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Pressure? Or not?
hadjii Member Posts: 976 ✭✭
Qso, the bottom pic shows a 5 shot group I shot with my 6.5-05. Bullet was Speer Gold dot 140 gr. Powder was 48.5 grains of Supreme, and primer was cci200. The top pic is of the brass from the 5 shot group. My question is this: does the primers appear to be exhibiting signs of high pressure?
Combat Vet VN
D.A.V Life Member
Sorry. 6.5-06. Not sure I'm following you on checking diameter. Diameter of what?
Oh. I bet you meant diameter of the case. If that's correct, I did not, but I will when I get home, and compare it to the unfired cases.
Nononsense, I measured both fired and unfired cases, winchester and peterson brand. I'm getting .002 growth between fired and unfired. Winchester or Peterson. Didn't matter. Both were the same. .466 for unfired, and .468 for fired of either brand.
Ok. I'll repost again when I get the once-fired cases reloaded and shot again, and check growth again, and then get your opinion again. Thanks nononsense. Your help is much appreciated.
Also go by the bolt lift after firing, if it's snug you are probably at the high pressure area.
Also if you are trying to neck size only and you find that the cases are tight when chamber testing the brass only BEFORE it's reloaded is also a sign for some concern to keep a heads up.
I also keep count and I do not reload cases after they have be trimmed 3 times. (3 times having to be trimmed indicates the brass has stretched and IS THINNED OUT and if the base or necks are not splitting they WILL LET GO SOON)
I have some low velocity, low recoil loads using 5744 powder that I save this HV rejected reload brass for reloading. Just to mention a few calibers for LV loads, 30:06, 7mm mag, 264 win mag, 300 mag at 30/30 reduced velocities is usually very accurate at 100 yards and kids and grandkids can practice and hunt with the hard kicking calibers and shoot a big bullet out to 125 yards or so. (so hang onto that disgarded brass and try some low vel loads)The low vel loads also usually results in very little to no stretch of the reloads, because it's low pressure area.
I also have some 223 LV 22mag loads that are very accurate that I use for squirrel hunting with a 223.
(their is quite a recipe to getting consistent accuracy with this combo)