338L improved ??

Jeffvn

Gunny Sergeant
Apr 26, 2004
1,182
3
38
59
Las Vegas, NV
#3
I got 3,000 fps from my older 10 twist (30" tube), when i swapped to a new 9.3 Bartlein (30" tube), 3k showed too much pressure during the load development, so i dropped to 2,950+. Shoots great at this spot, so I don't really miss the extra velocity.

Jeffvn
 
Nov 9, 2012
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#5
Thanks guy's. I was expecting more fps. Well, no sence in me opening up mine to an ai. I am getting 2900 with 300 gr otm's
 

Tjfarmer

Farmer Guy
Feb 15, 2017
155
19
18
Illinois
#6
I’d be careful with 2900 with 300 otm in std Lapua unless your running a long freebore or 38” barrel, you have to be way over pressure. Or your chrony is off.
 

Jeffvn

Gunny Sergeant
Apr 26, 2004
1,182
3
38
59
Las Vegas, NV
#11
I could never get anything near that velocity from my .338 l.M., but I loaded everything to feed and be mag length (so the big pills were pushed way back in the case).

Jeffvn
 

Skookum

Knuckle Dragger
May 6, 2017
277
183
43
#13
Im running a 338 Allen Xpress with a 35* shoulder. 300 Berger OTM and106g of IMR 8133 gets me 3160 from a 36 inch tube @ 60*F.
 
Dec 7, 2012
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#14
I would think if you want to up your FPS... And that is important to you ... Try Reloader 33 or N570 over H1000.. The N570 is just hard to to find 99% of the time... Why do all the load work up for powder that isn't available when you need it. so I would go with the RL 33...JMO ... Dave
 
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