24hourcampfire.com
24hourcampfire.com
-->
Previous Thread
Next Thread
Print Thread
Hop To
Page 2 of 2 1 2
Joined: Mar 2007
Posts: 503
T
Campfire Regular
Offline
Campfire Regular
T
Joined: Mar 2007
Posts: 503
Please post your results. Inquiring minds want to know. Thanks.

GB1

Joined: Oct 2004
Posts: 25,840
D
Campfire Ranger
Offline
Campfire Ranger
D
Joined: Oct 2004
Posts: 25,840
Originally Posted by BCSteve
Well I tried to just sand off the pressure bumps at the tip of the stock but even with the bumps off there was still pressure at the tip. Even with a little more sanding the pressure was still there. So instead of hogging the channel too much I got the Acraglas out and bedded/floated it.

We'll see if it was the right solution.
Bedding aint ever a bad thing...


My dog is a member of the "Turd Like Clan"

Covert Trail Cameras are JUNK

3 Time Dinkathon Champion #DinkGOAT



Joined: Apr 2007
Posts: 32,312
Campfire 'Bwana
Offline
Campfire 'Bwana
Joined: Apr 2007
Posts: 32,312
Agreed, but my 7-08 Mountain Rifle is a conundrum that way.

If you have a box-stock mountain rifle shooting sub-MOA with several different loads... do you dare touch the damn thing? Other than a trigger adjustment?

I don't <g>.


The CENTER will hold.

Reality, Patriotism,Trump: you can only pick two

FÜCK PUTIN!
Joined: Mar 2005
Posts: 26,219
A
Campfire Ranger
Offline
Campfire Ranger
A
Joined: Mar 2005
Posts: 26,219
Originally Posted by BCSteve
What's the concensus on this one??. I went to the range this morning with last winter's project. A stainless Rem SPS with a .260 Rem take off barrel in mountain contour in a Ti stock. I had tried a few loads in the Spring but wasn't getting the speed I was looking for. This time I tried some 120gr TSX and 140gr Hornady with H414. I got the speed I was looking for but accuracy was in the 3-4".

This is an unproven rifle so I don't know if I should waste more powder and bullets to find a more accurate load or start with a clean slate and bed/float the barrel.

What do you guys do with your Mountain and Ti rifles, float them or keep the pressure point??


I have a stack of M700's--from first year production to 2003 production M700's, from skinny bbls, to sporter weight, to varmint weight bbls--and all my serious huntin' rifles are M700's. With the exception of a couple untouched, older M700's, all of mine are free floated.

But...there has been a few loads that liked a pressure point, but only a few. Generally speaking, free floating seems to be the best approach.


Casey


Casey

Not being married to any particular political party sure makes it a lot easier to look at the world more objectively...
Having said that, MAGA.
Joined: Mar 2005
Posts: 26,219
A
Campfire Ranger
Offline
Campfire Ranger
A
Joined: Mar 2005
Posts: 26,219
Originally Posted by BCSteve
Floating was the first thing that came to mind as well but this is the first "pencil" barrel rifle I've had. I've heard a few times that they do better with some pressure. I wanted to hear from guys that been there and done that.


My fav hunting rifle is a stock M700 ADL Symthetic SS Mountain Rifle (with Mountain bbl contour)from 1994. Action is full bedded, trigger tuned, bbl floated. It rivals my custom bbl rifles in accuracy and the wide variety of bullets/loads it will digest with decent accuracy.

Casey


Casey

Not being married to any particular political party sure makes it a lot easier to look at the world more objectively...
Having said that, MAGA.
IC B2

Joined: Mar 2008
Posts: 889
L
Campfire Regular
Offline
Campfire Regular
L
Joined: Mar 2008
Posts: 889
My huntin buddy has a 700 Mtn rifle in 280 Rem, that shot 2-3" with variuos recipes. The stock cracked thru the wrist and he sent the rifle back to Rem, (he had talked to them prior of course). After sending it to them he was informed it had a bad barrel, and for X dollars he could get a new stock and barrel. He paid the money and got the rifle back with a target that showed a 1" group. Stock has pressure point like the first one. After numerous loads and shooting, we could get nothing like their group. I begged him to float the barrel the first go round and he would not do it, so I hit him again and after some thought he had it free floated. 52.5 grs of A4350 and 139 gr Hornady 1/2" grp. They never said what was wrong with the barrel, but the second one didn't shoot any better than the first one til we floated it. I think if the barrel was bad it should have replaced NC.

