Looking at getting a prefit for a savage in 284 Win. Will be using Peterson brass and either 162 eldx or 168 Berger for hunting. Looking at a Shilen with a .317 neck and throated to shoot the above bullets. Will the neck diameter be ok without turning? The other option is a Criterion match chamber with .322 neck and .220 freebore.
Savage 284 build chamber questions
- Thread starter WEL
- Start date
Yes but is it too much clearance? That was the concern with that chamber.
6MMsteve
Gold $$ Contributor
when you headspace... headspace with a GO only, check the gauge then check the new brass, set the go with a little feel, I usually set headspace .002 over new brass..if this makes sense. sometimes I shoot 1 fireformed case just to see if I made the correct HS set if not I will tighten the HS a little more..been doing this for 5 yrs my brass hardly moves sizing is easy, accuracy is good, preferred barrels has the Shehane and other versions of the 284
Good question. I dont currently have the brass. Maybe someone with Peterson could chime in. My 7 mag with win brass is .310.
Yes I’ve seen guys put tape on brass with about .002-.003 as a check.
One Eye Pete
Gold $$ Contributor
I'm running a 284 Shehane and have used both Peterson and Lapua brass.
I know from the records on my computer that my loaded neck OD measures .3155 to .316 with a Sierra 180gn Matchking and the Lapua brass
I'm not at home right now so I cant get a measurement on the loaded Peterson brass with a Berger bullet but I'm pretty sure it isn't any thinner.
My reamer has a .320 neck.
You may be able to chamber a round with a .317 neck chamber but you will have inadequate clearance without turning. For a hunting rifle I would go with the .322 neck and you should be fine no matter what brass or bullets you use. The 220 free bore should be fine.
I know from the records on my computer that my loaded neck OD measures .3155 to .316 with a Sierra 180gn Matchking and the Lapua brass
I'm not at home right now so I cant get a measurement on the loaded Peterson brass with a Berger bullet but I'm pretty sure it isn't any thinner.
My reamer has a .320 neck.
You may be able to chamber a round with a .317 neck chamber but you will have inadequate clearance without turning. For a hunting rifle I would go with the .322 neck and you should be fine no matter what brass or bullets you use. The 220 free bore should be fine.
Mt.Boy
Silver $$ Contributor
I have a Bartlein prefit from bugholes in 284. It has a .317 neck and I had to turn my Peterson brass. I would go with a .322 if you don’t wanna turn. If I can find my note I am thinking the neck thickness on my new Peterson brass was around .015 to .0155 before I turned
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FeMan
Gold $$ Contributor
I ordered my last reamer at 0.320 for no turn with Peterson and the new Lapua. It seems perfect. I wouldn't go any smaller and 0.317 is too tight for sure. I would guess a freebore of 0.185 to 0.215 would be a good range. I shoot 175 eldx in a 0.235 freebore and that seems ideal.
Thats why I’m leaning towards the.322 neck. Would be .006-.007 clearance. I would think that would be enough.
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