Deep Throat

[powerspc]

Posting in the stupid questions section;

Aside for a minute caliber, rifle, etc. because I believe this question to be truly generic.

You’re using a magazine fed, bolt action rifle. This rifle likes your ELD bullet .002 off the lands and shoots great, however, that makes the C.O.L. too long to fit in your CIP magazine requiring you to hand feed. So you seat the bullet just deep enough to clear the mag (.026 off the lands) and now the rifle shoots like garbage.

What is your next first option?

Change bullet? Resign yourself to hand feeding? Try seating further off the lands? Or...?

 

[Greg Langelius *]

In my case, hand feeding. Up until recently, I shot F Class competitively and chose to hand feed anyway. These days, post-competition, I continue employing the technique out of habit.

Another approach might be to find a bullet with an ogive that has a shorter radius. For example, I started shooting the 260 in 2001, and back then, the reigning bullet was the 140SMK, which is shorter than the newer A-Max/ELD bullets, and has a fuller ogive curve. I found that it is more magazine friendly, and delivers a (somewhat) shorter jump. It would be my choice for a 260 AR because of magazine length constriction.

Seating deeper still allows the option to redevelop the load to do its best at the shorter OAL.

Seriously, I found that my weaknesses in competitive shooting seldom had to do with OAL.

Greg

 

[memilanuk]

You might try seating the bullet even further off the lands - it might surprise you

Some years back, Berger addressed this:

http://www.bergerbullets.com/getting-the-best-precision-and-accuracy-from-vld-bullets-in-your-rifle/

 

[smoooth1]

Huh? When I saw the title, I Thought this post was going to be about something completely different ...?

 

[Sheldon N]

Change bullet? Resign yourself to hand feeding? Try seating further off the lands? Or...?

Agree with the advice to try other seating depths in the mag length range. I had a rifle with a super long throat where I was jumping the bullets a ton. I started at max mag length which shot pretty poorly, but working backwards with even more jump found a node which shot great.

 

[Spblademaker]

Not the fap material I though it was going to be. But still good.

 

[Sogan]

You got me.

 

[powerspc]

First apologies for the title (not really, I wanted as many looks/opinions as possible?). Second, thanks for the replies; seating deeper seems to be the best next step and gives me something to at least experiment with and hopefully learn something from!

 

[TheGerman]

Showed up very excited.

Left very disappointed.

 

[powerspc]

Again, sorry But Jesus I hope we're not dating ourselves as well; do you realize that film came out 46 years ago!!!

 

[Nomad_chew]

New barrel or recut with less freebore/throat?
Obviously, that's an expensive option. Try different seating depths and other bullets.

 

[eklarsen]

Keep testing seating even further, you will find a good jump that shoots well.

 

[Supersubes]

If I had a bullet that needed to be .002 off the lands, I’d consider that the problem. Screw that!

If you’re comfy with your measurements(and .002 is correct), you may have concentricity issues with the ammo. When you’re working that close to the lands, you’re essentially in a jammed situation if the ammo isnt straight.

I’ve never met an ELD, in any diameter/weight, that needed to be close to the lands. Keep adjusting the jump till you find what it likes. You can do generous increments as well, say .010. You’ll zero in to a range it likes in fewer rounds, and less time.

 

[powerspc]

I moved out in .020 increments and seem to be getting decent results at .060 off the lands. ES:19 / SD:10.38 / .5 MOA groups / 2757 fps. 91.0 gr Retumbo, Fed215, 27" Bartlein Barrel. I'm thinking good enough...

 

[clcustom1911]

Damn click bait title! Foiled again!!

 

[candyx]

Have no idea if he even owns a gun....

 

[Precisiondada]

Too bad there isn’t a view’s counter on threads. This one will probably be pretty high up there, I took the bait...