My RPR is displaying an alarming drop in accuracy after about 800 rounds of 6.5 CM. I tried Sweets, JB on the throat and no improvement. The gun is now about 3 MOA instead of the .3 MOA it was at. I can’t figure out what it could be other than the barrel. I’m looking at a Bartlein but they are a pain to order and get machined for less than the cost of a new gun. They suggest Bug Hole but my experience with them isn’t great. Expensive and limited Bartlein selection requiring machining for an RPR plus an up charge for credit card purchase which is odd in 2019. I see Krieger has fully ready to go barrels for the RPR. Has anyone tried either? Any better suggestions?
Barrel Advice Needed
- Thread starter ChuckP65
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MikeMcCasland
Team Texas F-T/R
I shoot F-Class with a guy who occasionally brings out an RPR with a Krieger in 'less serious' matches; it seems to shoot pretty well. I don't think you can go wrong with a Kreiger at all, especially if they're doing the chambering work.
That said, I would strongly doubt your factory barrel would go from .3 MOA to 3MOA in 800 rounds from barrel wear alone; something doesn't sound right. I assume you've inspected optics/mounts, tried seating depth adjustments on your load etc?.
That said, I would strongly doubt your factory barrel would go from .3 MOA to 3MOA in 800 rounds from barrel wear alone; something doesn't sound right. I assume you've inspected optics/mounts, tried seating depth adjustments on your load etc?.
A 3MOA rifle is not going to shoot 0.3MOA groups by moving the bullet 0.001" closer to or further from the lands. Here's a load development target that has powder varying over a 1.2gr range (in a BR case) and seating depth varying over a 0.015" range. Both charge and seating depth matter, but neither is capable of increasing group size from bugholes to patterning board.
On the OP's rifle something is loose or broken, quite probably in the optics/mount, but possibly elsewhere. The barrel is unlikely to be the problem, but a borescope inspection is warranted just in case.
joshb
Gold $$ Contributor
^^^^This and check all the other screws that hold it together!
Krieger is top shelf.
I’m suspicious of the scope. I’ll double check it plus the throat. Thanks!
Dusty Stevens
Shiner
If it was mine and i was in your spot id sell it and get something a little easier to upgrade. You can put a barrel on a savage for a lot less. Remjngton also plus have anything else you ever want to upgrade easily. A bergara will shoot circles around the ruger and youd already have an upgraded barrel from the start. Once you start dumping money in there its kinda like throwing good money down a well
Cleaned during those 800 rounds ? How many rounds between each clean ?
That’s the way my issue started, at first I thought it was me then the scope started jumping out of focus with every shot and it was indeed the scope.
Check the muzzle end for copper fouling, about 3"in. That is where the copper really bonds to the barrel.
joshb
Gold $$ Contributor
Last week, I put a scope on a newly purchased old gun. Loaded up some test rounds and took it to the range. It shot like crap! Figured I bought a lemon. When I went to clean it, I found the barrel was hitting the stock. Aha! Well, it was touching the stock because the action screws were loose. Aha! I was stupid and didn’t check EVERYTHING!
Do the easy stuff before you buy anything!
Do the easy stuff before you buy anything!
SmittyJon
Silver $$ Contributor
Last week, I put a scope on a newly purchased old gun. Loaded up some test rounds and took it to the range. It shot like crap! Figured I bought a lemon. When I went to clean it, I found the barrel was hitting the stock. Aha! Well, it was touching the stock because the action screws were loose. Aha! I was stupid and didn’t check EVERYTHING!
Do the easy stuff before you buy anything!
You're right Josh. A classic pattern of something loose is a shot that hits one spot, the next one in another, and a third back to the first spot - or it doubles the second. And, it doesn't seem to matter whether it's the rest (or its top), scope rings, something inside the scope, action screws, or a bag or bags with the wobbles, so all of those things have to be checked. I hope the OP finds the problem before investing a lot of money.
Chris Mitchell
urbanrifleman
Site $$ Sponsor
Buying a RPR prefit is becoming as common as a Savage or Renington. Heck, I think Krieger is making rpr prefits now
Last edited by a moderator:
urbanrifleman
Site $$ Sponsor
I bet you have a carbon donut that jb paste will not remove.
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