Mt guns is chambering me a .308 barrel. What freebore and neck dimensions should I specify?
The barrel is a 1-12 Bartein.
The barrel is a 1-12 Bartein.
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F T/R Competition Reamer specs for FTR chamber
- Thread starter CSiebert
- Start date
Re: Reamer specs for FTR chamber
Depending on the bullet you want to shoot... How long you want to load them?.. Your single feeding so mag lenth isn't a issue..
What brass do you want to use, do you intend on neck turning for a tight neck?
I really like the 95 palma reamer with a .342nk.. YMMV
Depending on the bullet you want to shoot... How long you want to load them?.. Your single feeding so mag lenth isn't a issue..
What brass do you want to use, do you intend on neck turning for a tight neck?
I really like the 95 palma reamer with a .342nk.. YMMV
Re: Reamer specs for FTR chamber
what Submoa said..
you really have to decide on a bullet and brass type IF you want to get specific..
but if you want to shoot a 155grn bullet out of either win or lapua cases a plama 95 reamer is a great place to start and will serve you well..
with a 12 twist you could also try the 175 or 185 class of bullets, but you might want to have a longer throat reamed
but you gunsmith could use the palma reamer then just add .020-.040 more throat..
what Submoa said..
you really have to decide on a bullet and brass type IF you want to get specific..
but if you want to shoot a 155grn bullet out of either win or lapua cases a plama 95 reamer is a great place to start and will serve you well..
with a 12 twist you could also try the 175 or 185 class of bullets, but you might want to have a longer throat reamed
but you gunsmith could use the palma reamer then just add .020-.040 more throat..
Re: Reamer specs for FTR chamber
if you wanna be competitive in FTR you gotta shoot heavy bullets (175 gr.and up...) and have a long throat for them.I`m not sure a 12 twist will do it....give dave kiff a call and tell him what you`re doing..... he`s always been a big help to me....
bill larson
if you wanna be competitive in FTR you gotta shoot heavy bullets (175 gr.and up...) and have a long throat for them.I`m not sure a 12 twist will do it....give dave kiff a call and tell him what you`re doing..... he`s always been a big help to me....
bill larson
Re: Reamer specs for FTR chamber
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Bill Larson</div><div class="ubbcode-body"> if you wanna be competitive in FTR you gotta shoot heavy bullets (175 gr.and up...) and have a long throat for them.I`m not sure a 12 twist will do it....give dave kiff a call and tell him what you`re doing..... he`s always been a big help to me....
bill larson </div></div>
You sure on that?
2009 Worlds Cahmp used 155 Scenar
Actually most of top ten used 155s
All depends on conditions and what you believe in
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Bill Larson</div><div class="ubbcode-body"> if you wanna be competitive in FTR you gotta shoot heavy bullets (175 gr.and up...) and have a long throat for them.I`m not sure a 12 twist will do it....give dave kiff a call and tell him what you`re doing..... he`s always been a big help to me....
bill larson </div></div>
You sure on that?
2009 Worlds Cahmp used 155 Scenar
Actually most of top ten used 155s
All depends on conditions and what you believe in
Re: Reamer specs for FTR chamber
I agree with Mike on bullet weight. Heavies have trade-off's. BOTH can be shot well. My best advice on bullet weight is to go with whatever your rifle will shoot well. I think it is easier to find a good load with the 155 grain bullets but the wind drift is larger. The heavier bullets require you to be more consistent with your position and a small lapse in proper form will cost you more (elevation) than with the faster 155 bullets.
With respect to the reamer, if you are unsure, go with the 95 Palma reamer or a Bisley reamer. It doesn't matter all that much in the big scheme. I personally shoot with a Palma reamer and if I'm shooting heavier bullets, I seat them deeper. I like having a chamber that will shoot BOTH 155 up to 185 grain bullets.
I agree with Mike on bullet weight. Heavies have trade-off's. BOTH can be shot well. My best advice on bullet weight is to go with whatever your rifle will shoot well. I think it is easier to find a good load with the 155 grain bullets but the wind drift is larger. The heavier bullets require you to be more consistent with your position and a small lapse in proper form will cost you more (elevation) than with the faster 155 bullets.
With respect to the reamer, if you are unsure, go with the 95 Palma reamer or a Bisley reamer. It doesn't matter all that much in the big scheme. I personally shoot with a Palma reamer and if I'm shooting heavier bullets, I seat them deeper. I like having a chamber that will shoot BOTH 155 up to 185 grain bullets.
Re: Reamer specs for FTR chamber
I just got mine back I had it reamed so that I can give the 155s a whirl. My comparator says it is about .100 shorter throat than my old barrel, but in my old barrel I couldn't even get to the lands with a 2156 still in the neck of the case.
I've got a box of 2156s that I'm going to do load development on if they work I may fly them for a while, but I've also got about 1000 185s and 175SMKs to play with too. (Don't see the need to burn Bergers at 2x the cost of SMKs for practice or club matches yet.)
For my local matches we don't usually have a lot of wind
I may end up running with 185s anyway.
I just got mine back I had it reamed so that I can give the 155s a whirl. My comparator says it is about .100 shorter throat than my old barrel, but in my old barrel I couldn't even get to the lands with a 2156 still in the neck of the case.
I've got a box of 2156s that I'm going to do load development on if they work I may fly them for a while, but I've also got about 1000 185s and 175SMKs to play with too. (Don't see the need to burn Bergers at 2x the cost of SMKs for practice or club matches yet.)
For my local matches we don't usually have a lot of wind
I may end up running with 185s anyway.
Re: Reamer specs for FTR chamber
Thanks guys I think I will just have them use the 95 and see how that works out. I can always throat it longer.
Thanks guys I think I will just have them use the 95 and see how that works out. I can always throat it longer.
Re: Reamer specs for FTR chamber
Jeff,
Do you jump the 185's the same amount as the 155.5's? I usually jump the 155.5's around 45 thousandth and if I get a chamber cut to do that with the 185's, assuming the boattail junction is above the neck/shoulder line, the 155.5's will almost be hanging out of the neck. I'm worried that with a little throat erosion I won't be able to shoot them. Maybe you set your freebore for the 155.5's and don't worry about pushing the boattail junction into the shoulder area for the 185's though?
Jeff,
Do you jump the 185's the same amount as the 155.5's? I usually jump the 155.5's around 45 thousandth and if I get a chamber cut to do that with the 185's, assuming the boattail junction is above the neck/shoulder line, the 155.5's will almost be hanging out of the neck. I'm worried that with a little throat erosion I won't be able to shoot them. Maybe you set your freebore for the 155.5's and don't worry about pushing the boattail junction into the shoulder area for the 185's though?
