Barnes and Bullet Jump

[D.B. Cooper]

WOW! What a difference!

I've been loading/shooting Barnes TSX 85 grn HPBT in my 243 with a .050 bullet jump. (Barnes' suggested starting bullet jump.) and That got about 1.5 to 1.75" groups at 100 yards. That created an overly long COAL. On a lark, I loaded up some with the same projectile and power charge, but I loaded it to the Barnes manual specified COAL of 2.645, which dramatically increased the bullet jump to the lands. Groups immediately dropped to 3/4" at 100, 1" at 200, and 3" at 300. Amazing.

 

[SingleActionAndrew]

Thanks for sharing! What was the original COAL for comparison?

 

[old heeler]

Barnes has never posted that bullet jump will work in every rifle. This is what they post, your rifle may prefer a bullet jump of anywhere between (a minimum of) .050” up to .250” or more.

 

[barnfrog]

My best groups with the 80 grain TTSX have been with bullets seated around 0.100" off the lands. Just over 0.5" at 100 yards.

 

[murf]

bergers are the same way. they don't like to be close to the lands.

murf

 

[Dale Alan]

bergers are the same way. they don't like to be close to the lands.

murf

All gun/bullet combos are different , Picture is 5 shots @ 100 yards , Berger bullet jammed hard in the lands . If it has any jump at all groups open up .

 

[D.B. Cooper]

Thanks for sharing! What was the original COAL for comparison?

2.782. So, essentially, an additional 0.137 of bullet jump. (.187 total?)

 

[D.B. Cooper]

Barnes has never posted that bullet jump will work in every rifle. This is what they post, your rifle may prefer a bullet jump of anywhere between (a minimum of) .050” up to .250” or more.

Correct. It's in their data. I guess I didn't make that clear.