I was gonna say "that's what she said"

But…..

 

[bionic knees]

boat tail all day every day, much better coefficient, better aerodynamics. been shooting BT's for 40 years.

 

[Pepe-lepew]

boat tail all day every day, much better coefficient, better aerodynamics. been shooting BT's for 40 years.

I totally agree at 600 yards. At 200 yards those things don't matter much at all. In my M1's and 1903's, Speer TNT 125gr flat base bullets shoot about 1/2 moa more accurate, use less powder, have less recoil and cost 1/2 as much as 168 BTHP bullets. While they are flat base, the benefits are mostly because of the weight.

 

[titsonritz]

I was gonna say "that's what she said"

But…..

If you didn't I would have.

 

[saxon]

If you didn't I would have.

"that's what" she said.

 

[No_Regerts]

"that's what" she said.

That's what she/her said

 

[titsonritz]

"that's what" she said.

That's what "she" said.

 

[titsonritz]

That's what she/her said

Beat to the punch.

 

[DizzyJ]

Here's Bryan Litz's take on it.

 

[bionic knees]

there is a reason that most match ammo is HPBT

 

[ron]

I totally agree at 600 yards. At 200 yards those things don't matter much at all. In my M1's and 1903's, Speer TNT 125gr flat base bullets shoot about 1/2 moa more accurate, use less powder, have less recoil and cost 1/2 as much as 168 BTHP bullets. While they are flat base, the benefits are mostly because of the weight.

I have found the flat bottom bullets a little better accuracy with old M1s at 200 yards or less compared to boat tails.
I also use the Speer 125 TNT for the M1.

boat tail all day every day, much better coefficient, better aerodynamics. been shooting BT's for 40 years.

Ever try a flat bottom match bullet? The 53 grain Sierra Matchking is a flat bottom bullet compared
to there 52 grain Sierra Matchking is a boat tail. The 53 grain flat bottom will shoot a tighter groups out
to 200 yards. Especially noticeable improvement in a worn barrel. FYI the 52 and 53 SMK are super accurate
in any twist rate barrel, 1/7, 1/8 or 1/9 twist rate.

 

[tac]

Both the 7x57 Mauser and .303 British started off with flat-based bullet.

Both my 7mm Mausers shoot 175gr FB bullets with very acceptable accuracy, thanks to the generoushoodship of of a postist on this forum.

 

[NobullSKS]

I totally agree at 600 yards. At 200 yards those things don't matter much at all. In my M1's and 1903's, Speer TNT 125gr flat base bullets shoot about 1/2 moa more accurate, use less powder, have less recoil and cost 1/2 as much as 168 BTHP bullets. While they are flat base, the benefits are mostly because of the weight.

This is where I'm at 200yrds….. I didn't have enough ammo to try and continue to get sub MOA. But the results were night and day to BT

 

[Stomper]

While they are flat base, the benefits are mostly because of the weight.

Flat-bottomed rounds you make the rockin' world go round!