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Originally Posted by G.T.
Hi Dave, there are several different measurements that you have to track, and some bench marks that you have to establish... ( measuring the effects of set) ... GT  |
GT--sounds a little involved, but not entirely daunting! Initially, I'll be measuring whatever springs are available in the mags I have, none that are new-new, just the very least-used mags. I was talking before about the mag springs; because you refer to diameter I'll bet you were referring to the round action/fp springs. But this will also translate to the square mag springs' data, right?
By "set", I'm presuming it refers to the o/c distance between individual coils (pitch), or is it something else?
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They were made long before this HV ammo, and are just not built/sprung for it.
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I agree, however in this case a little extra energy seems to do the trick. Might not be necessary in a carbine's longer barrel, which gives pressure for a tad longer, helping assure the action is fully cycling. The CCI Minimags are the lowest velocity I could find that offers a copper plated solid bullet. The fps rating for it is about 15% more than the regular CCI lr. I'll try the lr's again, but with lots of lube because the bare lead seems just too sticky and grabby. Since my initial trial with a silicone soaked mag, I've been adjusting and running things without lube. Friday, I tried a 'wet' mag again--after the lips were adjusted--and reliability was again increased noticeably--once for the adjustment, and again for the lubrication! I think I'll order a spring kit from Bob's and experiment to see what kind of difference they might make.