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  #31  
Old 07-11-2019, 11:15 AM
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I am of the opinion that the front end of the chamber is more critical of fit for accuracy than the rear.
My opinion is worth whatchapaidferit.
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  #32  
Old 07-11-2019, 11:25 AM
truckjohn

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I agree. What chamber do you like?
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  #33  
Old 07-11-2019, 11:39 AM
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For single shots and bolt guns the Win.52.
Dont have much experience with auto-loaders.
If I had to search for a new reamer to replace the Win.52 Id be researching heavily what the main players are using these days.
That isnt likely to happen with me, I am content now to just try to get the best I can out of what Ive got in the rack. Lots of ammo yet to try and some days I eat the bear, some days he eats me.
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  #34  
Old 07-13-2019, 05:05 PM
truckjohn

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I am sort of at a toss up between the Win 52 and PTG match reamers. This is a mag fed bolt action - and I think the chamber needs a wider mouth so it loads reliably. I have this feeling that a Lilja or Eley chamber are a single-load proposition unless I could flare out the chamber mouth a bit.

I drew them out on CAD to take a look-see what would happen with the 0.219/0.2235" bore/groove dimensions of these Marlin barrels. The main difference I see between the two is that the PTG chamber runs the bullet driving bands into the rifling only to the end of the throat but not actually up into the bore. The Win 52 chamber heavily engraves the bullet past the throat into the full bore diameter rifling.

I think I need to pull a bullet and do an experiment to see just how hard it will be to close the bolt if you have to fully shove a bullet all the way past the throat up into the rifling. I am not sure if the Marlin bolt is up to the task.

I would appreciate your comments on bolt closing effort with the Win 52 vs other match chambers you have tried.

Last edited by truckjohn; 07-13-2019 at 05:08 PM.
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  #35  
Old 07-13-2019, 05:43 PM
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The 52 reamer we have been using has recently worked in Stevens 44 sgl shot (not a beefy closing stroke) and a Sav 19 (should be comparable in bolt camming to a Marlin?) as well as a conversion SF '03A3 to Mdl1922 configuration.
With your considerations how about an auto-loader match chamber?

Last edited by gcrank1; 07-13-2019 at 05:46 PM.
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  #36  
Old 07-13-2019, 06:37 PM
truckjohn

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I was more concerned about the nose or driving band hitting the chamber mouth with the tight match chambers based on the published info on chambers like the Eley, Lilja, and Calfree chambers.. The 52 was mag fed - so I would assume that was already sorted out.... And the reports on here didn't highlight any issues with feeding out of mags with the PTG reamer either.

I was concerned about the bolt closing effort based on testing engraving in a sporting chamber... But then it dawned on me that the match reamers use a 1.5 or 2 degree throat where the Sporting chamber uses a 5-degree throat - so the engraving force will be less than half of what I had in my little test.

But chamber wise - if I only chop off 1/2" off the back of the barrel and used one of those straight match reamers - I would end up with a tapered mouth that starts off at 0.2275" and tapers down to around 0.225" over 0.3" left over from the old chamber. I would have to chop off almost 7/8" to get rid of that...

Decisions.....
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  #37  
Old 10-01-2019, 06:21 PM
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barrel massage to truckjohn

sorry for late reply musta forgot about post all of that work is good if your just wanting to see what you can do with a beater do a coupla ones to see what happens then buy a good reamer trigger work is what the pain is usualy dont have much to work with
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