Joined: Jul 2004
Posts: 1,665
B
BCSteve Offline OP
Campfire Regular
OP Offline
Campfire Regular
B
Joined: Jul 2004
Posts: 1,665
Well the bedding job turned out good, the second one anyway. I bedded the recoil lug, forward of the mag box and the first inch or so of barrel. The tang is resting solidly on the rear aluminum pillar. I can now slide two dollar bills thick from tip to that first inch. I'm working evenings this week so I'm hoping to go try her one morning.

Joined: Jan 2001
Posts: 28,375
Campfire Ranger
Offline
Campfire Ranger
Joined: Jan 2001
Posts: 28,375
Originally Posted by BCSteve
Maybe I'll try to old credit card under the barrel trick to temporarily free float the barrel to see if it helps before making any drastic change...


Your bedding is already done but thought I'd throw in a tip. (I think you mean credit card under the action to temporarily float the barrel?)

I used to use cut up pieces of business cards but they'd slide around and were a pain to work with. Layers of electrical tape can be built up and are much easier to work with. Of course cutting up credit cards will save money in the long run... wink

I have a Mountain Guide in .308 and floating results are so far somewhat unproven. It was stringing with the factory pressure points, still strung some when the two bumps in the forend were sanded off as the forend still touched. That shows just how much upward pressure they put in at the factory.

Lifted it out of the stock via the electrical tape and that seemed to do the trick, the stringing stopped. So I had it glass bedded and full free floated. Unfortunately the first range trip produced nice round, large groups in the 2 to 2 1/2" range. 'Course, I'm probably one the worst bench shooters in five states, so am going to try this one more time and if it still does that I'm going to have the barrel neutral bedded.

If'n I wanted a lightweight rifle that shoots I probably should'a bought a Tikka to begin with...



Gunnery, gunnery, gunnery.
Hit the target, all else is twaddle!
Joined: Jul 2004
Posts: 1,665
B
BCSteve Offline OP
Campfire Regular
OP Offline
Campfire Regular
B
Joined: Jul 2004
Posts: 1,665
Quote
Your bedding is already done but thought I'd throw in a tip. (I think you mean credit card under the action to temporarily float the barrel?)


Yep, that's what I meant.

I also ran in the same situation you did. I sanded the speed bumps and their was still pressure, sanded a little more, still pressure. Figured their was no turning back, so I bedded and floated it.

Joined: Jun 2006
Posts: 13,401
Campfire Outfitter
Offline
Campfire Outfitter
Joined: Jun 2006
Posts: 13,401
Something that worked for me better than the business card trick is using cut to fit pieces from a 2 liter pop bottle. Those have worked well for me.


“There are some who can live without wild things and some who cannot.”
ALDO LEOPOLD
IC B3

Joined: Mar 2006
Posts: 2,737
Campfire Regular
Offline
Campfire Regular
Joined: Mar 2006
Posts: 2,737
My 700 LSS 270WSM sucked until I floated the barrel! Now she shoots under 1" all day long and if I really try it will do 1/2" with ease!


Disabled American Veteran. U.S. Army 2000 - 2007 Proud to have served.
Joined: Jul 2004
Posts: 1,665
B
BCSteve Offline OP
Campfire Regular
OP Offline
Campfire Regular
B
Joined: Jul 2004
Posts: 1,665
I've got my fingers crossed for a similar result.

