#1
|
|||
|
|||
Guys, Just finished this one up. It's a 20/250 set-up to shoot the 55 gr Bergers.
Last edited by 410gauge; 09-10-2018 at 06:55 PM. |
#2
|
|||
|
|||
Great looking rig. Would be nice to know what it does at 500 yards plus!!!
|
#3
|
|||
|
|||
It's a little surprising you're getting that kind of results shooting the 55's out of a 1-10tw. Curious, what elevation are you shooting from? I'm going to guess you're a few thousand feet above sea level which could help explain why that 1-10 is working for you but maybe not.
I have a 20-250 build it the works right now that will be finishing up a little after the first of the year but I went with a 1-8tw Krieger to be safe at all elevations. Have you considered trying any RL16? I think RL16 will yield a little better velocity and be more temp stable than RL15. |
#4
|
|||
|
|||
Quote:
Agreed, these 20-250's are not going to be long with barrel life that is for sure which is why, shortly, after I had my gunsmith order the first barrel, I had him go ahead and get another one on order. |
#5
|
|||
|
|||
Quote:
Bob Dodd still owes me $150 bucks which he refused to pay back, speaking of paybacks, lol. Keep us posted how the bullets are holding together in about 300 rounds. Looks like a shooter, is the good news! |
#6
|
|||
|
|||
Quote:
When I wanted a repeater for tactical matches I sold them. I bought a M700 and had to back off pressure until I got Gre-tan to bush the bolt, then back to higher pressure with 115's at 3000 fps. My load now is at 3172 fps in a 28" using a Mausingfield action. The Mausingfields have a super hard bolt head so I don't expect problems. With 22-250 brass, the brass will let you know about pressure sooner than the x47L brass will so you'll probably be fine. But that's interesting the RFD bolt was hard, maybe he used harder steel once he realized there was a problem, don't know. Yes, other than that the RFD's were a nice action. Bob, not so much. |
#7
|
|||
|
|||
Nice to see RL15 worked for you Dave. Theres alot of debate about what twist for the 55"s you and I have spoke about it. My 9 works awesome. My personal feeling is a 9 is plenty for the big 20's if you need a faster twist for a slower 20 then a 39-40 would be a better fit because the velocity loss versus B.C gain is a wash or loss unless of course you just wanna do it. Anyway just my 2 cents.
|
#8
|
|||
|
|||
Rl17
Beware of the pressures of RL17! It is a pretty good powder, but it's the most
temp sensitive of any I have tried. I had unbelievable velocity differences from cool to hot temps in a lot larger capacity case, the .25-06. |
#9
|
|||
|
|||
I had a 20 dasher done last year with a 28 inch long 9 twist lilja. I've got the 55gn bergers at 3780 but read a disturbing post on a US site that the user had to back off to 3600fps after the pills started to disintegrate when his barrel got to 150 rounds
So I thought I might email berger They recommended 3400fps as the max speed for the 55. I'm up to about 200 rounds. Hope it keeps shooting |
#10
|
|||
|
|||
I shoot my 20-250AI , 8 tw, all the time around the 3770 area with 55 bergers and have never had one puff. It will shoot hotter loads, but the accuracy is best at this speed. It will keep them in a cigarette pack at 600 yds.
Longest kill so far, was tipping over a coyote at 631 yds with a chest shot... I still can't believe I hit him that far on the first shot...LOL. I LOVE THIS CALIBER... LOVE IT LOVE IT LOVE IT Kinda like it too....LOL. |
Thread Tools | |
Display Modes | |
|
|