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View Full Version : First day shooting with my OLL


1norcalvarmintHunter
02-25-2007, 10:08 AM
WOW!

I am amazed at the accuracy, comfort and ease of shootinh my OLL.

I built a lars grizzly lower, RRA 24" varmint upper 1:12 twist, leopuld rings, bushnell 4-12 AO scope and a harris bi pod.

I went out and worked up 3 different hand loads. I think I will bump up loads 1 and 2. Load 3 doesnt do to well for me cause it is a much longer projectile, i think i will try the dead coyote 70grn bullets they are supposed to be same size as a 55grn bullet.


Note all cases lc brass and cci 450 mag primer

Load 1.

Hornady V max 50 grain moly
H-335 pdr. 25.0 gr
avg velocity 3075
avg group @ .4" 100 yds.

Load 2.
Hornady sx 55 grain
H-335 pdr. 24.5 gr
avg velocity 3033
spread 120 fps
standard dev. 33
avg group @ .5" 100 yds.

Load 3.
Speer 62 grain sp
H-335 pdr. 24.5 gr
avg velocity 2990
spread 90 fps
standard dev. 25
avg group @ 1.2" 100 yds.

No signs of pressure on all loads, I did notice that my over all length of the cases was 1.7480" even though I sized and trimmed them to 1.749~1.748. I guess the necks didnít stretch too much.

koiloco
02-25-2007, 11:09 AM
scrap the the 62 grain bullets and send them my way. I'll use them in my 1 - 8 twist :)

your barrel twist will be the most accurate with 50 and 55
(50 in my personal experience)

what do you use to measure powder? it seems that your spread is because of that. Regardless, average of .4" at 100 yard is already damn good. I am not sure you could improve that any further.

fairfaxjim
02-25-2007, 11:34 AM
Thanks for the info. Please keep us posted on your tests. I am using a DPMS 24" bull barrel 1:9 upper. I am curious, the 50 & 55 grain bullets that you are using do not have a cannelure, and I have been sticking to only bullets that have them for semi-auto use. Is it ok to use non cannelure bullets for semi-auto?

1norcalvarmintHunter
02-25-2007, 1:48 PM
thanks guys,

I use a micrometer style powder dispenser it is either lymann or forster? Uncle gave it to me. I believe my spread is a flashole uniformity issue. meaning i need to get flashole tool and chamfer the military brass. i also found that my powder dispenser needed to be cleaned a little bit, now the charges are more uniform.

Fairfaxjim,

non cannelured bullets are aok for semi auto. I use vmax and old sx hornady bullets.

If you guys want some 62 grn bullets let me know.

Alanski56
02-25-2007, 2:01 PM
Thanks for the info. Please keep us posted on your tests. I am using a DPMS 24" bull barrel 1:9 upper. I am curious, the 50 & 55 grain bullets that you are using do not have a cannelure, and I have been sticking to only bullets that have them for semi-auto use. Is it ok to use non cannelure bullets for semi-auto?

You can absolutely use non cannelured bullets for your semi auto. I do it all the time. As a matter of fact, I don't use cannelured bullets in .223 at all. I use Hornady V-Max, Nosler Ballistic Tips and Sierra Matchkings for the most part. No cannelures and never a problem.

Santa Cruz Armory
02-25-2007, 2:04 PM
thanks guys,

If you guys want some 62 grn bullets let me know.

Well, if you're just tossin' 'em out ! :D I'll take the 62 gr.bullets

fairfaxjim
02-25-2007, 3:09 PM
You can absolutely use non cannelured bullets for your semi auto. I do it all the time. As a matter of fact, I don't use cannelured bullets in .223 at all. I use Hornady V-Max, Nosler Ballistic Tips and Sierra Matchkings for the most part. No cannelures and never a problem.
Great, thanks for the feedback guys. I guess I just picked that up from the guy that showed me how to do it, he insisted on me getting cannelured bullets for .223. That opens up a lot of bullets to play with.

1norcalvarmintHunter
02-25-2007, 3:28 PM
Well, if you're just tossin' 'em out ! :D I'll take the 62 gr.bullets

you pick em up and they are yours!

Santa Cruz Armory
02-25-2007, 11:16 PM
you pick em up and they are yours!

Where are you located?

Santa Cruz Armory
02-26-2007, 10:00 PM
Well, if you're just tossin' 'em out ! :D I'll take the 62 gr.bullets

Where are you located?

I'll pay shipping...if it's reasonable. :D

Socal858
02-26-2007, 10:09 PM
if neither of these guys take em ill pay you for them! and shipping! lol