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Post by magnumwheelman on Jul 31, 2013 7:03:00 GMT -5
I can't get decent groups out of one of my FIL's old rifles ( he's been gone for over 15 years, & I hadn't shot this one before this summer ) it's possible he took it P Dogging a couple times, as he liked to do that... I think he mostly shot 223 out there though... I'm guessing the throat is eroded as I had some of his handloads, that he made specifically for this rifle, & 2.5" groups off the bench is pretty much what it'll shoot ( 3 trys ) I'm not too good at analyzing the chamber throats, but the rifling looks pretty clean... I'm sure I might be able to get a little more copper out, but it's not so fouled as to expect the groups to go that large... so without seeing the barrel, & without a round count, 2.5" groups on a rifle I sure shot much better than that, do you think it most likely that the throat is gone  |
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Post by oldschool on Jul 31, 2013 12:49:37 GMT -5
That's a pretty wide group for a Rem 700. Most sporter-weight 700s I've shot would typically shoot under an inch without much load development (.222 & .243). I would suspect a loose scope mount or an under/over-torqued action screw before I would look at the throat. That he had specific loads for the rifle indicates to me that he had found loads that worked. Throat erosion should cause accuracy to gradually degrade over a long period of time.
I'm assuming the rifle is in a wood stock, considering its vintage? If so, have you checked for bedding issues? Maybe wood pressing on one side of the barrel or the other?
One other possibility might be a defective scope. I've seen that happen several times in the last 20-30 years, causing a lot of frustration until the scope was changed. On variables, the erector tube assembly is the weak point (or the reticle itself).
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Post by subsonic on Jul 31, 2013 13:20:42 GMT -5
I agree. Barrel is the last suspect. What does the crown look like?
I'll give ya $50 for it ;-)
Try a good bore cleaning and use a little JB paste in the throat.
Try to touch the rifling by seating a bullet long. If you can touch rifling, odds are good that there isn't much erosion.
Any corrosion in the bore from sitting dirty for a long time?
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Post by Frank V on Jul 31, 2013 14:20:38 GMT -5
A .22-250 could be shot out pretty quickly if the shooter just kept hammering away & ignored how hot the bbl. was getting.
You might try really scrubbing the first 4" of bbl with something like J B Bore compound, then giving it a good cleaning with Wipe Out.
If it is really fouled groups can be almost patterns. I have a friend who has a VERY accurat rifle & he tells me when it gets fouled badly it'll actually shred the jacket on the bullet.
His might not be the only rifle that really mis behaves when really dirty?
Good luck.
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Post by magnumwheelman on Jul 31, 2013 15:35:52 GMT -5
Thanks for the reply's guys...scope is a new Vortex... mounts & rings are fine ( I just mounted the scope... so that may indicate an issue ) I just remounted the scope on another rifle to check it...
MIL used to smoke the ciggy's that had the little targets on the pack... FIL would never have been happy with a 2.5" group at 100 yards... he used the old ciggy packs for targets... I think I have a couple in some old loading manuals, that have 3/4" groups on them...
it is a wood stocked, sporter weight barreled rifle... crown looks OK ( nothing that hints an issue like a nick or anything ) I didn't run a dollar bill between the barrel & the stock, but gaps look normal... rifling looks good, this is one of the rifles I cleaned, oiled, & crated up 17 years ago, until I finally could build a walk in gun safe room ( which I'm just putting the finishing touches on the interior )a heavy barrel Remy 223 BDL was treated the same, & crated beside this rifle... a "fast 5 shot group" shot in 30 seconds or less in the 223 netted a less than 3/4" group, in the same conditions, so at this point, I suspect either the barrel, or the scope...
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Post by eagle1899 on Jul 31, 2013 18:11:13 GMT -5
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