Bulldog 400 owners - what broadhead are you shooting?

[Clover13]

Just looking to get an idea of what bolt/bh combos the members here have.

I'm shooting 18" spine indexed Zombies from SSA with 110 grain brass inserts and noticing I get about 1-1.5" low at 60 yards compared to FPs when shooting 100 grain Slick Trick 1" Standards. Pretty consistent to reproduce it. I realize 1-1.5" isn't a hunting concern, but would like to figure out the "why".

I weighed both the a FP combo bolt and a BH combo bolt and they were literally matched to 0.1 of a grain. BH spins clean, have tried it on different arrows and same result.

Also tried a 100 grain Ramcat and seeing the same issue, about 1" low at 60 yards.

I plan on trying to rotate the arrows to change the spine index position to see if it influences anything tomorrow. Will also try a the Rage practice head I have to see if that flies with the FP.

Figured I'd see what you guys thought!

[mchurch]

I also shoot a bulldog 400. I am shooting ssas 18 inch zombie slayers with 110 brass inserts, blazers vanes right helical, aluminum flat back insert. Mechanical broadheads I shoot g5 havoc crossbow, innerloc exp, grim reaper carni four. For fixed I shoot qad exodus crossbow swept, and magnus black hornet serazor

[mchurch]

How long are your 2

[mchurch]

How long are your arrows

[Clover13]

They are 18", updated main post too!
Are all of your BHs same POI as your FPs? Out to what distances have you tested?

[mchurch]

No not the same impact point as field points. I have tested out to 60 yards

[Clover13]

So that's the question...why don't they?
Planing going on that influences it?
What kind of POI changes are you seeing? Anything consistent?

[Clover13]

FWIW, might be a bolt issue.
Starting going through the process of elimination.

Weighed 2 different arrows, both within 0.2 grains. One was an existing one I was practicing with, another was a brand new one. Note they are from the same order/batch of arrows.

Tried the same FP on both arrows with the spine index mark at 12 o'clock and they were within 0.5-1" of each other at center x at 60 yards.

Tried the same BH on both arrows with the spine index mark at 12 o'clock and the new one was center X, the other was 1.5-2" low. Shot again, same result.

Then I rotated the "flier" out of the spine indexed mark 120 degrees and bam center X on two consecutive shots, so both the new and used arrow shot the same.

Ran out of time, need to test some more, but it might be a problem with that arrow's spine index and coincidentally with another one I was using in my test batch that was also flying low.

Spoke with Jerry at SSA and he's in the loop, more to come as I get more test time with it. But at least I have some positive results in terms of POI between FP and BH.

[Hunt it]

Same point of impact between broadheads and identical weight field points is not a given. Examples, my son and I both use 100grn G5 Strikers out of our 380's - same weight arrows -( his Exicutioners and mine zombies) his shoots same POI for both field points and broadheads mine needs some adjustment when I switch over to broadheads. In my 400BD I use 20" Zombies with 110 grn inserts and same 100grn broadheads listed above. My POI is different between field points and broadheads by several inches. That being said, the broadheads group 3" at 90 yards no problem and tighter at closer ranges. I use field points all practice season and make adjustments each fall. I'd much rather do this than sacrifice quality in my broadheads just to achieve same POI.

[Clover13]

Thanks for the feedback. Yeah just trying to get a general idea of what others are experiencing. Just seems strange the same BH on the same make/model/weight/size bolt (but different bolts) has differing POIs. I didn't think the spine indexing would be that significant, but maybe it is. The only problem is, I have variations and am trying to figure out why....it's possible my spine index marks are off

[Hunt it]

Keep in mind that there will always be one or two out of a dozen that don't fly like others no matter what you do. To cull the bad if any, here is what I do: I number every shaft and each vane gets marked A,B & C. Then I shoot each one at 20 yards with field points using the cock vane C first. I note each one as good or not, once I've shot the dozen I then go to any Not's and shoot them using A and B vanes as cock vane and make notes. If A or B does not produce accuracy I cull the shaft for now and move on. Once this is done, I repeat process with all good shafts at 30, then 40. Once all that done I start the process over but with broadheads this time. Normally by time done there is one or two shafts out of a dozen that just don't cut it.
The rejects get used for experimenting, I've found that if you put a lot of weight up front most will behave and be good 20-30 yard arrows at best. If I double up the shaft - insert smaller carbon shaft and pump weight up to 700grn they fly well ( these are the rejects I'm talking about here).