Scott Gags

Ridge you have got to cut me a break here. Federal lists factory 200 grain partitions at 3070 FPS and that is from a 24" barrel.That factory load could actually run close to the 3200 FPS velocity in a 26" tube, must less a handload taylored to a specific rifle.My buddychronyd 3200 with the 200 grain accubond in his 26" Krieger custom gun, and his backup savage rifleprior toour elk hunt two years ago. He loadedwith Retumbo and never saw pressure signs, that is just what shot best.

bigcountry

Actually, I have the Rifle Magizine edition with Layne talking about accuracy from 1992 (or 87??)I think. According to the article, he says, about 2K is all you can expect starting with subMOA and going down to 1.5-2MOA.

fariswm

You know- if I shoot three shots through my .308 in rapid succession the barrel is hot.

What are you going to do with this rifle? Is this for hunting? If it is are you going to be shooting long range?

Do you plan on shooting a lot? Most people who hunt, have no need of a weapon that has more than a 1500 round barrel life.

If you want to discuss the full capability of this cartridge, I suggest you log onto: longrangehunting.com and register there and ask those guys. They will tune you up in a hurry on the merits of the 7mm RUM.

fariswm

I just read through all the threads today and sounds like you are what the doctor ordered here.

Scott Gags

I have not found that to be the case I typically see numbers around 50-75 fps off the advertised.

I take this post aboveas you are implyingI am misleading this forum.I feel very strongly that 3200 FPS is what the 300 reaches. You quoted a velocity fromHodgdon earlier of 2910 for the 300 RUMso I know that you must have great faith in that publication unlike the Federal factory ammo. Only problem is the velocity listed in that manual is 3048 fps not 2910, and that is in a 24" barrel. Now I have learned a great deal from your barrel length in overbore caseslecture in the last postand it wouldseem 76FPS per inch in an overbore rifle to actually be quite reasonable would it not? Or are the Hodgdon numbers now bad since they dispel your premise.

I think I have a handle on the effect of barrel length and velocity that is whyI questioned the barrel lengthwhen you made your orginal Allen mag velocity claim. I notice you have still notprovided thebarrel lengthto this forum.Also overbore is a relative term theAllen has a larger case andsmaller bore which makes it by definition more overbore and more dependant on barrel length.That in my opinion is a negative for that cartridge.
I do not agree with the premise "the only way to increase velocity at the same pressure is to use a longer barrel". When you increase the bore diameter the same pressure is now exerted on a larger area. This will actually increase the force exerted on a bulletthe same way ahydrolic cylinder works. That is whyyou see velocity increases in equal weight bullets as the bore diameter increasedin the 30-06 family of cases from the 25 06 to the 35 Whelen.

okgobbler

Tyler15, Have you shot any full load magnum's in a standard weight rifle. You might want to consider that the recoil is going to be pretty stout. I'm try to work up a light load for my 7mm rem mag right now, because until I go elk hunting someday, I don't need the extra speed, energy, or recoil for a whitetail out to 300 yds. By the way 300 yds is a long shot on a game animal. And probably should not be attempted, if you do not practice at 200, 300, 400regularly.

Ridgerunner does practice and knows his equipment and loads quite well. I have only killed one animal at 300+ yds and it was a p-dog at 316 yds with my .243. My 3 favorite deer rifles are my .243, .308, and 35 whelen, depending on where I am hunting. The furtherest deer I have ever killed was at about 200 yds and I usually hunton the ground at the edge of wheat and alfalfa fieldsthat are anywhere from 40 to 320 acres.

Not trying totalk down the ultra mags, but a standard cartridge in a .270, 7mm08, 280, 308, 30-06 isplenty ofgun to take down deer and elk at reasonable ranges.

Will your friend let you shoot it first?By the way, ammo run $40-$50 a box. Good luck in your decision.

bigcountry

I have had 3 300RUM's, one with a krieger, and custom built, and have yet to get a 200gr bullet up to 3200fps. But then again, I will not quote hodgdon or federal. Only my own Chrono.

And I bet I have shot more 300RUM shots than anyone on this board, besides stubble. I burned out two barrels.

Scott Gags

Ridge that post above is a weakattempt at best to split hairs. Only problem is you are wrong again. As I had posted earlierthe Hogdon manual lists 3048 for the accubond bullet with 95.5 grains of Rutumbo. Now I resubmit my post below:

To further use your own references to prove my point I took your advise and went to LRH these are the guys according to you "that know", apparently you feel, unlike the guys on this forum. Well guess what I found. A post specifically on 200 grain accubonds and Rutumbo powder that had 3 of 4 posted velocities reaching 3200 FPS with 26" barrels. I have the link below:

http://www.longrangehunting.com/forums/f17/300-rum-200-gr-ab-26590/

You know I just realized. That is the actually the same bullet and load that I referenced and your "guys that know" are also referencing the same exact load with the same results!!! Your post below was in response to my reference to that load.

You should perhaps send"the guys that know"a post on LRH and say they are full of BS too!

bigcountry

I got an easy way to settle this. Scott, do you have said load, with said powder, and a chronograph? Do you have a 300RUM with a 26" barrel? If not, then your sure not right either. If yes, and can prove it, then post away.

I think thier should be a rule on these pages, that if you don't have the firearm or if you have not loaded it, then don't post.

Scott Gags

You arestating as factthat they are min spec chambers. Minimum chamber dimensions have an effect in velocities primarily in factory ammo by slightly increasing barrel pressures. In the case of handloading this is not necessarily the case as the handloader in many loads can add 1/2 grain of additional powder in a larger dimensioned rifle and achieve the same velocity.You state that the "guysthat know" are shooting min spec chambers but you actually have no idea what their chamber dimensions are. I kinow this because the post specifically states

I seriously doubt that is a min dimension chamber. I think they are just full of BS like me.