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Post by buckstuds on Mar 13, 2016 14:54:38 GMT -5
This gun is giving me fits. My lite weight gun shoots awesome of a lead sled, this land cannon is very hard to shoot off of a lead sled. I shot today some 344 bombs and 95 grains of I3031. This was my third attempt at 100 yards for a group. The first two were right at an inch group. The third group was awesome with me screwing up a shot.  |
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WGK
Full Member
Posts: 154
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Post by WGK on Mar 13, 2016 15:02:04 GMT -5
That is an AWESOME group congrats looks like you have a real shooter there.
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Post by keith on Mar 13, 2016 15:45:04 GMT -5
That still looks pretty good to me. My guess is you are only a small tweak away from shooting bugholes.
I know guys like the sleds but I can't shoot off of one. It may be because I've only tried it a little several times over the years but I can't get comfortable behind one and don't feel like I'm managing the gun. As I mentioned in a thread a while back, I had to get completely off the bench for a while because of recoil and what it was about to do to my shooting. I'm still working from the ground.
I guess if you have three attempts at groups with the 344gn you have 9 shots down the barrel. Sound right or is it more because It looks like your target you posted has 3 through one ragged hole and 1 away? Either way, it takes a few shots to settle in for me when I make component changes but it should start coming together quickly after that. I know when I change powder and bullet I need a few rounds to get things to settle in. If I just swap powder and stick with the same bullet brand it usually only takes a shot or two to settle. Did you start with a fouled or clean bore when you swapped from 4198 and the Parker or Pittman that you were shooting?
My gun likes 95gn of IMR3031 with that bullet but Carlos' gun likes 90gn and that is what he shot that little 8 or 9 shot group at 500yds with. I started at 80gn and it was terrible, 85gn was better but awful, 90gn was good, and 95gn just made a ragged hole at 100yds and will shoot sub-MoA to 500yds with that combo. I poured out my 100gn charges because I didn't need to go there.
He and I both shoot them FF and if I remember correctly you ordered .452". No way to say it is gospel but when I shoot loose FF or SF bullets I use wads and get better results. Not sure if you use them or not.
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Post by buckstuds on Mar 13, 2016 15:51:02 GMT -5
Mine are smooth formed. Also using jeffs ignition, lmrp. No wads, but I do have veggie wads to try. This load combo pushes me and a fifty lb sled back a couple inches. The four shots on that group was a little richard coming out of me, going for five but got pissed at myself.
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Post by keith on Mar 13, 2016 17:06:36 GMT -5
Sorting out good 5 shot groups is always tougher than 3 if for no other reason than the discipline to keep it together when you stack the first 3 into one ragged hole. Then law of averages catches up the higher the number of shots required to put precision to the test.
I shot an online challenge a few months back that was two, 10-shot groups back to back with an AR because people kept claiming to own half-minute guns. My BPM will shoot half-minute 5-shot groups or better most of the time but 10-shot groups turned out .7 and .8 MOA.
Either way, those first three shots are stellar. If you can do that every outing you will be killing it. Like I said, wads may not be a cure all but smooth form I get the occasional shot inexplicably out of group and wads (especially veggie) seem to cure it for me. I think it's more important for loose bullets than tight but I've seen it work on really loose full form bullets too. The other day it took an experimental bullet that was sized loose enough it would drop down the bore with the weight of the ramrod and shot poorly to very precise and repeatable.
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