Lyman #311466 with & without gas checks

Maven

Well-Known Member
I've always been curious about shooting GC CB's "naked," particularly after having read so many mixed reviews about their performance. Yesterday I tried 9 of them, sized to .311" and seated to just touch the rifling in my Win. Mod 70 .30-06. The load was 8.7gr. Unique whereas I'd use 12.5gr. Unique for GC .30cal. CB's of various weights in that rifle. Accuracy @ 50 yd. was a tad more than 2 m.o.a. for #-466 sans GC (hand lubed with Lars' Liquid Xlox), which puts it quite close to what I get with the same (and other CB's) at that distance. Lastly, there was virtually no leading. This test bears repeating with -466 and Saeco #315, which is normally very accurate when fully "dressed." Next time I'll remember to post pics too.
 

Bret4207

At the casting bench in the sky. RIP Bret.
I shot GC-less bullets for a long time because I had no access to GC's or a sizer. As long as they aren't pushed hard they often work pretty good in some guns. In other guns or with different designs they often don't. It's a crap shoot...sometimes literally!
 

Bret4207

At the casting bench in the sky. RIP Bret.
Now using PC; I find that Gas Check bullets sans the checks are super accurate

That's interesting Jim. Does the PC fill the GC shank area? Don't know anything about PC really, so if it's a dumb question, forgive me.
 

fiver

Well-Known Member
it doesn't fill the shank area.
it provides a lot more protection to the corners of the base of the drive band stopping gas cutting.

if you think of powder coating as a form fitting water proof wind breaker, rather than the heavier winter coat a copper wrapper provides, it makes more sense.
 

JWFilips

Well-Known Member
No It does not But I think it was Ian & fiver that brought it to my attention and he appears to be correct