Im well aware of the Newberry round robin strategy during load development, but does anyone do this for seating depth or does everyone shoot 3-5 rnd groups? Please elaborate on what has worked best for you.
Thanks
Thanks
- Thread starter clrems77
- Start date
I shoot 3 5rd groups , in my experience it has been obvious. if the group is tightening up as seating depth increases.
For seating depth, with most bullets I try to get as close to the lands as possible and call it good. With monometal bullets such as Barnes bullets, I let them jump a bit.
As far as shots in a group goes, I use 3 shot groups. Understand that a 3 shot group is much less statistically powerful than is a 5 shot group so, if you get a real good 3 shot group, don't assume the load is fantastic until you do more testing. On the other hand, if you get a bad 3 shot group, you can probably safely assume that the load isn't that good and can go on to something else.
You can save a lot of ammo by shooting 3 shot groups for testing rather than 5 shot groups.
As far as shots in a group goes, I use 3 shot groups. Understand that a 3 shot group is much less statistically powerful than is a 5 shot group so, if you get a real good 3 shot group, don't assume the load is fantastic until you do more testing. On the other hand, if you get a bad 3 shot group, you can probably safely assume that the load isn't that good and can go on to something else.
You can save a lot of ammo by shooting 3 shot groups for testing rather than 5 shot groups.
I do test bunches in groups of 5. Also, I find where I can seat the bullet out to touch the lands(or magwell) and step back 0.010" till I get to 0.050" of the lands (or mag length). I've found most of the right seating depths in that general area.
I seat 'em long, then take a seating die with micrometer-type top in a Lee hand press to the range, experimenting at every 5 thou.
I do. I see a lot of guys who use lead sled type rests for developing loads. I suppose it's alright if you're working up hunting loads and such, but!!! There's nothing to give for that recoil, thus causing the muzzle/Forend to jump off the the front bag. This is just what I have experienced. Myself, I use a Caldwell Rock with an Owl Ear Front Bag and a flat bottom Owl Ear rear bag.