Joined: Feb 2004
Posts: 12,651
Campfire Outfitter
Offline
Campfire Outfitter
Joined: Feb 2004
Posts: 12,651
In my experience, pressure points can provide good accuracy (small groups) but as the barrel heats up so does the pressure point and that can move point of impact. Pressure points can also cause POI problems if the stock moves due to ambient temperatures or humidity. The first centerfire rifle I got kept shooting higher and more to the left the longer I shot it. Didn�t realize what was happening and couldn�t get the thing zeroed even though I never let the barrel get hot. Floated the barrel and never had that problem again.

Floating the barrel eliminates POI changes due to changes in the stock but may cause slightly larger groups. This is the route I�ve gone with all my centerfires. Group sizes are still very acceptable with my handloads, usually right around MOA, with some smaller and some larger. Last week I was testing TTSX loads for a Savage .30-06 and they came in at 1.05�.

Bedding is something I�ve never gotten around to and don�t feel any particular need for given the accuracy I get without it. If I was shooting matches or going ultra long (past 600 yards) I might consider it.

By the way, someone mentioned the expense of free-floating a barrel. My cost is generally limited to a couple half-sheets of sandpaper and a few drops of polyurethane. Here�s my method:
1. Remove action from stock.
2. Wrap coarse sandpaper around Magic Marker and sand down barrel channel (usually just the pressure point is all that is needed).
3. Mount action to stock, tighten screws and see if barrel is free-floated.
4. Remove action from stock.
5. Repeat steps 2-4 as needed.
6. Sand barrel channel with finer grade sandpaper if desired.
7. Apply polyurethane to a folded paper towel or rag and apply to freshly exposed wood.
8. Allow polyurethane to dry for 30 minutes and reassemble rifle.

Total time is under an hour and if you don�t count drying time, about 20 minutes.


Coyote Hunter - NRA Patriot Life, NRA Whittington Center Life, GOA, DAD - and I VOTE!

No, I'm not a Ruger bigot - just an unabashed fan of their revolvers, M77's and #1's.

A good .30-06 is a 99% solution.
Joined: Jul 2004
Posts: 13,436
D
DMB Offline
Campfire Outfitter
Offline
Campfire Outfitter
D
Joined: Jul 2004
Posts: 13,436
I was born free floated... grin
Float the barrel... grin
First thing I do when I get a new rifle is open up the barrel channel to float the barrel, before I shoot it.
For collector's rifles, I just leave them as is however.


Don Buckbee

JPFO
NRA Benefactor Member
NSSA Life Member






Joined: Dec 2003
Posts: 5,950
Campfire Tracker
Offline
Campfire Tracker
Joined: Dec 2003
Posts: 5,950
Originally Posted by Coyote_Hunter
In my experience, pressure points can provide good accuracy (small groups) but as the barrel heats up so does the pressure point and that can move point of impact. Pressure points can also cause POI problems if the stock moves due to ambient temperatures or humidity. The first centerfire rifle I got kept shooting higher and more to the left the longer I shot it. Didn�t realize what was happening and couldn�t get the thing zeroed even though I never let the barrel get hot. Floated the barrel and never had that problem again.

Floating the barrel eliminates POI changes due to changes in the stock but may cause slightly larger groups. This is the route I�ve gone with all my centerfires. Group sizes are still very acceptable with my handloads, usually right around MOA, with some smaller and some larger. Last week I was testing TTSX loads for a Savage .30-06 and they came in at 1.05�.

Bedding is something I�ve never gotten around to and don�t feel any particular need for given the accuracy I get without it. If I was shooting matches or going ultra long (past 600 yards) I might consider it.

By the way, someone mentioned the expense of free-floating a barrel. My cost is generally limited to a couple half-sheets of sandpaper and a few drops of polyurethane. Here�s my method:
1. Remove action from stock.
2. Wrap coarse sandpaper around Magic Marker and sand down barrel channel (usually just the pressure point is all that is needed).
3. Mount action to stock, tighten screws and see if barrel is free-floated.
4. Remove action from stock.
5. Repeat steps 2-4 as needed.
6. Sand barrel channel with finer grade sandpaper if desired.
7. Apply polyurethane to a folded paper towel or rag and apply to freshly exposed wood.
8. Allow polyurethane to dry for 30 minutes and reassemble rifle.

