Hello all. New guy to the site looking for some good information. I have been pondering the fact of building a long range rifle for quite some time now and have finally decided to go ahead and do it.
I have been doing a lot of reading on the subject and decided on the basics. I want to start with a stevens model 200 long action, get a shilen barrel chambered in 7mm rem mag, replace the trigger, and stock. Now all I need is advice on the barrel twist and chambering specs. I am a avid reloader and hunter just looking to expand my range as far as possible.
First off with the rifling twist. Which twist would be best for use of the berger 168 or 180 gr. Vld bullets. I was thinking 1-9" twist but looking for opinions of all who have experience with this caliber for long range.
Second, chambering. Shilen has 3 chamberings available for this caliber. 7mm Rem mag- 7mm Rem mag (.315" nk)-7mm Rem mag (.312" nk). My concern is. The tighter neck is it worth all the trouble of the extra prep time in the means of accuracy. Does anyone have experience with these chamberings? Which would be most accurate.
Any and all input is greatly appreciated. I must say from all the posts I have read up to date I have learned a lot of valuable information that I will keep for ever.
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