Velocity Study - Omega X-7 with GOEX & Deep Curls
 

One of my Omega X-7's favorite loads is 95 grains of GOEX FFFg and 300 grain Speer Deep Curls.

I've been wondering what kind of velocities I get with that load in the short barrel of the X-7. So I broke out the chronograph last Saturday and shot four different charges of FFFg.

Here are the results.



Here are the targets, which illustrate why I don't really care about getting the highest velocity but stick with the accurate load.

85 GRAINS


95 GRAINS


105 GRAINS


115 GRAINS

I agree. My Pro Hunter shoots very acceptable at 115 and 120gr of BH but it shoots it's best at 110. I haven't chrono'd them but I have to assume I am getting better ballistics with the 115 and 120 but the 110 just shoots better so that is what I hunt with.

interesting report semi,do you swab between every shot?i also see the higher charges are printing lower on paper.do you have other favorite loads for your X7.i have scoped my new X7 for load development and will then reinstall the peep.so far i really like how this carbine carries/shoulders.it just might replace my triumph for stillhunting if it shoots as well.....karl

Semi, do you use anything other than those 4x scopes?

Any one of those is still minute of deer. Good shooting.

good shooting, and some interesting numbers there. I think they show that people get too excited of velocity. Some of those increases are gaining what.. 100 fps. Even look at what 85 grains deliver VS 115 grains. Ask your self accuracy wise, is it worth it to shoot those extra 10 or 20 grains of powder.

I'm like you Semi, I'd rather have an accurate load than a speedy one any day. Better to hit where you're aiming w/a slower load than have a bullet go screaming by and not hit anything.

Looks like you have a good shooter there as well. I always like the looks of that X7. Great brush gun. (which is 90% of where I hunt)

Jaybez, I have 4X ProDiamonds on the three Sinful Sisters and the X-7, a Tasco 3x9 on the Rescued Remington, and a Leupold 3x9 on the Lyman Mustang.

kb1, in this range session I swabbed with both sides of one alcohol patch between shots. That's what the "2S1AP" notation in the bottom right hand square of the target means.

The X-7 shoots several loads quite well. At the beginning of this range session I shot some 250 grain Deep Curls at 50, 75 and 100 yards with pretty good results (targets below).

50 Yards


75 Yards (I knew I blew that one shot the minute I pulled the trigger. Just didn't have a steady sight picture.)


100 Yards (Don't know why I got that flyer. Everything felt good at every shot.)


I get similar results with Triple 7 and Pyrodex RS.

thanks semi,i also did a quick search and saw your moa targets using t7 and 300g bullets.i'll try BH209 starting @ 80g vol.i have a good supply of 260g nosler partitions and swift A-frames that i hope shoot well ......karl

It will be interesting to see how Blackhorn does for you Karl. I bought one canister of Blackhorn two years ago (still have half of it left) and tried it in the X-7 and Mustang. It did OK for me, but no better than other powders.

Very good "Chooting" there.... :party0005: i really like the 300gr D/C bullets! Ray

Pilgrim

This statement made me curious, so this morning i went up into the hills to see what 115g of BH would do in my X7 pushing the 300g Deep Curl. When i finished shooting it was 26 degrees. The elevation was some over 4600'. The primer was the W209. The clock was located at 10 yard. Three shots.

1896 fps
1902
1893

Shooter calculate the muzzle velocity at near 1928 fps.

That's rocking along pretty good Ron. How was the grouping?

I checked my X-7 file for velocity readings with other powders and found these with the chrono 15 ft. from the muzzle.

115 grains T7 FFG & 300 grain Gold Dot - 1710 fps (1" 3 shot group @ 100 yards)
105 grains T7 FFG & 300 grain Gold Dot - 1670 fps (2" 5 shot group @ 100 yards)
105 Pyrodex RS & 300 grain Gold Dot - 1548 fps (2.75" 5 shot group @ 100 yards)
95 grains T7 FFG & 300 grain Gold Dot - 1624 fps (3.2" 3 shot group @ 100 yards)
85 grains T7 FFG & 300 grain Gold Dot - 1575 fps (1.9" 3 shot group @ 100 yards)
75 grains T7 FFG & 300 grain Gold Dot - 1522 fps (1.4" 3 shot group @ 100 yards)

The group musta been OK; i didn't hit the machine or the sky screens, or the sky screen holders. You think?!?

What i did was shoot at 200 yard this morning, then i clocked 3 shots from the X7 without bothering to align the chronograph with the target. My 200 yard groups were terrible................; the best 5 shots were with the Triumph, and it was 4 1/4"; the X7 group was worse yet, as was the V2 5 shot group.

It appear that one or both of our clock isn't running so very good. It doesn't seem that your 777, and my BH209 speeds should be so different. The thinner air, and cooler temperatures wouldn't affect speed that much would it?

It seems i have read that parts or your country are below sea level, because of the dikes. If so, perhaps you are shooting under water, and that is what is slowing your bullets. 'Eh Pilgrim?!?!?!?

Ain't nowhere near underwater fella. My house is a half mile from the Mississippi River in an area called River Ridge, because the elevation is a FULL TWELVE FEET above sea level.

As for the velocity difference, I'm sure elevation has some effect but have no idea how much. But different barrels could easily account for the difference, as could components. Elevation at the range is somewhere around 225/250 feet. I used H5045SB sabots for all of those readings, and a TC U-View powder measure. Also, I'd bet the readings would be a little higher with T7 FFFG instead of FFG.

Terrible? Maybe for you. I'd settle for that at 200 with no complaints.

Well, my X7 likes to have the H15045BR shoved down his throat, so that could be a difference maker.

My load will just so barely fit into a U-View measure if the stem is pulled all the way; that there is another difference maker.

I had no idea you were so high there; imagine that a FULL TWELVE FEET. You won't have too much trouble acclimating to Batesland it seems.

Are you really sure you aren't shooting under water?!? Sometimes your musings seem it is possible you could be oxygen deprived.

How dare you sir! I ain't ever deprived my musings of anything, you can ask them yourself (and don't believe that lady from the Musings Protection Agency). :s2:

I wonder why the lower charges shot higher then the shots with more powder. I would of thought it would of been the opposite. I would stick with 95 load.

deer, the bullet's dwell time in the barrel is longer with a low velocity load. So the muzzle has risen slightly higher by the time the bullet exits.

It's always been my understanding that recoil does not occur untill the bullet leaves the barrel.

Nope. The same force that begins pushing the bullet forward also begins pushing the stock rearward (equal and opposite).