Total time is under an hour and if you don�t count drying time, about 20 minutes.


This post mirrors my experience and thoughts almost exactly. I will add a couple comments though.

When using barrel/stock pressure points, it is critical that it be done correctly: Not too much or too little pressure; Not "ambiguous" contact (either touch firmly and evenly, or not at all); Do not allow any side-to-side motion between barrel and stock. Shooting technique is critical. You must hold the rifle the same way for every shot for best accuracy/consistency because variations in the way the stock is held/supported will affect the stock, which affects the barrel that is in contact with the stock. The stiffer and more weather-resistant the stock, the better the results with stock/barrel pressure. When I setup a stock for barrel pressure, I use two pressure points at the 4:30 and 7:30 clock positions on the barrel. This cradles the barrel like a V-block and eliminates side-to-side movement between stock and barrel. IME, as a general "rule", stock/barrel pressure setups usually shoot better with heavier bullets, and free-floated barrels usually shoot better with lighter bullets, but please don't blame me if it doesn't work out that way for you.

As CH stated, a free-floated barrel is probably the best setup if your rifle and chosen load shoot well with it. Free-floating minimizes changes in POI due to changes in the stock. Just make sure the barrel really is free-floated and does not touch the stock at any point. If you're floating the barrel on a rifle with a good, stiff synthetic stock, you can get by with just enough gap to pass the ol' dollar bill test (or double dollar bill test). But if the rifle you're floating has a wooden stock, make the gap wide enough to accomodate some dimensional changes in the stock due to weather or age. Wood stocks move. If you want to see a good example of how much gap to create, look at a Kimber 84M rifle. Even so, I have seen Kimbers with enough stock warpage to cause the forend to touch the barrel. I know most guys hate a big gap, but if you carry your rifle 10 miles into the wet wilderness, and the stock warps and touches the barrel, it could cost you a trophy. It's up to you.

If you have floated a barrel and found that the rifle does not shoot as well as it did with stock/barrel pressure, don't worry. It is possible to change a floated barrel back to stock/barrel contact. To do this, first install temporary shims and shoot the rifle to determine what thickness of shims shoot best (don't forget: Two shims work best, at 4:30 and 7:30 clock positions to cradle the barrel). Once the correct thickness is determined, a more permanent shim can be installed. I have used business cards, playing cards, and other materials for the temporary shims. If the permanent shim is too thick at first, it can be sanded to reduce the thickness.

-


Our God reigns.
Harrumph!!!
I often use quick reply. My posts are not directed toward any specific person unless I mention them by name.
Joined: Aug 2002
Posts: 14,463
S
Campfire Outfitter
Offline
Campfire Outfitter
S
Joined: Aug 2002
Posts: 14,463
Outside of heavy varmint or sendero barrels I always leave the pressure points on and get sub-moa accuracy.

I think the trigger is more of a factor.


Page 2 of 2 1 2

Moderated by  RickBin 

Link Copied to Clipboard
AX24

70 members (14idaho, 406_SBC, 907brass, 44automag, 10gaugemag, 13 invisible), 1,461 guests, and 793 robots.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums81
Topics1,191,387
Posts18,469,724
Members73,931
Most Online11,491
Jul 7th, 2023


 


Fish & Game Departments | Solunar Tables | Mission Statement | Privacy Policy | Contact Us | DMCA
Hunting | Fishing | Camping | Backpacking | Reloading | Campfire Forums | Gear Shop
Copyright © 2000-2024 24hourcampfire.com, Inc. All Rights Reserved.



Powered by UBB.threads™ PHP Forum Software 7.7.5
(Release build 20201027)
Responsive Width:

PHP: 7.3.33 Page Time: 0.092s Queries: 15 (0.003s) Memory: 0.8859 MB (Peak: 1.0255 MB) Data Comp: Zlib Server Time: 2024-04-26 07:55:26 UTC
Valid HTML 5 and Valid CSS