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Post by GonHuntin on Sept 22, 2003 15:16:49 GMT -5
Did you ever wish you didn't own a chronograph? I have been working up loads for a 250 Savage handgun and it has been frustrating! I had a load that looked good.....decent group and it *should* have been fast enough......out comes the chrono and puts that wishful thinking to bed! To make things worse, I dig out a contender in 257 JDJ.....same caliber, same bullet, slightly less case volume, *suppose* to run at lower pressures.....it's substantially FASTER than the 250 Savage!  Just when you think you have something figured out....those annoying facts get right in the way ;D |
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Post by TexasDoc on Sept 22, 2003 16:18:03 GMT -5
Well GH I know the feeling well,had a 300 win mag load that as fast intill I ran it over the Chrono, I was only 100 fps off,But it was still dishearting to find that a load is not where you though it was.So now I load test with a Chrono and the heart break is not there anymore.
TexasDoc
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Post by RidgeRunner on Sept 25, 2003 3:02:16 GMT -5
After working with a chronograph for about 10 years you really can't believe how you ever got by without it. They tell you alot of what your load will do without putting the rifle on a sandbag. for instance, the load I shoot in my custom 7mmSTW clocks an average of 3552 fps, the extreme spread is 16 fps, before I shot that load for groups I knew it was a keeper, a little bench work made it fact.
My pact pro has a ballistic computer which really makes it a nice package, and saves me time and ammo working on trajectories
RR
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Post by todbartell on Sept 30, 2003 1:15:39 GMT -5
I love my chrony. Trouble is they don't lie.  Man, my 7mm rem mag was a fire belching giant slayer in my pre-chrony days. It was to my suprise when my 160 gr. Partitions chrony'd @ 7x57 Mauser speeds!  63 grs. Rl22, moly coated Partition Gold, 26" barrel, 2750 fps. Seems the moly drops 150 fps from regular bullets, now I know!  |
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