varget and benchmark for 223
Posted 01 October 2009 - 11:41 AM
I was shooting 55gr. Blitzkings out of a 18" heavy bbl.
My different powder measurements were:
Any ideas why it seems the benchmark loads are faster? Thanks.
Posted 02 October 2009 - 12:42 AM
I see this more when shooting hand guns. I notice the faster round clears the barrel before the recoil can lift the gun. A slower load will exit the barrel higher on the arch of barrel lift.
Posted 02 October 2009 - 03:25 AM
Posted 02 October 2009 - 10:27 AM
Whenever you change any componant, anything can happen. Barrel harmonics plays the biggest part. I just find the combination that shoots tightest. A chronograph is a useful tool that all handloaders should have, but a hundred or so feet per second isn't going to mean anything in the real world anyway.
Posted 02 October 2009 - 10:41 AM
I'm not necessarily going for the fastest load, just courious why they were shooting the way they were. I actually just started reloading this year. I love it!
Posted 04 October 2009 - 10:08 PM
Posted 09 October 2009 - 03:06 PM
CZ American 223 with 1 in 12 twist, 50 to 55 grain. Mine shot less than 1 inch at 100 yards out of the box with factory ammo - it didn't seem to matter: Rem, Federal, lake city, etc. With my hand loads I got down to 1/2 inch at 100 yards.
The best group was with Nosler 55 BTip and Reloder 10x, medium weight load. Down to 1/2 inch at 100 yards.
Less than 3/4 inch at 100 yards
Benchmark and any 50 to 55 grain Sierra then Hornady.
H335 and Varget were about the same with less than 1 inch to 3/4 inch.
Factory UMC 45 grain HP factory was around 3/4 inch.
X-terminator I am still working with but RL 10x still seems to be the best for me.
IMR 3031 was the worst - just lucky to hit a 2 foot by 2 foot paper.
Edited by Mush, 09 October 2009 - 03:08 PM.
Posted 13 October 2009 - 03:24 AM
At any rate, that'd be my guess...
Edit: Remember, for a truly efficient load (read: to see the full benefits of a particular powder/bullet combo), you'll want the pressure to peak (i.e. velocity) just at the end of the barrel (say an inch back from the muzzle).
You can figure this out with a chronograph on your own. Just take your existing Varget load, and start loading down in .2gr increments. Shoot these over a chrono and determine when velocity starts to fall off. That would probably be the most efficient powder load...
Edited by MarinePMI, 13 October 2009 - 03:28 AM.
Posted 13 October 2009 - 07:30 AM
I'm hoping to order a chono after deer season and hit the range a little more and figure my gun out. Yeah i was thinkin maybe the short barrel might have some thing to do with it. By the way, In case it makes much of a difference, my twist is 1 in 10.