300 RUM and retumbo

justgoharder

Well-Known Member
Joined
Sep 17, 2005
Messages
153
Location
Colorado
I've worked up a very accurate load with my rum using 200gn accubonds and 95gn of retumbo. I started with a low charge and worked my way up. the groups really started coming out tighter and tighter as i went up in charge load. i settled on 95 gn and since then I've fired about 35 rounds with the 95gn charge using fed 215m primers. I haven't noticed anything odd; no stiff bolt, loose primers etc...however yesterday i took the rifle out to shoot it over the chrony a few times. i fired 6 rounds at 8215ft altitude, 29.20 pressure. 38' f. the es of the 6 shots was 23ft/s and the average was 3265! doesn't this seem a bit high for a 26" barrel??? the load isn't compressed but is probably pretty close. maybe my chrony is just way off?
 

MontanaRifleman

Well-Known Member
Joined
May 21, 2008
Messages
6,194
Location
South of Canada and North of Wyoming
It might be your chrony. I worked up a load with 200 AB's and 96 gr of Retumbo and have seen velocities ranging from 3250 to 3300 plus, (no excessive pressure signs) 26" barrel. I think some of the reading are off. I have a Pact Alpha and it seems to give different reading depending on angle of sun, clouds, shade, etc.

8200' is a pretty high rifle range....

Mark
 
Last edited:

Trending threads

Nightforce has great tracking capabilities, they are rugged, a bunch of elevation, holds zero forever, and reticles are designed for long range shooting. So if you are looking to shoot long distances constantly, then you need a scope that can take the abuse. -- gilmillan1


Culture Of Excellence At Nightforce Optics
By Len Backus

A high level of quality both in production and in service. Read More


Nightforce is such a solid combo of reticle, available elevation, glass that is good enough to shoot at the longest range you can dial. Nightforce has bullet proof construction that can handle the incidental horse rolling or some other rodeo action. -- bigngreen


Nightforce ATACR Scope Review
By Jeff Brozovich

The new NightForce ATACR is for sure a top choice for any long range shooter. Read More


The total package. Nightforce is the best I have used as far as turret feel and solid detents. I have never had one that didn't track right on and always return to zero. Nightforce NXS is the best value for everything I need. -- Broz


Nightforce Velocity 1000 Reticle Review
By Scott Shreve

I think Nightforce knocked it outta the park with this reticle! Read More

NightForce


Top