Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels and Ballistics


Reply

338 cal 265grn wildcat bullet test

 
LinkBack Thread Tools Display Modes
  #1  
Old 08-12-2007, 10:26 PM
Gold Member
 
Join Date: Sep 2003
Location: Nebraska
Posts: 811
338 cal 265grn wildcat bullet test

I got some of Richards bullets to test in my 338 Snipe-Tac, he sent 265gn and 300grn bullets. I dont think the 300's will work in my bbl so i didnt fire any of those yet.

I loaded up 6 rounds to sight in with at 100yds, the gun was sighted with 300MK's dead on. The first group was 2" high, about 1" three shots. I lowered the scope 2 MOA, next group was dead center but about 1 1/4" size.
Not what i was hoping for as the SMK bullets shoot in the low .2's. I figured the slower twist im using is causing the problem. The bullet holes are round so that was a plus. The initial loads were 145grns of H-BMG50, that produced 3500fps. The cases ejected easy but the primers were just a bit flatened.

I talked with Barney Lawton about my tests and he said if the holes were round then there prolly is a load that will make the bullets work. I pondered, maybe im driving them to fast? Sometimes 100yd groups are very decieving, what shoots good at 100 dont nessesarly shoot good at long distances, and visa versa. So i decided to do a long range test to see how the groups react.

I lasered a distance and set up a target stand, 703 yards. I loaded up three different powders, all are a bit different in burn rates. fastest to slowest,
US869....H-BMG50...WC872
I have used all three of these in testing with the 300MK, the 265 Alum tipped bullet has a long baring surface so the same loads were used to start with.

My gun loves WC872 with the 300MK, 143grns = 3300fps
Test rifle
Viersco stainless repeater action
Lone Wolf carbon stock
Lawton 33" 1-11.25 twist bbl
30moa base
IOR 6-24x50 35mm tube scope
---------------------------------
I loaded up three 143 WC872
Testing:
Average speed, 3400fps
SD 16
Group size 703yds 7"
--------------------------------
Next test group
140grns WC872
Speed 3337
SD 9
Group size 703yds 6"
--------------------------------
H-BMG 50 powder
140grns
Speed 3407
SD 18
Group size 703 6"
--------------------------------
H-BMG 50
142grns
speed 3450
SD 9
Group size 703yds 4.5"
--------------------------------
US869 powder
140grns
speed 3437
SD 3
Group size 3.2"
----------------------------------
The faster burning powders seemed to do a better job accuracy wise. Several groups were at or just under 1/2 moa at the 703 yard target.
All loads were tested with TTi armory brass.

The Exbal program was very close in predicting the needed MOA, tests ranged from 7 moa to 8moa, depending on the load used. Every test shot found the target, it was a 2 foot square target board.





I also tested the accuracy of my small chrono vs the Ohler 34, They were with in 8-10 fps on every shot.

My next test i will set up the chrono at 700yds and see what the speed is at that distance.

there will be some test results coming with a faster twist barrel and the 300grn AT Wildcats.

Dave
__________________
www.cowboy-dave.com

"Let the good times roll"
Reply With Quote
  #2  
Old 08-13-2007, 01:00 AM
Silver Member
 
Join Date: Aug 2006
Location: Hatchet City, AB,Canada
Posts: 232
Right on.. I love hearing about these new bullets and how well they seem to work so far..

Keep the info coming please..
__________________
Blygy
Reply With Quote
  #3  
Old 08-13-2007, 01:59 AM
Platinum Member
 
Join Date: Feb 2005
Location: Nevada
Posts: 2,782
Black Diamond 408,

Good work! Nice reading. What model is the small chrono?
I hope you don't shoot it to pieces.
I can see me doing something like that!
Good luck! Thanks for sharing and keep it coming!
__________________
-----------------------------

-----------------------------
HEBREWS 13:8
Jesus Christ the same yesterday, and to day, and for ever.

Our Lord Jesus said that as it was in the days of Noah and
also as it was in the days of Lot so it shall be in the days...
It's happening again!!! God sent to us His prophet, and His Word
to this generation and we once more are rejecting it as was prophesied!!!

---> As promised, God Sent His Prophet to us!
Reply With Quote
  #4  
Old 08-13-2007, 06:38 AM
Platinum Member
 
Join Date: Jun 2001
Location: Potomac River
Posts: 5,060
Half MOA at 700 yards at 3437fps sounds like a fine load to me
__________________
The Smokin Fur Rifle Club
Reply With Quote
  #5  
Old 08-13-2007, 07:21 AM
Platinum Member
 
Join Date: Feb 2005
Location: USA
Posts: 2,598
US869 powder
140grns
speed 3437
SD 3
Group size 3.2" at 703 yards is .435 MOA I think she is starting to come around....
__________________
range it,check the wind, dial in correction, aim and only one shot
Reply With Quote
  #6  
Old 08-13-2007, 09:01 AM
Platinum Member
 
Join Date: Jan 2004
Location: Blackfoot, Idaho
Posts: 8,117
Bad to the bone! Both lookin' and shootin'
__________________
I may be the slowest guy on the mountain . . . . but . . . . I'm on the mountain!
Reply With Quote
  #7  
Old 08-13-2007, 09:10 AM
Gold Member
 
Join Date: Sep 2003
Location: Nebraska
Posts: 811
Eaglet,

Its a Prochrono Plus...dont know much more than that. Seems to be accurate for a little portable.
__________________
www.cowboy-dave.com

"Let the good times roll"
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: 338 cal 265grn wildcat bullet test
Thread Thread Starter Forum Replies Last Post
Wildcat bullet BC RH300UM Rifles, Bullets, Barrels and Ballistics 11 01-17-2012 07:05 PM
New Aluminum tipped Wildcat Bullet test results..... Fiftydriver Rifles, Bullets, Barrels and Ballistics 21 06-19-2007 08:07 AM
175 WILDCAT LADDER AND GAME TEST älg Rifles, Bullets, Barrels and Ballistics 5 05-20-2006 03:36 PM
270WSM 169.5grn Wildcat range test 270WSM Reloading 28 11-29-2005 09:40 PM
First Velocity test with the Wildcat .224" 100 gr ULD RBBT..... Fiftydriver Rifles, Bullets, Barrels and Ballistics 9 09-21-2005 05:00 PM


All times are GMT -5. The time now is 11:39 PM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC