COL question

[BLOODHOUND]

I am loading for a remi 700p 338LM. It is brand new and I'm using new Hornady brass with 250 grain scenars. Lapua recommends a COL of 3.681 but I can't get it to 3.681 with the 250 grain scenar sitting on the lands. I am getting 3.655. Should I hold of the lands .020 or be in the lands? Any thoughts or input on this?

 

[ChrisGarrett]

Re: COL question

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 338BLOODHOUND</div><div class="ubbcode-body">I am loading for a remi 700p 338LM. It is brand new and I'm using new Hornady brass with 250 grain scenars. Lapua recommends a COL of 3.681 but I can't get it to 3.681 with the 250 grain scenar sitting on the lands. I am getting 3.655. Should I hold of the lands .020 or be in the lands? Any thoughts or input on this? </div></div>

Load some rounds .030" off, .015" off, 005" off, touching, and .005" into the lands and you tell us.

I don't know how long your mag box is, but I have to load to fit my Sako box and that's about 3.675" roughly. If I want to single load, I can go longer, obviously, but it shoots fine doing it this way.

Chris

 

[BLOODHOUND]

Re: COL question

right now i have ten loaded .020 off the lands just to get the barrel broke in, was going to load about 30 that way and then start on a recipe for it

 

[QRE23]

Re: COL question

Whenever you load "jammed" into the lands for the first time I would start with a reduced load. When you load "jammed" you're going to build more pressure or at the least it's going to change the pressure curve.

 

[BLOODHOUND]

Re: COL question

right thats what i was worried about i am doing a lighter load right now just to get the barrel broke in