Speed of the MM VFT and Patriot???
02-16-2004, 10:09 PM
#1
Thread Starter
Join Date: Sep 2003
Location:
Posts: 112
Speed of the MM VFT and Patriot???
I was just wondering of PABowhntr had a chance to check the MM yet. Last I heard you were waiting for the chronograph to come in. Any luck yet? While were on the subject how bout the Patriot single cam? I was all set on the MM till I went and shot the Patriot. I will be shooting 70#, 28" draw and 375 to 400 grain with the usual stuff on the string. Thanks again. Sorry for all the questions I just trust your opinions on this board when it comes to these things.
Greg.
Greg.
02-17-2004, 04:58 AM
#3
Boone & Crockett
Join Date: Feb 2003
Location: Lehigh County PA USA
Posts: 12,157
RE: Speed of the MM VFT and Patriot???
Just to follow Fritz's format....
MM VFT 71# 30" D/L - (birth cert said 315 fps 350 grain arrow at 71 # and a 30" D/L)
360 grain arrow = 308-309 fps
418 grain arrow = 286-287 fps
That was with nothing on the string but the hush kit and a tied-in nockset.
MM VFT 71# 30" D/L - (birth cert said 315 fps 350 grain arrow at 71 # and a 30" D/L)
360 grain arrow = 308-309 fps
418 grain arrow = 286-287 fps
That was with nothing on the string but the hush kit and a tied-in nockset.
02-17-2004, 08:30 AM
#6
Fork Horn
Join Date: Feb 2003
Location: Holland
Posts: 182
RE: Speed of the MM VFT and Patriot???
Double Creek,
Everything you tie in your string has to be brought in motion when you release.
So the more weight, the more loss.
However, you still need something in your string to get a arrow to the target.
Start with strands itself, to serving, to nockingpoints and peep.
So, just keep it simple as possible and let it be.
If you really need to know exact, use the same calculation as you use on the arrow.
Just add the weight to the arrow in your setup and you have the answer.
Everything you tie in your string has to be brought in motion when you release.
So the more weight, the more loss.
However, you still need something in your string to get a arrow to the target.
Start with strands itself, to serving, to nockingpoints and peep.
So, just keep it simple as possible and let it be.
If you really need to know exact, use the same calculation as you use on the arrow.
Just add the weight to the arrow in your setup and you have the answer.
02-17-2004, 09:04 AM
#7
Boone & Crockett
Join Date: Feb 2003
Location: Lehigh County PA USA
Posts: 12,157
RE: Speed of the MM VFT and Patriot???
If you really need to know exact, use the same calculation as you use on the arrow.
Just add the weight to the arrow in your setup and you have the answer.
Just add the weight to the arrow in your setup and you have the answer.
I noticed an 8-9 fps increase in speed when I removed the loop, extra tied-in nockset and peep sight....I am using a Shurz A Peep...medium size.
02-17-2004, 09:52 PM
#8
Fork Horn
Join Date: Feb 2003
Location: Vernon Hills IL USA
Posts: 382
RE: Speed of the MM VFT and Patriot???
Frank,
Have you played around at all with different spines and arrow weights to see what the MM likes. For instance on my FX when I went to the 7595, from the 5575's I only lost 1ft/sec for every 7.5 grains unless I went to a 125 grain head but even there it was only 1ft/sec for every 5.5. That bow seemed to like a little more arrow weight and a heavier spine.
Have you played around at all with different spines and arrow weights to see what the MM likes. For instance on my FX when I went to the 7595, from the 5575's I only lost 1ft/sec for every 7.5 grains unless I went to a 125 grain head but even there it was only 1ft/sec for every 5.5. That bow seemed to like a little more arrow weight and a heavier spine.
02-18-2004, 04:52 AM
#9
Boone & Crockett
Join Date: Feb 2003
Location: Lehigh County PA USA
Posts: 12,157
RE: Speed of the MM VFT and Patriot???
Buckfevr,
Actually, yes I have to some extent. However, my grain scale is on the fritz (no offense Fred) and I don't want to report inaccurate numbers. I could use Bow Jackson's website but then those arrow weights would be estimates and not actual. Spine, in and of itself, has not been something I have tested for specifically however it does relate somewhat in that the different arrows I am using for the different test weights are of different spines.
But, I can summarize to some extent in regard to arrow weight. The MM is somewhat typical in the sense that it will shoot mid to heavy weight arrows (Over 6.5 grains per pound of draw weight) at roughly 1 fps for every 5 grains. However, once you drop below 6.5 grains per pound of draw weight then the speed increases to around 1 fps for every 3 grains. That is with a 70 lb peak draw weight model....30 inch draw.
Actually, yes I have to some extent. However, my grain scale is on the fritz (no offense Fred) and I don't want to report inaccurate numbers. I could use Bow Jackson's website but then those arrow weights would be estimates and not actual. Spine, in and of itself, has not been something I have tested for specifically however it does relate somewhat in that the different arrows I am using for the different test weights are of different spines.
But, I can summarize to some extent in regard to arrow weight. The MM is somewhat typical in the sense that it will shoot mid to heavy weight arrows (Over 6.5 grains per pound of draw weight) at roughly 1 fps for every 5 grains. However, once you drop below 6.5 grains per pound of draw weight then the speed increases to around 1 fps for every 3 grains. That is with a 70 lb peak draw weight model....30 inch draw.
