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260 Reamer question

vprtoad

Sergeant
Full Member
Minuteman
Mar 27, 2009
253
5
lake titicacca
Anyone have the correct dimensions for a reamer to fit to mag lenth for a .260 and 140grn pills ?


ie. So I'm Not jumping them a mile to touch

thanks
 
Re: 260 Reamer question

Which 140gr pill you working with?
What magazine are you using, factory Rem 700, factory Win 70, AICS, or modified AICS?

Going to make a fair bit of difference as to needed freebore.
 
Re: 260 Reamer question

Tell your smith that you want a 139Scenar to be touching the lands with a Ojive length of 2.150, yes it's short, no it will not effect anything, after 1500 rounds downrange my Ojive length is 2.217, and it still bug holes, and I have a lot of room left in my mags. If your going to spec a reamer make a dummy round with those specs, and ask for a .295 neck.
 
Re: 260 Reamer question

140 vld's
or 140 amax's I know they like to jumped more

Really want to try 142 smk's as well


Factory mag 700 short action

thanks for the info
 
Re: 260 Reamer question

im no expert but i dont think you can get a reamer made to shoot both smk / amax bullets and shoot vld type bullets all. I think you have to pick , could be wrong though.
 
Re: 260 Reamer question

0.295 neck is a bit tight for my taste, as RP brass ends up about 0.292 - 0.293 for a loaded round. I've got a 0.297 neck on my reamers.

Easiest thing to do is call PTG, tell them what you want to do and give him CC #. I'm sure he has a reamer that is set up to do what you are asking.

I've got one 260 reamer set up for 142s out of a Rem 700 factory magazine/AR mag and a second reamer set up around 142s with boattail/bearing surface junction at the neck/shoulder junction.

If you are running 140 JLKs or the Berger Match BT LR bullet you'll have a pretty decent fit to a chamber cut for 142/140 at 2.800" but the OAL is going to be closer to 2.900" so single load only.