My Micro lags behind my Matrix a lot

[XB I GO]

In theory my Mag 340 should be only 40FPS slower than my Matrix 380 with the same weight bolt. My Mag340 bolt is 410 grains (Factory Quill, Luminock, 150 grain BH) and my Matrix 380 bolt is 475 grain (18" BEZS, 110 grain insert, Luminock, 150 grain BH). Even with the much heavier bolt the Matrix 380 is WAY faster than the Mag 340. It is still like 70 FPS faster! I want confidence that I will get a pass-through on animals. So far shooting bags, milk jugs and even animals, the Mag 340 penetrates much less than the Matrix. I was about to put 110 grain inserts in my Quills when I figured this out. Also serious about a TwinStrike but don't want the 360 FPS factory spec with Quills to be the same situation. What do I do to increase the speed and penetration from the Mag 340?

[Boo]

In theory my Mag 340 should be only 40FPS slower than my Matrix 380 with the same weight bolt. My Mag340 bolt is 410 grains (Factory Quill, Luminock, 150 grain BH) and my Matrix 380 bolt is 475 grain (18" BEZS, 110 grain insert, Luminock, 150 grain BH). Even with the much heavier bolt the Matrix 380 is WAY faster than the Mag 340. It is still like 70 FPS faster! I want confidence that I will get a pass-through on animals. So far shooting bags, milk jugs and even animals, the Mag 340 penetrates much less than the Matrix. I was about to put 110 grain inserts in my Quills when I figured this out. Also serious about a TwinStrike but don't want the 360 FPS factory spec with Quills to be the same situation. What do I do to increase the speed and penetration from the Mag 340?

Trade it in for a 400 Suppressor or wait to see what new models are coming.

[wheelsquad]

Do you have real chrono numbers showing the 70 fps difference? That almost seems not possible, especially considering the Matrix 380 is shooting a 65gr heavier arrow.

[Bcxbow]

XB

My micro mag 340 Chrono's 317fps with 405gr zombie so you have something to compare with and in my experiences the M380's all run a little "hot"

[vixenmaster]

You will have to go to a faster model Micro ! No other way around it. Depending on the B-heads you use will help or hinder. Fixed that are sharp will get you pass-throughs easier than Mech.

[nchunterkw]

You will get the best penetration from a very stiff arrow with lots of FOC. Your factory quills are not super stiff and with an Aluminum insert do not have "high FOC". Duplicate your 380 arrow setup (cut down to 16" for your Micro) and see if your penetration is not WAY better. You should see big improvements from using a Zombie Slayer and having much higher FOC. I had a pass through using a similar setup on the 2 1/2 yr old cow bison in my avatar. 500gr GT Nitro Pro with a Ramcat, from my Micro 335.

"In theory" you lose 1 fps for about every 3gr of extra weight with Micro or Matrix limbs
So your MAG 340 should shoot a 350 gr arrow 340fps. Therefore, 410gr-350gr = 60gr/3 = 20fps. 340-20 = 320fps. This should be close and Bxbow's data above verifies it.
So your Matrix 380 should shoot a 350 gr arrow 380fps. Therefore, 475gr-350gr = 125gr/3 = 42fps. 380-42 = 338fps.

If you really see 70fps difference, something is WAAAY out of whack

[Boo]

I have a feeling that XB is using his "speed ring" as an speed indicator.

[gerald strine]

On the 340 ditch the dull mechanicals and shoot these 150 gr Slick tricks Xbow tricks.
They come sharp and have replaceable blades after a harvest, I have gotten nothing but pass throughs and dozens of dead critters out of my 350 and 340 FPS rated bows on aluminum shafts.
I do not worry what the speed is as long as the bow is shooting good.

https://ads.midwayusa.com/product/2847295574?pid=295574&utm_medium=shopping&utm_source=bing&utm_campaign=Archery+-+Broadheads+and+Points&utm_content=295574&cm_mmc=pf_ci_bing-_-Archery+-+Broadheads+and+Points-_-Slick+Trick+Broadheads-_-295574&msclkid=156c6396534515ab92fb022aa34c2c94&utm_term=4584688612696543

[nchunterkw]

I have a feeling that XB is using his "speed ring" as an speed indicator.

Good point.

My speed rings are WAAAAY off as I shoot heavy arrows with lots of FOC so to get the reticles lined up my speed ring shows that my speed is low

[wheelsquad]

I have a feeling that XB is using his "speed ring" as an speed indicator.

Good point.

My speed rings are WAAAAY off as I shoot heavy arrows with lots of FOC so to get the reticles lined up my speed ring shows that my speed is low

That was my guess too, using speed ring as the basis for being 70 fps different, but hoping he can say for sure or not.

[XB I GO]

I set up my chronograph and put the Vs around 10 feet away. The Matrix 380 is 359 FPS and the Mag 340 is 315 FPS with my set-up. So 44 FPS difference. Not as much as I thought, but I still see a lot more penetration from the M380. I am going to try the BEZS with 110 grain insert at 16" in the Mag 340 and see if that makes a difference. The Matrix 380 (which is actually my brothers) has a stellar reputation in our family. The Mag 340 has seen less action, but seems far inferior ballistic wise at this point. I have to figure out what the right formula is to improve the penetration.

[wheelsquad]

44 fps difference makes a lot more sense.

Are you actually having penetration "issues" with the mag 340? As in you've hit deer in the rib cage and didn't get pass throughs? It is never going to hit as hard as the Matrix 380, just stores a lot less energy.

[Boo]

Your 380 has more speed and more arrow weight on its side to aid in penetration.

[XB I GO]

We've had almost 100% pass throughs with the Matrix 380 and that 475 grain bolt set-up. 4 failure to pass through in a row with the Micro 340 and the 410 grain Quill set-up. Same BH's. I'm going to try the Quills with 110 grain insert and also I have a few BEZS that are 16 inch that need vanes and inserts, so I will set them up and try them too. I just mentioned this at the archery shop and those dummies told me the BH was too heavy and go down to 100 grain. I was taught that the opposite is true. If there was one, I'd try a 175 grain BH, but since there isn't one easy to get I will increase the insert weight to 110 grain. If I was satisfied with the Mag 340 I would have got a Twin Strike, but I'm afraid it will be the same.

[wheelsquad]

If the 150gr on Quills were the dull Trailblazers you had the other thread on, that is your problem. 150gr sharp head that isn't so huge, on a factory Quill, 400gr total, will pass through no problem.

One thing at a time when trying to solve these things. Keith's advice above will help get even more penetration, but it's not a bow energy or arrow weight issue you're having.

I had a complete pass through nearly stem-to-stem with my micro 327 this year shooting 410gr total with sevr 1.5 heads.

And when it was a 308 Short, complete broadside pass throughs as well.


But those trailblazers are too big and apparently not sharp. Bad combo.