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Sellier and Bellot Primers (Read 7755 times)

JackHughs Oldtimer Offline Posts: 657 Location: Riverbank Joined: Sep 27^th, 2008	Re: Sellier and Bellot Primers Reply #15 - Mar 22^nd, 2016 at 2:09pm	Print Post
	Pentz wrote on Mar 22^nd, 2016 at 10:16am: Rookie question: Must I pull the BR forearm from my CPA to look for the barrel sweet spot? Not sure if I could get away from this in CBA competition so am wondering if it is worth the effort. I hope I understand the question. There are two separate "sweet spots." One is the barrel sweet spot if you are using a sled. The other is the forearm sweet spot if you are shooting from the forearm. In either case, the applicable sweet spot is determined by moving the support point back and forth until vertical dispersion is minimized. If you will be shooting from a CPA benchrest forearm, you may not be able to find the forearm sweet spot. I had to extend my CPA forearm by about 2 1/2" to find the happy spot. On the picture, look for the darker wood at the front of the forearm. When shooting from a sled, I remove the benchrest forearm and replace it with a very small forearm attached with only one screw. JackHughs

	The best lack all conviction, while the worst Are full of passionate intensity. W.B. Yeats
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JackHughs Oldtimer Offline Posts: 657 Location: Riverbank Joined: Sep 27^th, 2008	Re: Sellier and Bellot Primers Reply #16 - Mar 22^nd, 2016 at 2:20pm	Print Post
	Picture of sled and small forearm. JackHughs

	The best lack all conviction, while the worst Are full of passionate intensity. W.B. Yeats
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Schuetzenmiester Frequent Elocutionist Offline Posts: 6707 Location: Cool Wet Side of WA Joined: Apr 27^th, 2008	Re: Sellier and Bellot Primers Reply #17 - Mar 22^nd, 2016 at 9:43pm	Print Post
	My Stevens Pope Ballard is as close to the front sight as I can put the muzzle rest. It varies,

	"some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence
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Pentz Senior Forum Member Offline Funf und Zwanzig mit den Hut Posts: 435 Location: Vancouver, WA Joined: Sep 4^th, 2014	Re: Sellier and Bellot Primers Reply #18 - Mar 22^nd, 2016 at 11:36pm	Print Post
	Alot to think about and go on, thanks. My CPA likes the forearm to project 2 fingers in front of the rest; I mark it with a thin strip of blue painter's tape. I'm still working on getting a consistent rear bag setting; it has a semi-sporter butt stock.

	ASSRA Member Yoostabe # 11497
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JLouis Frequent Elocutionist Offline Posts: 10625 Joined: Apr 8^th, 2009	Re: Sellier and Bellot Primers Reply #19 - Mar 22^nd, 2016 at 11:39pm	Print Post
	Thank you Jan it is nice to see that one can still learn something on this site to help others in need based on ones hard earned personal experiances that they are freely willing to share. JLouis

	" It Is Better To Now Have Been A Has Been Than A Never Was Or A Wanna Be "
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frnkeore Frequent Elocutionist Offline Posts: 7647 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: Sellier and Bellot Primers Reply #20 - Mar 23^rd, 2016 at 1:08am	Print Post
	Mike, This is another way to approach barrel harmonics, what I call a free floating forearm. Although you can't really have a FULL floating barrel on a single shot, because the scopes are mounted on the barrel. This arrangement is opposite the scope and might offset the scopes influence on the harmonics. I mount a 1/4" thick plate on the bottom flat. Relieve it between the screws and then mount the forearm to it, w/o any contact with the barrel. Your forearm can be as long or short, as you like this way w/o effecting the barrel. I didn't relieve the forearm for the 1/4" plate so, there is a 1/4" gap around the barrel for any cooling effect it might have. Frank

	ASSRA Member #696, ISSA Member #339
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Schuetzenmiester Frequent Elocutionist Offline Posts: 6707 Location: Cool Wet Side of WA Joined: Apr 27^th, 2008	Re: Sellier and Bellot Primers Reply #21 - Mar 23^rd, 2016 at 1:58am	Print Post
	My 25 Hornet HiWall has a forearm hanger Dick Spencer made to free float the barrel. It is attached to the action. Ron Smith may have put him up to it. Not sure who's invention it was.

	"some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence
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