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Post by deadon on Feb 28, 2010 19:28:38 GMT -5
Does anyone have any idea how many rounds can be fired through a stock pre 64 mod 70 243. I love to shoot this rifle but I will pace myself if only a few hundred rounds can be shot before the group start goin to C@#$. I have heard of custom `barrels only getting 14 or 15 hundred rounds thru them before they need replacing. My load is 40.5 grs of 4350 under a 95 gr nos bal tip using cci br primers> Thanks in advance
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Post by deadeye on Feb 28, 2010 20:26:37 GMT -5
barrels burnout(throat erosion) not wear out unless bad cleaning techniques or abuse elsewhere. your heavy bullet load will be probably be mild on the throat,prior history can play a role,are you 1st owner. benchrest speaking probably around 1500-2000rds, above average accuracy (non-benchrest) say 5,000-10,000 or so. i love the pre/64/70's
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Post by rossman40 on Feb 28, 2010 23:47:08 GMT -5
I have to agree with Deadeye. You can do your part by not overheating the barrel, not shooting max loads all the time, your already using 4350 which is a single base and not one of the hotter double base powders like Reloader. And of course good maintenance practices. You can use like a Stoney Point overall length gauge to monitor wear if your going to shoot a lot plus you can adjust your OAL to keep up on the lands to compensate for throat erosion.
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Post by artjr338wm on Mar 1, 2010 0:24:46 GMT -5
You have received excellent advice so far and allow me to add this. My all time favorite most accurate rifle I own and it is also the most accurate factory rifle I have ever personally seen is my .338wm, M700 in stainless steel W/synthetic stock. It absolutely loves big, compressed max charges of RL-19. Shoots no BS bet winning five shot 100yrd groups at or below 1".
As rossman so expertly put it Reloader is a double based powder that burns hot. To avoid excessive wear on my beloved 338wm I shoot reduced loads using single based hand gun powder and quite affordable Hornady Interloks out of it.
This combo makes for a extremely cheap to shoot very accurate (MOA or better) load that is quite light recoiling, and is easy on my barrel to boot. I have shot it at both 100 & 200yrds, but the drop is getting kinda much for 300yrds but you can shoot it that far you just need to place a target low enough to catch your bullets POI.
IIRC I was getting around 2200-2300 FPS but I am not sure on that. I got my reloading info by goggling "reduced rifle loads using hand gun powder" or something similar. I use and shoot reduced loads out of all three of my belted magnums.
If you are interested in trying this, as always proceed with caution and use at your own risk. It is a quite common practice, but IMHO not recommended for a novice reloader.
Hope this was helpfull, Arthur.
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Post by deadon on Mar 6, 2010 11:02:44 GMT -5
I love to shoot ,but I am still a hunter first.There is no one in my hunt club that believes that as much as I shoot but it is still a fact. Every important shot is on a cold barrel. I shoot one shot at a time not allowing the barrel to heat up.Once in a great while I will shoot a three shot string but very rarely.Are you saying with my load and my shooting routine,I could get 5 to 10 thousand rounds thru this rifle? Thanks again
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Post by dannoboone on Mar 6, 2010 14:23:13 GMT -5
Here is a real good read about the .243 cartridge, it's barrel-burner "qualities", and how to extend barrel life with your powder choices: www.6mmbr.com/243Win.html
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