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MichalS

6,5mm Creedmore or 6,5x47L for F Open?

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" The 47 will just about get to 1000 yards " ??? We've shot these at 1200yds with surprisingly good results.

At MV of 2900fps, the 136 grain Scenar L bullets at 1000 yds are still comfortably supersonic (1423 fps,  Litz Point Mass).

Re-Pete

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2 hours ago, Re-Pete said:

" The 47 will just about get to 1000 yards " ??? We've shot these at 1200yds with surprisingly good results.

At MV of 2900fps, the 136 grain Scenar L bullets at 1000 yds are still comfortably supersonic (1423 fps,  Litz Point Mass).

Re-Pete

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Pete, I did say this was in my experience. I gave up pushing 130+ grain bullets out of my 47 at 2900 fps or more because to do that I have use barrel burning powders such as RS60. 

I don’t use anything other than H4350 to push 140/142 grain bullets in my Creedmoor and easy going at the 1000 yard distance.

 

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A comment on "barrel burning" powders..............I have a Musgrave 6BR which had an unknown round count before I bought it, and has had 2000 rounds through it since. The first 1000 or so were a stiff load of RS60, (or Elcho 17 as it was then) MV 3020fps with 105 grain Scenar's , and latterly, I've used RS52 also with 105 Scenar "L"'s  at an MV of 2900fps. I've shot this at 1000yds with some surprisingly good results. The barrel is a Lothar 30" 8 twist, and chatter marks from the button rifling machine are still just visible. Some crazy paving is also visible in the throat area.................

Since I've had it, the freebore has increased noticeably but not excessively, around 20-25 thou. and It will still shoot 1/2 MOA at 300yds on a good day.

My 6.5x47, (also a Lothar barrel,) has done 2150 rounds of 136 Scenar L's at 2900fps (RS60), and shows less than 20 thou increase in freebore since it was built.

Having said all that, I consider a barrel to be a consumable, a bit like a car clutch lining.......................but I fully understand other points of view.

Just don't get me started on "breaking in" new barrels................!!!!!!!!!!

Re-Pete

 

 

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