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Post by cowhunter on Mar 5, 2015 12:36:53 GMT -5
As I was full forming then indexing all copper bullets this morning for a new gun, I kept getting the bullets too tight. I would twist and push and finagle the all copper bullets against the rifling at the end of the muzzle. Can this hurt the rifling? Bore guides don't helo any when you are first getting a bullet started.
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Post by hankinsrfls on Mar 5, 2015 12:54:42 GMT -5
Phil.. You would have to be putting a lot of pressure on the crown (rifling) to damage it.. I really doubt you could damage it, holding the bullets with your fingers... Jeff.
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Post by cowhunter on Mar 5, 2015 13:31:15 GMT -5
That is good to know Jeff, but now I worry about my bullet jag, which is barely thinner than the .416 muzzle. If a bullet is hard to push down at all, I could put pressure on that aluminum jag, and in fact with another gun I recall the jag getting a bit scraped up by the rifling. I'm betting that is a no no. Yea? I guess I better get a skinny jag.
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Deleted Member
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Post by Deleted on Mar 5, 2015 19:49:32 GMT -5
Are you using the Cutting Edge Bullets?
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Post by Richard on Mar 5, 2015 19:59:20 GMT -5
I have noticed that I get a bit of copper build up in the first inch to inch and a half of the muzzle where my "smooth sized" bullet are started. Don't see any real damage to the crown. If you had read the article I posted on "crown damage" not being all that critical, I would not worry Phil. ( A crown was damaged in various stages and shot for accuracy at each stage--------surprisingly there was little of no significant difference from the pristine crown to the dinged up crown)
Richard
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Post by Mid_Tn_Plowboy on Mar 6, 2015 11:22:30 GMT -5
I had this run across my mind the other day adjusting my FF. I'm still not all that comfortable FF sizing. I haven't found my routine yet. I always nick the land marks on the bullet on my subsequent passes. I won't try to FF a 310 APB yet, ONLY 300hp's so far. I have thought of making a press mount so I can see the bottom of the die better. Smooth forming isn't an issue, not having to index. Richard, my 45PN would gradually get tighter at the muzzle shooting saboted. Haven't shot enough sabotless to comment on it yet. Is this because the barrel is making all of its final forming in those first few inches, leaving heavier deposits of copper or plastic?
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Post by Richard on Mar 6, 2015 21:31:30 GMT -5
Yes, I believe that is the reason. The initial forcing of the bullet into the lands (for smooth riders) and groves (for ff). Once it has cut or compressed the bullet initially the friction I believe decreases.
Richard
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