minimun seating length

[twoodard]

Im going to be rebarreling a striker and building a rifle in 7mm08 AI coming up sometime. I will spec the reamer myself so I get what it is that I want not just the standard. both of these will not be mag fed so the length is not an issue. I would like to seat the bullets out as far as I can to maximize capacity. but short enough that I can chase the rifling if/as needed. im thinking of giving myself .015" for that. my question is how much of the bearing surface needs to be in the neck for reliable operation. these will both he hunting guns with higher neck tension but not loaded into the lands if i can help it. I would like to shoot the bergers out of them. looking at the 140's i stuck in one of the cases there is not a ton of bearing surface to begin with. any help would be great.

Tyler

 

[fullersson]

The bearing surface of you bullet should be seated at least the same width of bullet diameter. For example if you are shooting a .243/6mm bullet your seating depth should be at .243 into the case neck not counting the boattail. Hope this helps.

 

[sailhertoo]

Im going to be rebarreling a striker and building a rifle in 7mm08 AI coming up sometime. I will spec the reamer myself so I get what it is that I want not just the standard. both of these will not be mag fed so the length is not an issue. I would like to seat the bullets out as far as I can to maximize capacity. but short enough that I can chase the rifling if/as needed. im thinking of giving myself .015" for that. my question is how much of the bearing surface needs to be in the neck for reliable operation. these will both he hunting guns with higher neck tension but not loaded into the lands if i can help it. I would like to shoot the bergers out of them. looking at the 140's i stuck in one of the cases there is not a ton of bearing surface to begin with. any help would be great.


Tyler

If you do that they want last very long! he...he...


struck me as funny anyway...

 

[twoodard]

that is what I have heard in the past. ill use that as the minimum and seat them a little further to give me the room I am need to adjust.

 

[RJinTexas]

Tyler, Yes years ago it was preached that any bullet should be seated as deep as the bullet's dia. Most of my rifles are set up as single shots and used in the prairie dog towns but over the years I've never had any run out problems as long as I had at least one half of the bullet dia seated and didn't use a hard jam.

RJ

 

[twoodard]

more good info. I know I have the 120 BT's seated way out for my 15" encore in 7mm-08. never even considered what is far enough. im going to look at them again tonight. just want to get my free bore right on the reamer. going to be using bushing dies and seems like either I get very lucky or my set ups are good as I do not notice any runout issues on the rounds I currently do load for. thanks again guys