| Powered by phpBay Pro |
Does a bullet's seating depth in the cartridge effect accuracy? ?
My 7mm-08 is a great gun for accuracy with it's 120 grain hollow points, but im wanting to reload larger (170) grain bullets for elk, and they're a bit longer than my 120's. --------does the seating depth of the bullet effect accuracy? how can i tell that the bullet is seated at the right depth? will longer bullets allow less powder charge in the cartridge?-------
i'm shooting long distances at varmints with the 120's, how can i get the accuracy better, other than keeping my rounds consistent, i'm talking overall length, seating depth...
----------------------------------------------------go into detail on what you meant when you said putting the bullet closer to the lands and grooves would cause jamming. i do kinda need pinpoint accuracy too.
-------------------------------------------------------
I am a reloading instructor.
Yes. Bullet seating depth is one thing that aids accuracy. First - keeping your seating depth uniform between projectiles of the same design and weight is important. Second - too much room between the projectile and lands and grooves of the barrel can detract from accuracy. (but - there are some exceptions to this. Weatherby ammo and barrels is just one).
You use a dial caliper to measure the cartridges OAL (overall length). Every reloader needs one of these - it is a mandatory tool. You use a coax-dial to measure concentricity - this is an advanced tool for match shooters.
You want to seat these heavy bullets to the depth shown in your reloading manual.
Although there are many tricks of the trade to increase accuracy of the cartridge - like presenting the bullet a bit closer to the rifling of the barrel - these tricks come at a price - and that is reliability. For a hunting rifle you don't need precision pinpoint accuracy - and - anything you do to the bullets/cartridge to get this will make the rifle subject to jamming. Benchrest and Match shooters have rules for disabled rifles......... elk, not so much. They just walk away.
Generally, as the bullet weight goes up - the charge comes down, or, you move into a more expensive powder.
As a handloader - the #1 thing you can do for accuracy is to be very consistant is how you make your ammo. Consistancy = Accuracy.
Hope this helps
Items Recently Purchased From This Site:
| Powered by phpBay Pro |