Lengthening factory throats?

[therifleman556]

Can this be done with a hand reamer without removing the barrel? I'd like to lengthen the magazine and bolt stop on my Tikka 270 WSM to seat the ELD or VLD out of the case some, but there isn't enough length in the factory throat. Would this be worthwhile or are the gains just too minimal?

 

[Ckgworks]

I lengthened the throat in my 6.5 grendel barrel without removing the barrel, using a PTG hand turn throater. I am completely satisfied with it.... prior to cutting, most of my bullets were jammed into the case, no where near max mag length, and many were in so deep, the case mouth was past the bearing surface. There is a post on here with a couple things I would do when doing it by hand next time. Is it worth it? For me it was, as it made my rifle much more usable, but I'm not sure what your performance gains would be.

 

[therifleman556]

Well, if I swap out to a long action mag and bolt stop my magazine availability will likely exceed the case's longest possible overall length. My thoughts were if I could chamber longer rounds I'd have a rifle that gives up very little to the 270 Weatherby. Is it a huge difference? Probably not; but I can't leave anything well enough alone.

 

[Ckgworks]

Sounds like a fun one to play with! I can't leave well enough alone either, so I'd take advantage of that Tikka Action!

 

[26Reload]

Ckgworks....how much did your final loads improve over your shorter variance...
I would still like to lengthen my 65284....but that may be a while....

 

[Ckgworks]

I haven't got back to the Grendel much yet, but I'm just about to start playing with it again. I ran out of time with hunting season approaching, so I worked up a quick load with a new bullet and new powder, that shot good and went to load more and realized I have a major issue with neck tension......None of my Grendel brass has been annealed and the Hornady dies I have over size the **** out of it, so I was getting real inconsistent results, but with new brass it shot really good. I loaded up a box of once fired for hunting and they were shooting about 5/8" at 100 yards. My kids used them for their deer this year, and a couple weeks ago we had a cold snap down in the 20's which is pretty cold for here, so I shot the last five in a group to see how they did in the cold (Load development was done in the 90's) They went into a ragged hole about 1/2" so I was pretty fired up. Next up is to go back and load using the same bullet and powder combo as before and do a comparison. I'm hoping that I can get some loads made up and take advantage of some nice Spring days to go out and test it......... Sorry kind of a long response to say that I haven't done any more on it!

 

[tbrice23]

Can this be done with a hand reamer without removing the barrel? I'd like to lengthen the magazine and bolt stop on my Tikka 270 WSM to seat the ELD or VLD out of the case some, but there isn't enough length in the factory throat. Would this be worthwhile or are the gains just too minimal?

I have a ptg 270 cal throater used to lengthen the freebore .030" of a chamber and hasn't been touched again. Let me know if you want it.

 

[squeezenhope]

When you do this by hand go slow and easy. It is amazing how much metal a new sharp throater removes.

 

[therifleman556]

I'm going to buy that one off of tbrice. Without the pressure of having to return the tool after 7 days I should have plenty of time to rig up a basic depth stop. I've got to measure to be exact but I think I have to go .100" or so deeper to get the 145 Hornady to the ideal seating depth. I'll check for sure when I get a quiet moment.

 

[MNbogboy]

Remember, go easy

 

[therifleman556]

Just measured, it's .085". Anyone know if the coal for the Bergers (140 or 150) is longer or shorter than the Hornady? That's probably worth knowing in case I don't want to marry one bullet.

 

[tbrice23]

I have both 140gr (classic hybrid and VLD) Bergers and 150 gr.
When I get home I'll get you some measurements.

 

[tbrice23]

https://www.google.com/url?sa=t&sou...FjAAegQIBRAB&usg=AOvVaw0DNaaIRzAtyvEmR-TDOAxI
You can look here.

 

[tbrice23]

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