..243 win seating depth vs jump space

hogan

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South west Wisconsin
With all the knowledge here I know somebody will be able to help.
I am trying to load a round for coyote hunting.
The bullet I am try to load is a Berger FBHP 69 gr. varmint.
The trouble I am having is the bullet has a long tapering ogive and when I get the jump space that I want it is only leaving minimal bullet seated into the neck.
Do I sacrifice my jump space by seating the bullet deeper, or is it safe to set the jump space where I want it with minimal seating depth?
Not sure if the powder is going to make a difference, but I am using IMR 4064.
 
Hard to say without more info, have you shot it with your 69 gr. bullets seated a bit deeper so you have good bullet alignment? You might be just fine. Sometimes its easy to get caught up in getting close to the lands when its not always necessary.
Those long, slender bullets can be a real problem seating out & still have good bullet purchase & alignment so you'll have to check them for run out with a dial indicator, etc. I'm guessing you're going to have to live with some bullet "jump" with those 69's.

Dick
 
Also they need to be short enough to feed from the magazine.
Weatherby rifles have a long free bore that require quite a bit of bullet jump. Most of them are very accurate. I would want my bullets well supported in the case and feed well from the magazine over the small amount of accuracy gain that might be gained by seating the bullet close to the rifling.
 
I think having the bullets seated deep enough to maintain good alignment during handling and cycling will do more for your hunting accuracy than being within 0.xx" from the lands.
 
The information I was given is some of the Berger bullets that have a long taper are designed to have a long jump. Normally we look for somewhere from 3 to 5 thousand jump but some of the Bergers like as much as 70. I would start with the normal overall length and work from that and not worry about the jump. The only experience I have with them is in a 308 cal. It work for that.
There are a few people on sniperforums.com that have a wealth of knowledge on this subject and were very helpful to me when I was working on my 308. They have taken the time to do the controlled load testing and will share the information.
 
a little jump is good when it comes to hunting bullets...if you ever have to pull a loaded round out of the rifle and it doesn't eject or the bullet stays jammed in the chamber spewing powder in the trigger, not a good situation. Coyote don't care what brand of bullet it gets kilt with, do a little testing and use what works...my opinion only.
 
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