12-18-2011, 01:25 PM
sgt_murf Wrote:On another post I have mentioned how my ER Shaw Grendel was shooting .. I decided to do a self check, I have an orginal Remmy 721 in 30-06 except for the Leupold 4-12 power Varix-I newer model yah the friction knobs version. The 721 was discontinued in 1962 when the 700 was introduced, my pawn shop bought Remmy was manufactured in Aug of 1951 according to the barrel code.
Loaded up some of the OLD match rounds recipe for the M1 Garand - 174 gr JLK VLDs over 47 gr of IMR 4064 at 0.015" off the Lands (case was LC 67 Match CCIMag Primers) was one loading used the same bullet over 47.5 grs at 0.005" off the lands.
Any way fired several strings of 10 shots each at 100 yds results for the 47.0 grs produced a consistant 3/4" (measured outside to outside) for ten shots off the bench the other loading produced a clean 1" even measured the same way for 10 shots each. the barrel was way warmed up outta that old bolt gun. Funny thing is this weapon has NO modifaction since the day it left Remington with the factory 22" barrel. Just wish the Grendel bolt barrel combo I received would hold as well. needless to say I was pleased with the old 61 year old girl she went through 200 rounds with heated barrel holding sub -MOA all day. My 13 year old crawled behind her and had the same results after a bit of coaching and holds and trigger squeeze.
Murf:
I have always contended that you may not get that magical (and somewhat mythical) 1/2 minute consistency with a .30 caliber (.308 or 30-06) but I bet you will get a very consistent 3/4 to 1 MOA with them given a good bullet. In fact, you could go down to 44 grains of what ever powder you were using, or most any powder that is safe for the cartridge, and any primer / brass -- or go to 48 grains and the results would be the same.
Gas guns and the bets are off but a decent .30 caliber match grade gas gun is more forgiving than any other caliber I have found.
ER Shaw seems to make their name on producing hunting quality barrels. Nothing on their web site leads me to believe they want to make any sort of match grade barrel.
I still contend that if your Grendel will not shoot when using a 120 SMK and any safe load of powder, the barrel is probably lousy.
Some Shaws seem to shoot well but mostly the guys saying so don't shoot them past 100 or if they do, not enough for the results to be accurate.
LW barrels are pretty good for the price. Not a Krieger but you will notice them to be significantly more dependable than a Shaw.
LR55