Forums › Forums › General Discussion › 6.5 x55 I’m going to get one if can
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1 Bullseye
First of all, you need to use a Stoney Point overall length gauge with a Modified Case to measure your bullet to lands measurement. No need to chop a case, and you can then load your good stuff.
I break in a barrel this way:
Shoot once and clean for 10 shots.
Shoot 3 and clean for 9 shots.
Shoot 5 and clean for 10 shots.Top quality barrels are broken in by then.
My Super Varmint showed considerably reduced fouling at shot #12. Kreiger on The Beast broke in at shot 19. Kreiger on Big Louie broke in at shot 22. Most are looking good by shot #25. My latest Bartlein took FOREVER to break in…I don't know why. But it shoots crazy good now. Just gotta be patient.
I'll even start load development during break-in and fire forming. You WILL see what loads want to shoot well. Patterns will emerge.
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21 Bullseyes
As some of you know I like moly coated bullets. But for break in I'm thinking naked Berger bullet I have on hand. I plan to buy a box of 20 misc. loaded rounds so I don't need to sacrifice a Lapua case for bullet seating depth.
I hate paying over $1 per round but my Lapua cases shpould last 10-15 loadings or more.
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21 Bullseyes
Sorry YukonAl, I didn't read your post earlier.
I will follow your break in for the most part. I have the stony point tool but have observed some poor results with that. I did some testing with it in .223 and then did some testing with a cut case and lubed bullet that seemed to give more repeatable results. I took my Dremel tool and cut 2 slots in a case neck and put a lubed bullet in the mouth. I took out the firing pin so I could “feel” what was going on and drove the bolt home and flicked it up and out, but put my finger in ejection port to keep bullet from getting disturbed. This “old fashion” way of determining bullet seating depth seems more repeatable and not relying on the modified case dimensions.
The goal of course is determining the length from the bolt face to the start of the rifling. I have a hell of a time using my caliper (Mitutoyo good one) and getting repeatable results. What I use is the “innovative” tool (brand name) to measure cartridge length. This tool gives me way more repeatability than my good calipers.
I then make a dummy round seated to the lands and store it for reference. I use Wilson chamber seating dies and use the calipers to measure the seating stem for adjustments from the lands.
I do this for all my different bullets, some day I might go the whole route like Eric Cortina does with the green comparators and sorting bullets and so on.
Btw he has an excellent video series on reloading on YouTube.
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