My new .30 Impact M3 came with a single transfer port?

[TDK]

Finally received my .30 Impact M3. Upon inspection, it only has a single round transfer port, not the dual transfer ports that are 180 deg apart. Upon re-reading some of the M3 launch literature, specifics on the dual transfer port are vague. It says "some barrels" or "most calibers" come with the dual transfer port.

Does anyone know more? I'm starting with pellets, but do plan to give slugs a try soon. Would be nice to know if this setup is capable of slinging slugs at 950+ fps.

 

[M0ist0ne]

.30 was single. Imagine later batches will get the dual. 

 

[ChRiSiS]

Finally received my .30 Impact M3. Upon inspection, it only has a single round transfer port, not the dual transfer ports that are 180 deg apart. Upon re-reading some of the M3 launch literature, specifics on the dual transfer port are vague. It says "some barrels" or "most calibers" come with the dual transfer port.

Does anyone know more? I'm starting with pellets, but do plan to give slugs a try soon. Would be nice to know if this setup is capable of slinging slugs at 950+ fps.

Just so you know, on my Crown MK2, the .30 cal single transfer port gives higher velocities than the dual port barrel (I have both) at any given reg pressure up to 150 Bar. This is the case with pellets anyway.

Chris

 

[smokeOnBro55]

My Maverick 30 cal came with a single hole port. I purchased a dual port and lost 40 fps.

Put the single back on it went back to the original higher velocity

 

[heavy-impact]

Finally received my .30 Impact M3. Upon inspection, it only has a single round transfer port, not the dual transfer ports that are 180 deg apart. Upon re-reading some of the M3 launch literature, specifics on the dual transfer port are vague. It says "some barrels" or "most calibers" come with the dual transfer port.

Does anyone know more? I'm starting with pellets, but do plan to give slugs a try soon. Would be nice to know if this setup is capable of slinging slugs at 950+ fps.

I'm sure it can push standard weight slugs to 950 but you'll need to flare and elongate the single port (which I prefer) to get heavy slugs up to that speed. I have a modified gen2 shooting 66gn slugs at 948 on 150 bar from a 700mm barrel. 132 ft/lbs

Always keep the transfer port narrower than the bore diameter to keep projectiles from tipping into the port while being chambered. Flare the entrance to a little over 7mm to be sure it covers the entire port that feeds it and elongate the port slightly towards the chamber. Some people use the pin style probe and like it but I prefer to modify the original tube style probe for better flow and feeding. Here's a pic of my port and probe. My valve is also modified a little.

 

[jerrymail]

My M3 Compact .25 came with both of the dual transfer port and low power single one. But the dual TP is similar to huma's earlier version. I switch it with Ernest dual TP.

 

[TDK]

Thanks for the feedback everyone. I'm only planning on slugs up to around 50gr, so it sounds like the standard single round port should handle that. Which makes me think FX might only plan to use the single port on the .30. Maybe the .22 and .25 benefit the most from a bigger 'slug port' due to the smaller projectile diameter and range of slug weights people commonly shoot in them?

 

[TMH]

Just as one more data point: .30 cal M3 Compact received last week from Baker - Single round transfer port.

 

[FX-USA]

.30 Cal barrels are just one large transfer hole for both pellets and slugs. Only the lower calibers of .22 & .25 need varying ports for slugs and pellets as the large port in the .30 Cal handles both equally without the need for a dual port.